OSA Browser

Glossary of OSA attributes

This Glossary alphabetically lists all attributes used in the OSAv20230621 database(s) held in the OSA. If you would like to have more information about the schema tables please use the OSAv20230621 Schema Browser (other Browser versions).

A B C D E F G H I J K L M
N O P Q R S T U V W X Y Z

G

Name Schema Table Database Description Type Length Unit Default Value Unified Content Descriptor

g_flux phot_variable_time_series_g_fov GAIADR1 G-band flux for each FoV observation float 8 electrons/second phot.flux;em.opt

g_flux_error phot_variable_time_series_g_fov GAIADR1 Estimated uncertainty on G-band flux for each FoV observation float 8 electrons/second stat.error;phot.flux;em.opt

g_mag_zero_oint_error ext_phot_zero_point GAIADR1 Uncertainty on G magnitude zero point float 8 mag stat.error;phot.mag;arith.zp;em.opt

g_mag_zero_point ext_phot_zero_point GAIADR1 G magnitude zero point float 8 mag phot.mag;arith.zp;em.opt

g_magnitude phot_variable_time_series_g_fov GAIADR1 G-band magnitude for each FoV observation float 8 mag phot.mag;em.opt

g_rp gaia_source GAIADR2 G-RP colour real 4 mag phot.colour

g_score twomass_xsc TWOMASS galaxy score: 1(extended) < g_score < 2(point-like). real 4 meta.code

gainCor MultiframeDetector ATLASDR1 Gain correction factor {image extension keyword: GAINCOR} real 4 -9.999995e+08

gainCor MultiframeDetector ATLASDR2 Gain correction factor {image extension keyword: GAINCOR} real 4 -9.999995e+08

gainCor MultiframeDetector ATLASDR3 Gain correction factor {image extension keyword: GAINCOR} real 4 -9.999995e+08

gainCor MultiframeDetector ATLASDR4 Gain correction factor {image extension keyword: GAINCOR} real 4 -9.999995e+08

gainCor MultiframeDetector ATLASDR5 Gain correction factor {image extension keyword: GAINCOR} real 4 -9.999995e+08

gainCor MultiframeDetector ATLASv20131127 Gain correction factor {image extension keyword: GAINCOR} real 4 -9.999995e+08

gainCor MultiframeDetector ATLASv20160425 Gain correction factor {image extension keyword: GAINCOR} real 4 -9.999995e+08

gainCor MultiframeDetector ATLASv20180209 Gain correction factor {image extension keyword: GAINCOR} real 4 -9.999995e+08

gainCor MultiframeDetector VPHASDR3 Gain correction factor {image extension keyword: GAINCOR} real 4 -9.999995e+08

gainCor MultiframeDetector VPHASv20160112 Gain correction factor {image extension keyword: GAINCOR} real 4 -9.999995e+08

gainCor MultiframeDetector VPHASv20170222 Gain correction factor {image extension keyword: GAINCOR} real 4 -9.999995e+08

gal_contam twomass_psc TWOMASS Extended source "contamination" flag. smallint 2 meta.code

gal_contam twomass_sixx2_psc TWOMASS src contaminated by galaxy (check blanked/subtracted tbl) smallint 2

galactic_lat igsl_source GAIADR1 Galactic latitude real 4 degrees pos.galatic.lat

galactic_lon igsl_source GAIADR1 Galactic longitude real 4 degrees pos.galatic.lon

gAperMag3 atlasSource ATLASDR1 Default point source G aperture corrected mag (2.0 arcsec aperture diameter)
If in doubt use this flux estimator real 4 mag -0.9999995e9 phot.mag

gAperMag3 atlasSource ATLASDR2 Default point source G aperture corrected mag (2.0 arcsec aperture diameter)
If in doubt use this flux estimator real 4 mag -0.9999995e9 phot.mag

gAperMag3 atlasSource ATLASDR3 Default point source G aperture corrected mag (2.0 arcsec aperture diameter)
If in doubt use this flux estimator real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMag3 atlasSource ATLASDR4 Default point source G aperture corrected mag (2.0 arcsec aperture diameter)
If in doubt use this flux estimator real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMag3 atlasSource ATLASDR5 Default point source G aperture corrected mag (2.0 arcsec aperture diameter)
If in doubt use this flux estimator real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMag3 atlasSource ATLASv20131127 Default point source G aperture corrected mag (2.0 arcsec aperture diameter)
If in doubt use this flux estimator real 4 mag -0.9999995e9 phot.mag

gAperMag3 atlasSource ATLASv20160425 Default point source G aperture corrected mag (2.0 arcsec aperture diameter)
If in doubt use this flux estimator real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMag3 atlasSource ATLASv20180209 Default point source G aperture corrected mag (2.0 arcsec aperture diameter)
If in doubt use this flux estimator real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMag3 vphasSource VPHASDR3 Default point source G aperture corrected mag (2.0 arcsec aperture diameter)
If in doubt use this flux estimator real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMag3 vphasSource VPHASv20160112 Default point source G aperture corrected mag (2.0 arcsec aperture diameter)
If in doubt use this flux estimator real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMag3 vphasSource VPHASv20170222 Default point source G aperture corrected mag (2.0 arcsec aperture diameter)
If in doubt use this flux estimator real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMag3Err atlasSource ATLASDR1 Error in default point/extended source G mag (2.0 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error

gAperMag3Err atlasSource ATLASDR2 Error in default point/extended source G mag (2.0 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error

gAperMag3Err atlasSource ATLASDR3 Error in default point/extended source G mag (2.0 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gAperMag3Err atlasSource ATLASDR4 Error in default point/extended source G mag (2.0 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gAperMag3Err atlasSource ATLASDR5 Error in default point/extended source G mag (2.0 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gAperMag3Err atlasSource ATLASv20131127 Error in default point/extended source G mag (2.0 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error

gAperMag3Err atlasSource ATLASv20160425 Error in default point/extended source G mag (2.0 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gAperMag3Err atlasSource ATLASv20180209 Error in default point/extended source G mag (2.0 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gAperMag3Err vphasSource VPHASDR3 Error in default point/extended source G mag (2.0 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gAperMag3Err vphasSource VPHASv20160112 Error in default point/extended source G mag (2.0 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gAperMag3Err vphasSource VPHASv20170222 Error in default point/extended source G mag (2.0 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gAperMag4 atlasSource ATLASDR1 Point source G aperture corrected mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag

gAperMag4 atlasSource ATLASDR2 Point source G aperture corrected mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag

gAperMag4 atlasSource ATLASDR3 Point source G aperture corrected mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMag4 atlasSource ATLASDR4 Point source G aperture corrected mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMag4 atlasSource ATLASDR5 Point source G aperture corrected mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMag4 atlasSource ATLASv20131127 Point source G aperture corrected mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag

gAperMag4 atlasSource ATLASv20160425 Point source G aperture corrected mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMag4 atlasSource ATLASv20180209 Point source G aperture corrected mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMag4 vphasSource VPHASDR3 Point source G aperture corrected mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMag4 vphasSource VPHASv20160112 Point source G aperture corrected mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMag4 vphasSource VPHASv20170222 Point source G aperture corrected mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMag4Err atlasSource ATLASDR1 Error in point/extended source G mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error

gAperMag4Err atlasSource ATLASDR2 Error in point/extended source G mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error

gAperMag4Err atlasSource ATLASDR3 Error in point/extended source G mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gAperMag4Err atlasSource ATLASDR4 Error in point/extended source G mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gAperMag4Err atlasSource ATLASDR5 Error in point/extended source G mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gAperMag4Err atlasSource ATLASv20131127 Error in point/extended source G mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error

gAperMag4Err atlasSource ATLASv20160425 Error in point/extended source G mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gAperMag4Err atlasSource ATLASv20180209 Error in point/extended source G mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gAperMag4Err vphasSource VPHASDR3 Error in point/extended source G mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gAperMag4Err vphasSource VPHASv20160112 Error in point/extended source G mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gAperMag4Err vphasSource VPHASv20170222 Error in point/extended source G mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gAperMag6 atlasSource ATLASDR1 Point source G aperture corrected mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag

gAperMag6 atlasSource ATLASDR2 Point source G aperture corrected mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag

gAperMag6 atlasSource ATLASDR3 Point source G aperture corrected mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMag6 atlasSource ATLASDR4 Point source G aperture corrected mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMag6 atlasSource ATLASDR5 Point source G aperture corrected mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMag6 atlasSource ATLASv20131127 Point source G aperture corrected mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag

gAperMag6 atlasSource ATLASv20160425 Point source G aperture corrected mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMag6 atlasSource ATLASv20180209 Point source G aperture corrected mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMag6 vphasSource VPHASDR3 Point source G aperture corrected mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMag6 vphasSource VPHASv20160112 Point source G aperture corrected mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMag6 vphasSource VPHASv20170222 Point source G aperture corrected mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMag6Err atlasSource ATLASDR1 Error in point/extended source G mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error

gAperMag6Err atlasSource ATLASDR2 Error in point/extended source G mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error

gAperMag6Err atlasSource ATLASDR3 Error in point/extended source G mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gAperMag6Err atlasSource ATLASDR4 Error in point/extended source G mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gAperMag6Err atlasSource ATLASDR5 Error in point/extended source G mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gAperMag6Err atlasSource ATLASv20131127 Error in point/extended source G mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error

gAperMag6Err atlasSource ATLASv20160425 Error in point/extended source G mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gAperMag6Err atlasSource ATLASv20180209 Error in point/extended source G mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gAperMag6Err vphasSource VPHASDR3 Error in point/extended source G mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gAperMag6Err vphasSource VPHASv20160112 Error in point/extended source G mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gAperMag6Err vphasSource VPHASv20170222 Error in point/extended source G mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gAperMagNoAperCorr3 atlasSource ATLASDR1 Default extended source G aperture mag (2.0 arcsec aperture diameter)
If in doubt use this flux estimator real 4 mag -0.9999995e9 phot.mag

gAperMagNoAperCorr3 atlasSource ATLASDR2 Default extended source G aperture mag (2.0 arcsec aperture diameter)
If in doubt use this flux estimator real 4 mag -0.9999995e9 phot.mag

gAperMagNoAperCorr3 atlasSource ATLASDR3 Default extended source G aperture mag (2.0 arcsec aperture diameter)
If in doubt use this flux estimator real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMagNoAperCorr3 atlasSource ATLASDR4 Default extended source G aperture mag (2.0 arcsec aperture diameter)
If in doubt use this flux estimator real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMagNoAperCorr3 atlasSource ATLASDR5 Default extended source G aperture mag (2.0 arcsec aperture diameter)
If in doubt use this flux estimator real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMagNoAperCorr3 atlasSource ATLASv20131127 Default extended source G aperture mag (2.0 arcsec aperture diameter)
If in doubt use this flux estimator real 4 mag -0.9999995e9 phot.mag

gAperMagNoAperCorr3 atlasSource ATLASv20160425 Default extended source G aperture mag (2.0 arcsec aperture diameter)
If in doubt use this flux estimator real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMagNoAperCorr3 atlasSource ATLASv20180209 Default extended source G aperture mag (2.0 arcsec aperture diameter)
If in doubt use this flux estimator real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMagNoAperCorr3 vphasSource VPHASDR3 Default extended source G aperture mag (2.0 arcsec aperture diameter)
If in doubt use this flux estimator real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMagNoAperCorr3 vphasSource VPHASv20160112 Default extended source G aperture mag (2.0 arcsec aperture diameter)
If in doubt use this flux estimator real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMagNoAperCorr3 vphasSource VPHASv20170222 Default extended source G aperture mag (2.0 arcsec aperture diameter)
If in doubt use this flux estimator real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMagNoAperCorr4 atlasSource ATLASDR1 Extended source G aperture mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag

gAperMagNoAperCorr4 atlasSource ATLASDR2 Extended source G aperture mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag

gAperMagNoAperCorr4 atlasSource ATLASDR3 Extended source G aperture mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMagNoAperCorr4 atlasSource ATLASDR4 Extended source G aperture mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMagNoAperCorr4 atlasSource ATLASDR5 Extended source G aperture mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMagNoAperCorr4 atlasSource ATLASv20131127 Extended source G aperture mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag

gAperMagNoAperCorr4 atlasSource ATLASv20160425 Extended source G aperture mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMagNoAperCorr4 atlasSource ATLASv20180209 Extended source G aperture mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMagNoAperCorr4 vphasSource VPHASDR3 Extended source G aperture mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMagNoAperCorr4 vphasSource VPHASv20160112 Extended source G aperture mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMagNoAperCorr4 vphasSource VPHASv20170222 Extended source G aperture mag (2.8 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMagNoAperCorr6 atlasSource ATLASDR1 Extended source G aperture mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag

gAperMagNoAperCorr6 atlasSource ATLASDR2 Extended source G aperture mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag

gAperMagNoAperCorr6 atlasSource ATLASDR3 Extended source G aperture mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMagNoAperCorr6 atlasSource ATLASDR4 Extended source G aperture mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMagNoAperCorr6 atlasSource ATLASDR5 Extended source G aperture mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMagNoAperCorr6 atlasSource ATLASv20131127 Extended source G aperture mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag

gAperMagNoAperCorr6 atlasSource ATLASv20160425 Extended source G aperture mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMagNoAperCorr6 atlasSource ATLASv20180209 Extended source G aperture mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMagNoAperCorr6 vphasSource VPHASDR3 Extended source G aperture mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMagNoAperCorr6 vphasSource VPHASv20160112 Extended source G aperture mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gAperMagNoAperCorr6 vphasSource VPHASv20170222 Extended source G aperture mag (5.7 arcsec aperture diameter) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gauSig atlasDetection ATLASDR1 RMS of axes of ellipse fit {catalogue TType keyword: Gaussian_sigma} real 4 pixels src.morph.param

These are derived from the three general intensity-weighted second moments. The equivalence between them and a generalised elliptical Gaussian Distribution is used to derive Gaussian sigma = (σ_a²+σ_b²)^½

gauSig atlasDetection ATLASDR3 RMS of axes of ellipse fit {catalogue TType keyword: Gaussian_sigma} real 4 pixels src.morph.param

These are derived from the three general intensity-weighted second moments. The equivalence between them and a generalised elliptical Gaussian Distribution is used to derive Gaussian sigma = (σ_a²+σ_b²)^½

gauSig atlasDetection ATLASDR4 RMS of axes of ellipse fit {catalogue TType keyword: Gaussian_sigma} real 4 pixels src.morph.param

These are derived from the three general intensity-weighted second moments. The equivalence between them and a generalised elliptical Gaussian Distribution is used to derive Gaussian sigma = (σ_a²+σ_b²)^½

gauSig atlasDetection ATLASDR5 RMS of axes of ellipse fit {catalogue TType keyword: Gaussian_sigma} real 4 pixels src.morph.param

These are derived from the three general intensity-weighted second moments. The equivalence between them and a generalised elliptical Gaussian Distribution is used to derive Gaussian sigma = (σ_a²+σ_b²)^½

gauSig atlasDetection ATLASv20131127 RMS of axes of ellipse fit {catalogue TType keyword: Gaussian_sigma} real 4 pixels src.morph.param

These are derived from the three general intensity-weighted second moments. The equivalence between them and a generalised elliptical Gaussian Distribution is used to derive Gaussian sigma = (σ_a²+σ_b²)^½

gauSig atlasDetection ATLASv20160425 RMS of axes of ellipse fit {catalogue TType keyword: Gaussian_sigma} real 4 pixels src.morph.param

These are derived from the three general intensity-weighted second moments. The equivalence between them and a generalised elliptical Gaussian Distribution is used to derive Gaussian sigma = (σ_a²+σ_b²)^½

gauSig atlasDetection ATLASv20180209 RMS of axes of ellipse fit {catalogue TType keyword: Gaussian_sigma} real 4 pixels src.morph.param

These are derived from the three general intensity-weighted second moments. The equivalence between them and a generalised elliptical Gaussian Distribution is used to derive Gaussian sigma = (σ_a²+σ_b²)^½

gauSig atlasDetection, atlasDetectionUncorr ATLASDR2 RMS of axes of ellipse fit {catalogue TType keyword: Gaussian_sigma} real 4 pixels src.morph.param

These are derived from the three general intensity-weighted second moments. The equivalence between them and a generalised elliptical Gaussian Distribution is used to derive Gaussian sigma = (σ_a²+σ_b²)^½

gauSig vphasDetection VPHASv20160112 RMS of axes of ellipse fit {catalogue TType keyword: Gaussian_sigma} real 4 pixels src.morph.param

These are derived from the three general intensity-weighted second moments. The equivalence between them and a generalised elliptical Gaussian Distribution is used to derive Gaussian sigma = (σ_a²+σ_b²)^½

gauSig vphasDetection VPHASv20170222 RMS of axes of ellipse fit {catalogue TType keyword: Gaussian_sigma} real 4 pixels src.morph.param

These are derived from the three general intensity-weighted second moments. The equivalence between them and a generalised elliptical Gaussian Distribution is used to derive Gaussian sigma = (σ_a²+σ_b²)^½

gauSig vphasDetection, vphasDetectionUncorr VPHASDR3 RMS of axes of ellipse fit {catalogue TType keyword: Gaussian_sigma} real 4 pixels src.morph.param

These are derived from the three general intensity-weighted second moments. The equivalence between them and a generalised elliptical Gaussian Distribution is used to derive Gaussian sigma = (σ_a²+σ_b²)^½

Gauss_frac_1 ravedr5Source RAVE Property of multi-Gaussian distance modulus fit, see Section 9, eq. 5 real 4 stat.fit.param

Gauss_frac_2 ravedr5Source RAVE Property of multi-Gaussian distance modulus fit, see Section 9, eq. 5 real 4 stat.fit.param

Gauss_frac_3 ravedr5Source RAVE Property of multi-Gaussian distance modulus fit, see Section 9, eq. 5 real 4 stat.fit.param

Gauss_mean_1 ravedr5Source RAVE Property of multi-Gaussian distance modulus fit, see Section 9, eq. 5 real 4 stat.fit.param

Gauss_mean_2 ravedr5Source RAVE Property of multi-Gaussian distance modulus fit, see Section 9, eq. 5 real 4 stat.fit.param

Gauss_mean_3 ravedr5Source RAVE Property of multi-Gaussian distance modulus fit, see Section 9, eq. 5 real 4 stat.fit.param

Gauss_sigma_1 ravedr5Source RAVE Property of multi-Gaussian distance modulus fit, see Section 9, eq. 5 real 4 stat.fit.param

Gauss_sigma_2 ravedr5Source RAVE Property of multi-Gaussian distance modulus fit, see Section 9, eq. 5 real 4 stat.fit.param

Gauss_sigma_3 ravedr5Source RAVE Property of multi-Gaussian distance modulus fit, see Section 9, eq. 5 real 4 stat.fit.param

gAverageConf atlasSource ATLASDR1 average confidence in 2 arcsec diameter default aperture (aper3) G real 4 -99999999 meta.code

gAverageConf atlasSource ATLASDR2 average confidence in 2 arcsec diameter default aperture (aper3) G real 4 -99999999 meta.code

gAverageConf atlasSource ATLASDR3 average confidence in 2 arcsec diameter default aperture (aper3) G real 4 -99999999 stat.likelihood;em.opt.B

gAverageConf atlasSource ATLASDR4 average confidence in 2 arcsec diameter default aperture (aper3) G real 4 -99999999 stat.likelihood;em.opt.B

gAverageConf atlasSource ATLASDR5 average confidence in 2 arcsec diameter default aperture (aper3) G real 4 -99999999 stat.likelihood;em.opt.B

gAverageConf atlasSource ATLASv20131127 average confidence in 2 arcsec diameter default aperture (aper3) G real 4 -99999999 meta.code

gAverageConf atlasSource ATLASv20160425 average confidence in 2 arcsec diameter default aperture (aper3) G real 4 -99999999 stat.likelihood;em.opt.B

gAverageConf atlasSource ATLASv20180209 average confidence in 2 arcsec diameter default aperture (aper3) G real 4 -99999999 stat.likelihood;em.opt.B

gAverageConf vphasSource VPHASDR3 average confidence in 2 arcsec diameter default aperture (aper3) G real 4 -99999999 stat.likelihood;em.opt.B

gAverageConf vphasSource VPHASv20160112 average confidence in 2 arcsec diameter default aperture (aper3) G real 4 -99999999 stat.likelihood;em.opt.B

gAverageConf vphasSource VPHASv20170222 average confidence in 2 arcsec diameter default aperture (aper3) G real 4 -99999999 stat.likelihood;em.opt.B

gClass atlasSource ATLASDR1 discrete image classification flag in G smallint 2 -9999 src.class

gClass atlasSource ATLASDR2 discrete image classification flag in G smallint 2 -9999 src.class

gClass atlasSource ATLASDR3 discrete image classification flag in G smallint 2 -9999 src.class;em.opt.B

gClass atlasSource ATLASDR4 discrete image classification flag in G smallint 2 -9999 src.class;em.opt.B

gClass atlasSource ATLASDR5 discrete image classification flag in G smallint 2 -9999 src.class;em.opt.B

gClass atlasSource ATLASv20131127 discrete image classification flag in G smallint 2 -9999 src.class

gClass atlasSource ATLASv20160425 discrete image classification flag in G smallint 2 -9999 src.class;em.opt.B

gClass atlasSource ATLASv20180209 discrete image classification flag in G smallint 2 -9999 src.class;em.opt.B

gClass vphasSource VPHASDR3 discrete image classification flag in G smallint 2 -9999 src.class;em.opt.B

gClass vphasSource VPHASv20160112 discrete image classification flag in G smallint 2 -9999 src.class;em.opt.B

gClass vphasSource VPHASv20170222 discrete image classification flag in G smallint 2 -9999 src.class;em.opt.B

gClassStat atlasSource ATLASDR1 N(0,1) stellarness-of-profile statistic in G real 4 -0.9999995e9 stat

gClassStat atlasSource ATLASDR2 N(0,1) stellarness-of-profile statistic in G real 4 -0.9999995e9 stat

gClassStat atlasSource ATLASDR3 N(0,1) stellarness-of-profile statistic in G real 4 -0.9999995e9 stat;em.opt.B

gClassStat atlasSource ATLASDR4 N(0,1) stellarness-of-profile statistic in G real 4 -0.9999995e9 stat;em.opt.B

gClassStat atlasSource ATLASDR5 N(0,1) stellarness-of-profile statistic in G real 4 -0.9999995e9 stat;em.opt.B

gClassStat atlasSource ATLASv20131127 N(0,1) stellarness-of-profile statistic in G real 4 -0.9999995e9 stat

gClassStat atlasSource ATLASv20160425 N(0,1) stellarness-of-profile statistic in G real 4 -0.9999995e9 stat;em.opt.B

gClassStat atlasSource ATLASv20180209 N(0,1) stellarness-of-profile statistic in G real 4 -0.9999995e9 stat;em.opt.B

gClassStat vphasSource VPHASDR3 N(0,1) stellarness-of-profile statistic in G real 4 -0.9999995e9 stat;em.opt.B

gClassStat vphasSource VPHASv20160112 N(0,1) stellarness-of-profile statistic in G real 4 -0.9999995e9 stat;em.opt.B

gClassStat vphasSource VPHASv20170222 N(0,1) stellarness-of-profile statistic in G real 4 -0.9999995e9 stat;em.opt.B

gcnf twomass_sixx2_psc, twomass_sixx2_xsc TWOMASS Group confusion flag 0=not confused or single apparation, 1=confused smallint 2

gcntr twomass_sixx2_psc, twomass_sixx2_xsc TWOMASS A unique identifier for the merged group of apparitions of this source int 4

gEll atlasSource ATLASDR1 1-b/a, where a/b=semi-major/minor axes in G real 4 -0.9999995e9 src.ellipticity

gEll atlasSource ATLASDR2 1-b/a, where a/b=semi-major/minor axes in G real 4 -0.9999995e9 src.ellipticity

gEll atlasSource ATLASDR3 1-b/a, where a/b=semi-major/minor axes in G real 4 -0.9999995e9 src.ellipticity;em.opt.B

gEll atlasSource ATLASDR4 1-b/a, where a/b=semi-major/minor axes in G real 4 -0.9999995e9 src.ellipticity;em.opt.B

gEll atlasSource ATLASDR5 1-b/a, where a/b=semi-major/minor axes in G real 4 -0.9999995e9 src.ellipticity;em.opt.B

gEll atlasSource ATLASv20131127 1-b/a, where a/b=semi-major/minor axes in G real 4 -0.9999995e9 src.ellipticity

gEll atlasSource ATLASv20160425 1-b/a, where a/b=semi-major/minor axes in G real 4 -0.9999995e9 src.ellipticity;em.opt.B

gEll atlasSource ATLASv20180209 1-b/a, where a/b=semi-major/minor axes in G real 4 -0.9999995e9 src.ellipticity;em.opt.B

gEll vphasSource VPHASDR3 1-b/a, where a/b=semi-major/minor axes in G real 4 -0.9999995e9 src.ellipticity;em.opt.B

gEll vphasSource VPHASv20160112 1-b/a, where a/b=semi-major/minor axes in G real 4 -0.9999995e9 src.ellipticity;em.opt.B

gEll vphasSource VPHASv20170222 1-b/a, where a/b=semi-major/minor axes in G real 4 -0.9999995e9 src.ellipticity;em.opt.B

geNum atlasMergeLog ATLASDR1 the extension number of this G frame tinyint 1 meta.number

geNum atlasMergeLog ATLASDR2 the extension number of this G frame tinyint 1 meta.number

geNum atlasMergeLog ATLASDR3 the extension number of this G frame tinyint 1 meta.number;em.opt.B

geNum atlasMergeLog ATLASDR4 the extension number of this G frame tinyint 1 meta.number;em.opt.B

geNum atlasMergeLog ATLASDR5 the extension number of this G frame tinyint 1 meta.id;em.opt.B

geNum atlasMergeLog ATLASv20131127 the extension number of this G frame tinyint 1 meta.number

geNum atlasMergeLog ATLASv20160425 the extension number of this G frame tinyint 1 meta.number;em.opt.B

geNum atlasMergeLog ATLASv20180209 the extension number of this G frame tinyint 1 meta.number;em.opt.B

geNum vphasMergeLog VPHASDR3 the extension number of this G frame tinyint 1 meta.number;em.opt.B

geNum vphasMergeLog VPHASv20160112 the extension number of this G frame tinyint 1 meta.number;em.opt.B

geNum vphasMergeLog VPHASv20170222 the extension number of this G frame tinyint 1 meta.number;em.opt.B

gErrBits atlasSource ATLASDR1 processing warning/error bitwise flags in G int 4 -99999999 meta.code

Apparently not actually an error bit flag, but a count of the number of zero confidence pixels in the default (2 arcsec diameter) aperture.

gErrBits atlasSource ATLASDR2 processing warning/error bitwise flags in G int 4 -99999999 meta.code

Apparently not actually an error bit flag, but a count of the number of zero confidence pixels in the default (2 arcsec diameter) aperture.

gErrBits atlasSource ATLASDR3 processing warning/error bitwise flags in G int 4 -99999999 meta.code;em.opt.B

Apparently not actually an error bit flag, but a count of the number of zero confidence pixels in the default (2 arcsec diameter) aperture.

gErrBits atlasSource ATLASDR4 processing warning/error bitwise flags in G int 4 -99999999 meta.code;em.opt.B

Apparently not actually an error bit flag, but a count of the number of zero confidence pixels in the default (2 arcsec diameter) aperture.

gErrBits atlasSource ATLASDR5 processing warning/error bitwise flags in G int 4 -99999999 meta.code;em.opt.B

Apparently not actually an error bit flag, but a count of the number of zero confidence pixels in the default (2 arcsec diameter) aperture.

gErrBits atlasSource ATLASv20131127 processing warning/error bitwise flags in G int 4 -99999999 meta.code

Apparently not actually an error bit flag, but a count of the number of zero confidence pixels in the default (2 arcsec diameter) aperture.

gErrBits atlasSource ATLASv20160425 processing warning/error bitwise flags in G int 4 -99999999 meta.code;em.opt.B

Apparently not actually an error bit flag, but a count of the number of zero confidence pixels in the default (2 arcsec diameter) aperture.

gErrBits atlasSource ATLASv20180209 processing warning/error bitwise flags in G int 4 -99999999 meta.code;em.opt.B

Apparently not actually an error bit flag, but a count of the number of zero confidence pixels in the default (2 arcsec diameter) aperture.

gErrBits vphasSource VPHASDR3 processing warning/error bitwise flags in G int 4 -99999999 meta.code;em.opt.B

Apparently not actually an error bit flag, but a count of the number of zero confidence pixels in the default (2 arcsec diameter) aperture.

gErrBits vphasSource VPHASv20160112 processing warning/error bitwise flags in G int 4 -99999999 meta.code;em.opt.B

Apparently not actually an error bit flag, but a count of the number of zero confidence pixels in the default (2 arcsec diameter) aperture.

gErrBits vphasSource VPHASv20170222 processing warning/error bitwise flags in G int 4 -99999999 meta.code;em.opt.B

Apparently not actually an error bit flag, but a count of the number of zero confidence pixels in the default (2 arcsec diameter) aperture.

gEta atlasSource ATLASDR1 Offset of G detection from master position (+north/-south) real 4 arcsec -0.9999995e9 pos.eq.dec;arith.diff

When associating individual passband detections into merged sources, a generous (in terms of the positional uncertainties) pairing radius of 1.0 arcseconds is used. Such a large association criterion can of course lead to spurious pairings in the merged sources lists (although note that between passband pairs, handshake pairing is done: both passbands must agree that the candidate pair is their nearest neighbour for the pair to propagate through into the merged source table). In order to help filter spurious pairings out, and assuming that large positional offsets between the different passband detections are not expected (e.g. because of source motion, or larger than usual positional uncertainties) then the attributes Xi and Eta can be used to filter any pairings with suspiciously large offsets in one or more bands. For example, for a clean sample of QSOs from the VHS, you might wish to insist that the offsets in the selected sample are all below 0.5 arcsecond: simply add WHERE clauses into the SQL sample selection script to exclude all Xi and Eta values larger than the threshold you want. NB: the master position is the position of the detection in the shortest passband in the set, rather than the ra/dec of the source as stored in source attributes of the same name. The former is used in the pairing process, while the latter is generally the optimally weighted mean position from an astrometric solution or other combinatorial process of all individual detection positions across the available passbands.

gEta atlasSource ATLASDR2 Offset of G detection from master position (+north/-south) real 4 arcsec -0.9999995e9 pos.eq.dec;arith.diff

When associating individual passband detections into merged sources, a generous (in terms of the positional uncertainties) pairing radius of 1.0 arcseconds is used. Such a large association criterion can of course lead to spurious pairings in the merged sources lists (although note that between passband pairs, handshake pairing is done: both passbands must agree that the candidate pair is their nearest neighbour for the pair to propagate through into the merged source table). In order to help filter spurious pairings out, and assuming that large positional offsets between the different passband detections are not expected (e.g. because of source motion, or larger than usual positional uncertainties) then the attributes Xi and Eta can be used to filter any pairings with suspiciously large offsets in one or more bands. For example, for a clean sample of QSOs from the VHS, you might wish to insist that the offsets in the selected sample are all below 0.5 arcsecond: simply add WHERE clauses into the SQL sample selection script to exclude all Xi and Eta values larger than the threshold you want. NB: the master position is the position of the detection in the shortest passband in the set, rather than the ra/dec of the source as stored in source attributes of the same name. The former is used in the pairing process, while the latter is generally the optimally weighted mean position from an astrometric solution or other combinatorial process of all individual detection positions across the available passbands.

gEta atlasSource ATLASDR3 Offset of G detection from master position (+north/-south) real 4 arcsec -0.9999995e9 pos.eq.dec;arith.diff;em.opt.B

When associating individual passband detections into merged sources, a generous (in terms of the positional uncertainties) pairing radius of 1.0 arcseconds is used. Such a large association criterion can of course lead to spurious pairings in the merged sources lists (although note that between passband pairs, handshake pairing is done: both passbands must agree that the candidate pair is their nearest neighbour for the pair to propagate through into the merged source table). In order to help filter spurious pairings out, and assuming that large positional offsets between the different passband detections are not expected (e.g. because of source motion, or larger than usual positional uncertainties) then the attributes Xi and Eta can be used to filter any pairings with suspiciously large offsets in one or more bands. For example, for a clean sample of QSOs from the VHS, you might wish to insist that the offsets in the selected sample are all below 0.5 arcsecond: simply add WHERE clauses into the SQL sample selection script to exclude all Xi and Eta values larger than the threshold you want. NB: the master position is the position of the detection in the shortest passband in the set, rather than the ra/dec of the source as stored in source attributes of the same name. The former is used in the pairing process, while the latter is generally the optimally weighted mean position from an astrometric solution or other combinatorial process of all individual detection positions across the available passbands.

gEta atlasSource ATLASDR4 Offset of G detection from master position (+north/-south) real 4 arcsec -0.9999995e9 pos.eq.dec;arith.diff;em.opt.B

When associating individual passband detections into merged sources, a generous (in terms of the positional uncertainties) pairing radius of 1.0 arcseconds is used. Such a large association criterion can of course lead to spurious pairings in the merged sources lists (although note that between passband pairs, handshake pairing is done: both passbands must agree that the candidate pair is their nearest neighbour for the pair to propagate through into the merged source table). In order to help filter spurious pairings out, and assuming that large positional offsets between the different passband detections are not expected (e.g. because of source motion, or larger than usual positional uncertainties) then the attributes Xi and Eta can be used to filter any pairings with suspiciously large offsets in one or more bands. For example, for a clean sample of QSOs from the VHS, you might wish to insist that the offsets in the selected sample are all below 0.5 arcsecond: simply add WHERE clauses into the SQL sample selection script to exclude all Xi and Eta values larger than the threshold you want. NB: the master position is the position of the detection in the shortest passband in the set, rather than the ra/dec of the source as stored in source attributes of the same name. The former is used in the pairing process, while the latter is generally the optimally weighted mean position from an astrometric solution or other combinatorial process of all individual detection positions across the available passbands.

gEta atlasSource ATLASDR5 Offset of G detection from master position (+north/-south) real 4 arcsec -0.9999995e9 pos.eq.dec;arith.diff;em.opt.B

When associating individual passband detections into merged sources, a generous (in terms of the positional uncertainties) pairing radius of 1.0 arcseconds is used. Such a large association criterion can of course lead to spurious pairings in the merged sources lists (although note that between passband pairs, handshake pairing is done: both passbands must agree that the candidate pair is their nearest neighbour for the pair to propagate through into the merged source table). In order to help filter spurious pairings out, and assuming that large positional offsets between the different passband detections are not expected (e.g. because of source motion, or larger than usual positional uncertainties) then the attributes Xi and Eta can be used to filter any pairings with suspiciously large offsets in one or more bands. For example, for a clean sample of QSOs from the VHS, you might wish to insist that the offsets in the selected sample are all below 0.5 arcsecond: simply add WHERE clauses into the SQL sample selection script to exclude all Xi and Eta values larger than the threshold you want. NB: the master position is the position of the detection in the shortest passband in the set, rather than the ra/dec of the source as stored in source attributes of the same name. The former is used in the pairing process, while the latter is generally the optimally weighted mean position from an astrometric solution or other combinatorial process of all individual detection positions across the available passbands.

gEta atlasSource ATLASv20131127 Offset of G detection from master position (+north/-south) real 4 arcsec -0.9999995e9 pos.eq.dec;arith.diff

When associating individual passband detections into merged sources, a generous (in terms of the positional uncertainties) pairing radius of 1.0 arcseconds is used. Such a large association criterion can of course lead to spurious pairings in the merged sources lists (although note that between passband pairs, handshake pairing is done: both passbands must agree that the candidate pair is their nearest neighbour for the pair to propagate through into the merged source table). In order to help filter spurious pairings out, and assuming that large positional offsets between the different passband detections are not expected (e.g. because of source motion, or larger than usual positional uncertainties) then the attributes Xi and Eta can be used to filter any pairings with suspiciously large offsets in one or more bands. For example, for a clean sample of QSOs from the VHS, you might wish to insist that the offsets in the selected sample are all below 0.5 arcsecond: simply add WHERE clauses into the SQL sample selection script to exclude all Xi and Eta values larger than the threshold you want. NB: the master position is the position of the detection in the shortest passband in the set, rather than the ra/dec of the source as stored in source attributes of the same name. The former is used in the pairing process, while the latter is generally the optimally weighted mean position from an astrometric solution or other combinatorial process of all individual detection positions across the available passbands.

gEta atlasSource ATLASv20160425 Offset of G detection from master position (+north/-south) real 4 arcsec -0.9999995e9 pos.eq.dec;arith.diff;em.opt.B

When associating individual passband detections into merged sources, a generous (in terms of the positional uncertainties) pairing radius of 1.0 arcseconds is used. Such a large association criterion can of course lead to spurious pairings in the merged sources lists (although note that between passband pairs, handshake pairing is done: both passbands must agree that the candidate pair is their nearest neighbour for the pair to propagate through into the merged source table). In order to help filter spurious pairings out, and assuming that large positional offsets between the different passband detections are not expected (e.g. because of source motion, or larger than usual positional uncertainties) then the attributes Xi and Eta can be used to filter any pairings with suspiciously large offsets in one or more bands. For example, for a clean sample of QSOs from the VHS, you might wish to insist that the offsets in the selected sample are all below 0.5 arcsecond: simply add WHERE clauses into the SQL sample selection script to exclude all Xi and Eta values larger than the threshold you want. NB: the master position is the position of the detection in the shortest passband in the set, rather than the ra/dec of the source as stored in source attributes of the same name. The former is used in the pairing process, while the latter is generally the optimally weighted mean position from an astrometric solution or other combinatorial process of all individual detection positions across the available passbands.

gEta atlasSource ATLASv20180209 Offset of G detection from master position (+north/-south) real 4 arcsec -0.9999995e9 pos.eq.dec;arith.diff;em.opt.B

When associating individual passband detections into merged sources, a generous (in terms of the positional uncertainties) pairing radius of 1.0 arcseconds is used. Such a large association criterion can of course lead to spurious pairings in the merged sources lists (although note that between passband pairs, handshake pairing is done: both passbands must agree that the candidate pair is their nearest neighbour for the pair to propagate through into the merged source table). In order to help filter spurious pairings out, and assuming that large positional offsets between the different passband detections are not expected (e.g. because of source motion, or larger than usual positional uncertainties) then the attributes Xi and Eta can be used to filter any pairings with suspiciously large offsets in one or more bands. For example, for a clean sample of QSOs from the VHS, you might wish to insist that the offsets in the selected sample are all below 0.5 arcsecond: simply add WHERE clauses into the SQL sample selection script to exclude all Xi and Eta values larger than the threshold you want. NB: the master position is the position of the detection in the shortest passband in the set, rather than the ra/dec of the source as stored in source attributes of the same name. The former is used in the pairing process, while the latter is generally the optimally weighted mean position from an astrometric solution or other combinatorial process of all individual detection positions across the available passbands.

gEta vphasSource VPHASDR3 Offset of G detection from master position (+north/-south) real 4 arcsec -0.9999995e9 pos.eq.dec;arith.diff;em.opt.B

When associating individual passband detections into merged sources, a generous (in terms of the positional uncertainties) pairing radius of 1.0 arcseconds is used. Such a large association criterion can of course lead to spurious pairings in the merged sources lists (although note that between passband pairs, handshake pairing is done: both passbands must agree that the candidate pair is their nearest neighbour for the pair to propagate through into the merged source table). In order to help filter spurious pairings out, and assuming that large positional offsets between the different passband detections are not expected (e.g. because of source motion, or larger than usual positional uncertainties) then the attributes Xi and Eta can be used to filter any pairings with suspiciously large offsets in one or more bands. For example, for a clean sample of QSOs from the VHS, you might wish to insist that the offsets in the selected sample are all below 0.5 arcsecond: simply add WHERE clauses into the SQL sample selection script to exclude all Xi and Eta values larger than the threshold you want. NB: the master position is the position of the detection in the shortest passband in the set, rather than the ra/dec of the source as stored in source attributes of the same name. The former is used in the pairing process, while the latter is generally the optimally weighted mean position from an astrometric solution or other combinatorial process of all individual detection positions across the available passbands.

gEta vphasSource VPHASv20160112 Offset of G detection from master position (+north/-south) real 4 arcsec -0.9999995e9 pos.eq.dec;arith.diff;em.opt.B

When associating individual passband detections into merged sources, a generous (in terms of the positional uncertainties) pairing radius of 1.0 arcseconds is used. Such a large association criterion can of course lead to spurious pairings in the merged sources lists (although note that between passband pairs, handshake pairing is done: both passbands must agree that the candidate pair is their nearest neighbour for the pair to propagate through into the merged source table). In order to help filter spurious pairings out, and assuming that large positional offsets between the different passband detections are not expected (e.g. because of source motion, or larger than usual positional uncertainties) then the attributes Xi and Eta can be used to filter any pairings with suspiciously large offsets in one or more bands. For example, for a clean sample of QSOs from the VHS, you might wish to insist that the offsets in the selected sample are all below 0.5 arcsecond: simply add WHERE clauses into the SQL sample selection script to exclude all Xi and Eta values larger than the threshold you want. NB: the master position is the position of the detection in the shortest passband in the set, rather than the ra/dec of the source as stored in source attributes of the same name. The former is used in the pairing process, while the latter is generally the optimally weighted mean position from an astrometric solution or other combinatorial process of all individual detection positions across the available passbands.

gEta vphasSource VPHASv20170222 Offset of G detection from master position (+north/-south) real 4 arcsec -0.9999995e9 pos.eq.dec;arith.diff;em.opt.B

When associating individual passband detections into merged sources, a generous (in terms of the positional uncertainties) pairing radius of 1.0 arcseconds is used. Such a large association criterion can of course lead to spurious pairings in the merged sources lists (although note that between passband pairs, handshake pairing is done: both passbands must agree that the candidate pair is their nearest neighbour for the pair to propagate through into the merged source table). In order to help filter spurious pairings out, and assuming that large positional offsets between the different passband detections are not expected (e.g. because of source motion, or larger than usual positional uncertainties) then the attributes Xi and Eta can be used to filter any pairings with suspiciously large offsets in one or more bands. For example, for a clean sample of QSOs from the VHS, you might wish to insist that the offsets in the selected sample are all below 0.5 arcsecond: simply add WHERE clauses into the SQL sample selection script to exclude all Xi and Eta values larger than the threshold you want. NB: the master position is the position of the detection in the shortest passband in the set, rather than the ra/dec of the source as stored in source attributes of the same name. The former is used in the pairing process, while the latter is generally the optimally weighted mean position from an astrometric solution or other combinatorial process of all individual detection positions across the available passbands.

gGausig atlasSource ATLASDR1 RMS of axes of ellipse fit in G real 4 pixels -0.9999995e9 src.morph.param

gGausig atlasSource ATLASDR2 RMS of axes of ellipse fit in G real 4 pixels -0.9999995e9 src.morph.param

gGausig atlasSource ATLASDR3 RMS of axes of ellipse fit in G real 4 pixels -0.9999995e9 src.morph.param;em.opt.B

gGausig atlasSource ATLASDR4 RMS of axes of ellipse fit in G real 4 pixels -0.9999995e9 src.morph.param;em.opt.B

gGausig atlasSource ATLASDR5 RMS of axes of ellipse fit in G real 4 pixels -0.9999995e9 src.morph.param;em.opt.B

gGausig atlasSource ATLASv20131127 RMS of axes of ellipse fit in G real 4 pixels -0.9999995e9 src.morph.param

gGausig atlasSource ATLASv20160425 RMS of axes of ellipse fit in G real 4 pixels -0.9999995e9 src.morph.param;em.opt.B

gGausig atlasSource ATLASv20180209 RMS of axes of ellipse fit in G real 4 pixels -0.9999995e9 src.morph.param;em.opt.B

gGausig vphasSource VPHASDR3 RMS of axes of ellipse fit in G real 4 pixels -0.9999995e9 src.morph.param;em.opt.B

gGausig vphasSource VPHASv20160112 RMS of axes of ellipse fit in G real 4 pixels -0.9999995e9 src.morph.param;em.opt.B

gGausig vphasSource VPHASv20170222 RMS of axes of ellipse fit in G real 4 pixels -0.9999995e9 src.morph.param;em.opt.B

gHlCorSMjRadAs atlasSource ATLASDR1 Seeing corrected half-light, semi-major axis in G band real 4 arcsec -0.9999995e9 phys.angSize;src

gHlCorSMjRadAs atlasSource ATLASDR2 Seeing corrected half-light, semi-major axis in G band real 4 arcsec -0.9999995e9 phys.angSize;src

gHlCorSMjRadAs atlasSource ATLASDR3 Seeing corrected half-light, semi-major axis in G band real 4 arcsec -0.9999995e9 phys.angSize;em.opt.B

gHlCorSMjRadAs atlasSource ATLASDR4 Seeing corrected half-light, semi-major axis in G band real 4 arcsec -0.9999995e9 phys.angSize;em.opt.B

gHlCorSMjRadAs atlasSource ATLASDR5 Seeing corrected half-light, semi-major axis in G band real 4 arcsec -0.9999995e9 phys.angSize;em.opt.B

gHlCorSMjRadAs atlasSource ATLASv20131127 Seeing corrected half-light, semi-major axis in G band real 4 arcsec -0.9999995e9 phys.angSize;src

gHlCorSMjRadAs atlasSource ATLASv20160425 Seeing corrected half-light, semi-major axis in G band real 4 arcsec -0.9999995e9 phys.angSize;em.opt.B

gHlCorSMjRadAs atlasSource ATLASv20180209 Seeing corrected half-light, semi-major axis in G band real 4 arcsec -0.9999995e9 phys.angSize;em.opt.B

gKronMag atlasSource ATLASDR4 Extended source G mag (Kron) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gKronMag atlasSource ATLASDR5 Extended source G mag (Kron) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gKronMag atlasSource ATLASv20180209 Extended source G mag (Kron) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gKronMagErr atlasSource ATLASDR4 Error in extended source G mag (Kron) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gKronMagErr atlasSource ATLASDR5 Error in extended source G mag (Kron) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gKronMagErr atlasSource ATLASv20180209 Error in extended source G mag (Kron) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

Glat ravedr5Source RAVE Latitude (J2000 GCS) float 8 deg pos.galactic.lat

glat allwise_sc WISE Galactic latitude computed from the non-moving source fit equatorial position. CAUTION: This coordinate should not be used as an astrometric reference. float 8 deg

glat catwise_2020, catwise_prelim WISE galactic latitude float 8 deg

glat twomass_psc TWOMASS Galactic latitude rounded to 0.001 deg. real 4 degrees pos.galactic.lat

glat twomass_scn TWOMASS Galactic latitude of scan center, as computed from ra and dec above. real 4 degrees pos.galactic.lat

glat twomass_sixx2_scn TWOMASS galactic latitude (decimal deg) of scan center float 8 deg

glat twomass_xsc TWOMASS Galactic latitude (decimal deg) based on peak pixel. real 4 degrees pos.galactic.lat

glat wise_allskysc WISE Galactic latitude. CAUTION: This coordinate should not be used as an astrometric reference. float 8 degrees

glat wise_prelimsc WISE Galactic latitude. CAUTION: This coordinate should not be used as an astrometric reference float 8 degrees

Glon ravedr5Source RAVE Longitude (J2000 GCS) float 8 deg pos.galactic.lon

glon allwise_sc WISE Galactic longitude, computed from the non-moving source fit equatorial position. CAUTION: This coordinate should not be used as an astrometric reference. float 8 deg

glon catwise_2020, catwise_prelim WISE galactic longitude float 8 deg

glon twomass_psc TWOMASS Galactic longitude rounded to 0.001 deg. real 4 degrees pos.galactic.lon

glon twomass_scn TWOMASS Galactic longitude of scan center, as computed from ra and dec above. real 4 degrees pos.galactic.lon

glon twomass_sixx2_scn TWOMASS galactic longitude (decimal deg) of scan center float 8 deg

glon twomass_xsc TWOMASS Galactic longitude (decimal deg) based on peak pixel. real 4 degrees pos.galactic.lon

glon wise_allskysc WISE Galactic longitude. CAUTION: This coordinate should not be used as an astrometric reference. float 8 degrees

glon wise_prelimsc WISE Galactic longitude. CAUTION: This coordinate should not be used as an astrometric reference float 8 degrees

gmfID atlasMergeLog ATLASDR1 the UID of the relevant G multiframe bigint 8 obs.field

gmfID atlasMergeLog ATLASDR2 the UID of the relevant G multiframe bigint 8 obs.field

gmfID atlasMergeLog ATLASDR3 the UID of the relevant G multiframe bigint 8 meta.id;obs.field;em.opt.B

gmfID atlasMergeLog ATLASDR4 the UID of the relevant G multiframe bigint 8 meta.id;obs.field;em.opt.B

gmfID atlasMergeLog ATLASDR5 the UID of the relevant G multiframe bigint 8 meta.id;obs.field;em.opt.B

gmfID atlasMergeLog ATLASv20131127 the UID of the relevant G multiframe bigint 8 obs.field

gmfID atlasMergeLog ATLASv20160425 the UID of the relevant G multiframe bigint 8 meta.id;obs.field;em.opt.B

gmfID atlasMergeLog ATLASv20180209 the UID of the relevant G multiframe bigint 8 meta.id;obs.field;em.opt.B

gmfID vphasMergeLog VPHASDR3 the UID of the relevant G multiframe bigint 8 meta.id;obs.field;em.opt.B

gmfID vphasMergeLog VPHASv20160112 the UID of the relevant G multiframe bigint 8 meta.id;obs.field;em.opt.B

gmfID vphasMergeLog VPHASv20170222 the UID of the relevant G multiframe bigint 8 meta.id;obs.field;em.opt.B

gMjd atlasSource ATLASDR3 The mean Modified Julian Day of each detection float 8 day -0.9999995e9 time.epoch

gMjd atlasSource ATLASDR4 The mean Modified Julian Day of each detection float 8 day -0.9999995e9 time.epoch;em.opt.B

gMjd atlasSource ATLASDR5 The mean Modified Julian Day of each detection float 8 day -0.9999995e9 time.epoch;em.opt.B

gMjd atlasSource ATLASv20160425 The mean Modified Julian Day of each detection float 8 day -0.9999995e9 time.epoch

gMjd atlasSource ATLASv20180209 The mean Modified Julian Day of each detection float 8 day -0.9999995e9 time.epoch;em.opt.B

gMjd vphasSource VPHASDR3 The mean Modified Julian Day of each detection float 8 day -0.9999995e9 time.epoch;em.opt.B

gMjd vphasSource VPHASv20160112 The mean Modified Julian Day of each detection float 8 day -0.9999995e9 time.epoch

gMjd vphasSource VPHASv20170222 The mean Modified Julian Day of each detection float 8 day -0.9999995e9 time.epoch

gmr_1Ext vphasSource VPHASDR3 Extended source colour G-R_1 (using aperMagNoAperCorr3) real 4 mag -0.9999995e9 phot.color;em.opt.B;em.opt.R

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmr_1Ext vphasSource VPHASv20160112 Extended source colour G-R_1 (using aperMagNoAperCorr3) real 4 mag -0.9999995e9 phot.color;em.opt.B

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmr_1Ext vphasSource VPHASv20170222 Extended source colour G-R_1 (using aperMagNoAperCorr3) real 4 mag -0.9999995e9 phot.color;em.opt.B

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmr_1ExtErr vphasSource VPHASDR3 Error on extended source colour G-R_1 real 4 mag -0.9999995e9 stat.error;em.opt.B;em.opt.R

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmr_1ExtErr vphasSource VPHASv20160112 Error on extended source colour G-R_1 real 4 mag -0.9999995e9 stat.error;em.opt.B

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmr_1ExtErr vphasSource VPHASv20170222 Error on extended source colour G-R_1 real 4 mag -0.9999995e9 stat.error;em.opt.B

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmr_1Pnt vphasSource VPHASDR3 Point source colour G-R_1 (using aperMag3) real 4 mag -0.9999995e9 phot.color;em.opt.B;em.opt.R

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmr_1Pnt vphasSource VPHASv20160112 Point source colour G-R_1 (using aperMag3) real 4 mag -0.9999995e9 phot.color;em.opt.B

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmr_1Pnt vphasSource VPHASv20170222 Point source colour G-R_1 (using aperMag3) real 4 mag -0.9999995e9 phot.color;em.opt.B

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmr_1PntErr vphasSource VPHASDR3 Error on point source colour G-R_1 real 4 mag -0.9999995e9 stat.error;em.opt.B;em.opt.R

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmr_1PntErr vphasSource VPHASv20160112 Error on point source colour G-R_1 real 4 mag -0.9999995e9 stat.error;em.opt.B

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmr_1PntErr vphasSource VPHASv20170222 Error on point source colour G-R_1 real 4 mag -0.9999995e9 stat.error;em.opt.B

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmr_2Ext vphasSource VPHASDR3 Extended source colour G-R_2 (using aperMagNoAperCorr3) real 4 mag -0.9999995e9 phot.color;em.opt.B;em.opt.R

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmr_2Ext vphasSource VPHASv20160112 Extended source colour G-R_2 (using aperMagNoAperCorr3) real 4 mag -0.9999995e9 phot.color;em.opt.B

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmr_2Ext vphasSource VPHASv20170222 Extended source colour G-R_2 (using aperMagNoAperCorr3) real 4 mag -0.9999995e9 phot.color;em.opt.B

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmr_2ExtErr vphasSource VPHASDR3 Error on extended source colour G-R_2 real 4 mag -0.9999995e9 stat.error;em.opt.B;em.opt.R

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmr_2ExtErr vphasSource VPHASv20160112 Error on extended source colour G-R_2 real 4 mag -0.9999995e9 stat.error;em.opt.B

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmr_2ExtErr vphasSource VPHASv20170222 Error on extended source colour G-R_2 real 4 mag -0.9999995e9 stat.error;em.opt.B

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmr_2Pnt vphasSource VPHASDR3 Point source colour G-R_2 (using aperMag3) real 4 mag -0.9999995e9 phot.color;em.opt.B;em.opt.R

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmr_2Pnt vphasSource VPHASv20160112 Point source colour G-R_2 (using aperMag3) real 4 mag -0.9999995e9 phot.color;em.opt.B

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmr_2Pnt vphasSource VPHASv20170222 Point source colour G-R_2 (using aperMag3) real 4 mag -0.9999995e9 phot.color;em.opt.B

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmr_2PntErr vphasSource VPHASDR3 Error on point source colour G-R_2 real 4 mag -0.9999995e9 stat.error;em.opt.B;em.opt.R

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmr_2PntErr vphasSource VPHASv20160112 Error on point source colour G-R_2 real 4 mag -0.9999995e9 stat.error;em.opt.B

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmr_2PntErr vphasSource VPHASv20170222 Error on point source colour G-R_2 real 4 mag -0.9999995e9 stat.error;em.opt.B

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmrExt atlasSource ATLASDR1 Extended source colour G-R (using aperMagNoAperCorr3) real 4 mag -0.9999995e9 PHOT_COLOR

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmrExt atlasSource ATLASDR2 Extended source colour G-R (using aperMagNoAperCorr3) real 4 mag -0.9999995e9 PHOT_COLOR

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmrExt atlasSource ATLASDR3 Extended source colour G-R (using aperMagNoAperCorr3) real 4 mag -0.9999995e9 phot.color;em.opt.B;em.opt.R

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmrExt atlasSource ATLASDR4 Extended source colour G-R (using aperMagNoAperCorr3) real 4 mag -0.9999995e9 phot.color;em.opt.B;em.opt.R

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmrExt atlasSource ATLASDR5 Extended source colour G-R (using aperMagNoAperCorr3) real 4 mag -0.9999995e9 phot.color;em.opt.B;em.opt.R

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmrExt atlasSource ATLASv20131127 Extended source colour G-R (using aperMagNoAperCorr3) real 4 mag -0.9999995e9 PHOT_COLOR

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmrExt atlasSource ATLASv20160425 Extended source colour G-R (using aperMagNoAperCorr3) real 4 mag -0.9999995e9 phot.color;em.opt.B;em.opt.R

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmrExt atlasSource ATLASv20180209 Extended source colour G-R (using aperMagNoAperCorr3) real 4 mag -0.9999995e9 phot.color;em.opt.B;em.opt.R

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmrExtErr atlasSource ATLASDR1 Error on extended source colour G-R real 4 mag -0.9999995e9 stat.error

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmrExtErr atlasSource ATLASDR2 Error on extended source colour G-R real 4 mag -0.9999995e9 stat.error

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmrExtErr atlasSource ATLASDR3 Error on extended source colour G-R real 4 mag -0.9999995e9 stat.error;em.opt.B;em.opt.R

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmrExtErr atlasSource ATLASDR4 Error on extended source colour G-R real 4 mag -0.9999995e9 stat.error;em.opt.B;em.opt.R

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmrExtErr atlasSource ATLASDR5 Error on extended source colour G-R real 4 mag -0.9999995e9 stat.error;em.opt.B;em.opt.R

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmrExtErr atlasSource ATLASv20131127 Error on extended source colour G-R real 4 mag -0.9999995e9 stat.error

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmrExtErr atlasSource ATLASv20160425 Error on extended source colour G-R real 4 mag -0.9999995e9 stat.error;em.opt.B;em.opt.R

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmrExtErr atlasSource ATLASv20180209 Error on extended source colour G-R real 4 mag -0.9999995e9 stat.error;em.opt.B;em.opt.R

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmrPnt atlasSource ATLASDR1 Point source colour G-R (using aperMag3) real 4 mag -0.9999995e9 PHOT_COLOR

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmrPnt atlasSource ATLASDR2 Point source colour G-R (using aperMag3) real 4 mag -0.9999995e9 PHOT_COLOR

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmrPnt atlasSource ATLASDR3 Point source colour G-R (using aperMag3) real 4 mag -0.9999995e9 phot.color;em.opt.B;em.opt.R

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmrPnt atlasSource ATLASDR4 Point source colour G-R (using aperMag3) real 4 mag -0.9999995e9 phot.color;em.opt.B;em.opt.R

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmrPnt atlasSource ATLASDR5 Point source colour G-R (using aperMag3) real 4 mag -0.9999995e9 phot.color;em.opt.B;em.opt.R

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmrPnt atlasSource ATLASv20131127 Point source colour G-R (using aperMag3) real 4 mag -0.9999995e9 PHOT_COLOR

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmrPnt atlasSource ATLASv20160425 Point source colour G-R (using aperMag3) real 4 mag -0.9999995e9 phot.color;em.opt.B;em.opt.R

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmrPnt atlasSource ATLASv20180209 Point source colour G-R (using aperMag3) real 4 mag -0.9999995e9 phot.color;em.opt.B;em.opt.R

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmrPntErr atlasSource ATLASDR1 Error on point source colour G-R real 4 mag -0.9999995e9 stat.error

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmrPntErr atlasSource ATLASDR2 Error on point source colour G-R real 4 mag -0.9999995e9 stat.error

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmrPntErr atlasSource ATLASDR3 Error on point source colour G-R real 4 mag -0.9999995e9 stat.error;em.opt.B;em.opt.R

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmrPntErr atlasSource ATLASDR4 Error on point source colour G-R real 4 mag -0.9999995e9 stat.error;em.opt.B;em.opt.R

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmrPntErr atlasSource ATLASDR5 Error on point source colour G-R real 4 mag -0.9999995e9 stat.error;em.opt.B;em.opt.R

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmrPntErr atlasSource ATLASv20131127 Error on point source colour G-R real 4 mag -0.9999995e9 stat.error

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmrPntErr atlasSource ATLASv20160425 Error on point source colour G-R real 4 mag -0.9999995e9 stat.error;em.opt.B;em.opt.R

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gmrPntErr atlasSource ATLASv20180209 Error on point source colour G-R real 4 mag -0.9999995e9 stat.error;em.opt.B;em.opt.R

Default colours from pairs of adjacent passbands within a given set (e.g. Y-J, J-H and H-K for YJHK) are recorded in the merged source table for ease of querying and speedy querying via indexing of these attributes. Presently, the point-source colours and extended source colours are computed from the aperture corrected AperMag3 fixed 2 arcsec aperture diameter measures (for consistent measurement across all passbands) and generally good signal-to-noise. At some point in the future, this may be changed such that point-source colours will be computed from the PSF-fitted measures and extended source colours computed from the 2-d Sersic model profile fits.

gPA atlasSource ATLASDR1 ellipse fit celestial orientation in G real 4 Degrees -0.9999995e9 pos.posAng

gPA atlasSource ATLASDR2 ellipse fit celestial orientation in G real 4 Degrees -0.9999995e9 pos.posAng

gPA atlasSource ATLASDR3 ellipse fit celestial orientation in G real 4 Degrees -0.9999995e9 pos.posAng;em.opt.B

gPA atlasSource ATLASDR4 ellipse fit celestial orientation in G real 4 Degrees -0.9999995e9 pos.posAng;em.opt.B

gPA atlasSource ATLASDR5 ellipse fit celestial orientation in G real 4 Degrees -0.9999995e9 pos.posAng;em.opt.B

gPA atlasSource ATLASv20131127 ellipse fit celestial orientation in G real 4 Degrees -0.9999995e9 pos.posAng

gPA atlasSource ATLASv20160425 ellipse fit celestial orientation in G real 4 Degrees -0.9999995e9 pos.posAng;em.opt.B

gPA atlasSource ATLASv20180209 ellipse fit celestial orientation in G real 4 Degrees -0.9999995e9 pos.posAng;em.opt.B

gPA vphasSource VPHASDR3 ellipse fit celestial orientation in G real 4 Degrees -0.9999995e9 pos.posAng;em.opt.B

gPA vphasSource VPHASv20160112 ellipse fit celestial orientation in G real 4 Degrees -0.9999995e9 pos.posAng;em.opt.B

gPA vphasSource VPHASv20170222 ellipse fit celestial orientation in G real 4 Degrees -0.9999995e9 pos.posAng;em.opt.B

gPetroMag atlasSource ATLASDR1 Extended source G mag (Petrosian) real 4 mag -0.9999995e9 phot.mag

gPetroMag atlasSource ATLASDR2 Extended source G mag (Petrosian) real 4 mag -0.9999995e9 phot.mag

gPetroMag atlasSource ATLASDR3 Extended source G mag (Petrosian) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gPetroMag atlasSource ATLASDR4 Extended source G mag (Petrosian) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gPetroMag atlasSource ATLASDR5 Extended source G mag (Petrosian) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gPetroMag atlasSource ATLASv20131127 Extended source G mag (Petrosian) real 4 mag -0.9999995e9 phot.mag

gPetroMag atlasSource ATLASv20160425 Extended source G mag (Petrosian) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gPetroMag atlasSource ATLASv20180209 Extended source G mag (Petrosian) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gPetroMag vphasSource VPHASDR3 Extended source G mag (Petrosian) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gPetroMag vphasSource VPHASv20160112 Extended source G mag (Petrosian) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gPetroMag vphasSource VPHASv20170222 Extended source G mag (Petrosian) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gPetroMagErr atlasSource ATLASDR1 Error in extended source G mag (Petrosian) real 4 mag -0.9999995e9 stat.error

gPetroMagErr atlasSource ATLASDR2 Error in extended source G mag (Petrosian) real 4 mag -0.9999995e9 stat.error

gPetroMagErr atlasSource ATLASDR3 Error in extended source G mag (Petrosian) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gPetroMagErr atlasSource ATLASDR4 Error in extended source G mag (Petrosian) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gPetroMagErr atlasSource ATLASDR5 Error in extended source G mag (Petrosian) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gPetroMagErr atlasSource ATLASv20131127 Error in extended source G mag (Petrosian) real 4 mag -0.9999995e9 stat.error

gPetroMagErr atlasSource ATLASv20160425 Error in extended source G mag (Petrosian) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gPetroMagErr atlasSource ATLASv20180209 Error in extended source G mag (Petrosian) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gPetroMagErr vphasSource VPHASDR3 Error in extended source G mag (Petrosian) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gPetroMagErr vphasSource VPHASv20160112 Error in extended source G mag (Petrosian) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gPetroMagErr vphasSource VPHASv20170222 Error in extended source G mag (Petrosian) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gpmag_APASSDR9 ravedr5Source RAVE g' magnitude from APASSDR9 real 4 mag phot.mag;em.opt

gppErrBits atlasSource ATLASDR1 additional WFAU post-processing error bits in G int 4 0 meta.code

Post-processing error quality bit flags assigned to detections in the archive curation procedure for survey data. From least to most significant byte in the 4-byte integer attribute byte 0 (bits 0 to 7) corresponds to information on generally innocuous conditions that are nonetheless potentially significant as regards the integrity of that detection; byte 1 (bits 8 to 15) corresponds to warnings; byte 2 (bits 16 to 23) corresponds to important warnings; and finally byte 3 (bits 24 to 31) corresponds to severe warnings:

Byte Bit Detection quality issue Threshold or bit mask Applies to

Decimal Hexadecimal

0 4 Deblended 16 0x00000010 All VDFS catalogues

0 6 Bad pixel(s) in default aperture 64 0x00000040 All VDFS catalogues

0 7 Low confidence in default aperture 128 0x00000080 All VDFS catalogues

1 12 Lies within detector 16 region of a tile 4096 0x00001000 All catalogues from tiles

2 16 Close to saturated 65536 0x00010000 All VDFS catalogues

2 17 Photometric calibration probably subject to systematic error 131072 0x00020000 VVV only

2 22 Lies within a dither offset of the stacked frame boundary 4194304 0x00400000 All catalogues

2 23 Lies within the underexposed strip (or "ear") of a tile 8388608 0x00800000 All catalogues from tiles

3 24 Lies within an underexposed region of a tile due to missing detector 16777216 0x01000000 All catalogues from tiles

In this way, the higher the error quality bit flag value, the more likely it is that the detection is spurious. The decimal threshold (column 4) gives the minimum value of the quality flag for a detection having the given condition (since other bits in the flag may be set also; the corresponding hexadecimal value, where each digit corresponds to 4 bits in the flag, can be easier to compute when writing SQL queries to test for a given condition). For example, to exclude all Ks band sources in the VHS having any error quality condition other than informational ones, include a predicate ... AND kppErrBits ≤ 255. See the SQL Cookbook and other online pages for further information.

gppErrBits atlasSource ATLASDR2 additional WFAU post-processing error bits in G int 4 0 meta.code

Post-processing error quality bit flags assigned to detections in the archive curation procedure for survey data. From least to most significant byte in the 4-byte integer attribute byte 0 (bits 0 to 7) corresponds to information on generally innocuous conditions that are nonetheless potentially significant as regards the integrity of that detection; byte 1 (bits 8 to 15) corresponds to warnings; byte 2 (bits 16 to 23) corresponds to important warnings; and finally byte 3 (bits 24 to 31) corresponds to severe warnings:

Byte Bit Detection quality issue Threshold or bit mask Applies to

Decimal Hexadecimal

0 4 Deblended 16 0x00000010 All VDFS catalogues

0 6 Bad pixel(s) in default aperture 64 0x00000040 All VDFS catalogues

0 7 Low confidence in default aperture 128 0x00000080 All VDFS catalogues

1 12 Lies within detector 16 region of a tile 4096 0x00001000 All catalogues from tiles

2 16 Close to saturated 65536 0x00010000 All VDFS catalogues

2 17 Photometric calibration probably subject to systematic error 131072 0x00020000 VVV only

2 22 Lies within a dither offset of the stacked frame boundary 4194304 0x00400000 All catalogues

2 23 Lies within the underexposed strip (or "ear") of a tile 8388608 0x00800000 All catalogues from tiles

3 24 Lies within an underexposed region of a tile due to missing detector 16777216 0x01000000 All catalogues from tiles

In this way, the higher the error quality bit flag value, the more likely it is that the detection is spurious. The decimal threshold (column 4) gives the minimum value of the quality flag for a detection having the given condition (since other bits in the flag may be set also; the corresponding hexadecimal value, where each digit corresponds to 4 bits in the flag, can be easier to compute when writing SQL queries to test for a given condition). For example, to exclude all Ks band sources in the VHS having any error quality condition other than informational ones, include a predicate ... AND kppErrBits ≤ 255. See the SQL Cookbook and other online pages for further information.

gppErrBits atlasSource ATLASDR3 additional WFAU post-processing error bits in G int 4 0 meta.code;em.opt.B

Post-processing error quality bit flags assigned to detections in the archive curation procedure for survey data. From least to most significant byte in the 4-byte integer attribute byte 0 (bits 0 to 7) corresponds to information on generally innocuous conditions that are nonetheless potentially significant as regards the integrity of that detection; byte 1 (bits 8 to 15) corresponds to warnings; byte 2 (bits 16 to 23) corresponds to important warnings; and finally byte 3 (bits 24 to 31) corresponds to severe warnings:

Byte Bit Detection quality issue Threshold or bit mask Applies to

Decimal Hexadecimal

0 4 Deblended 16 0x00000010 All VDFS catalogues

0 6 Bad pixel(s) in default aperture 64 0x00000040 All VDFS catalogues

0 7 Low confidence in default aperture 128 0x00000080 All VDFS catalogues

1 12 Lies within detector 16 region of a tile 4096 0x00001000 All catalogues from tiles

2 16 Close to saturated 65536 0x00010000 All VDFS catalogues

2 17 Photometric calibration probably subject to systematic error 131072 0x00020000 VVV only

2 22 Lies within a dither offset of the stacked frame boundary 4194304 0x00400000 All catalogues

2 23 Lies within the underexposed strip (or "ear") of a tile 8388608 0x00800000 All catalogues from tiles

3 24 Lies within an underexposed region of a tile due to missing detector 16777216 0x01000000 All catalogues from tiles

In this way, the higher the error quality bit flag value, the more likely it is that the detection is spurious. The decimal threshold (column 4) gives the minimum value of the quality flag for a detection having the given condition (since other bits in the flag may be set also; the corresponding hexadecimal value, where each digit corresponds to 4 bits in the flag, can be easier to compute when writing SQL queries to test for a given condition). For example, to exclude all Ks band sources in the VHS having any error quality condition other than informational ones, include a predicate ... AND kppErrBits ≤ 255. See the SQL Cookbook and other online pages for further information.

gppErrBits atlasSource ATLASDR4 additional WFAU post-processing error bits in G int 4 0 meta.code;em.opt.B

Post-processing error quality bit flags assigned to detections in the archive curation procedure for survey data. From least to most significant byte in the 4-byte integer attribute byte 0 (bits 0 to 7) corresponds to information on generally innocuous conditions that are nonetheless potentially significant as regards the integrity of that detection; byte 1 (bits 8 to 15) corresponds to warnings; byte 2 (bits 16 to 23) corresponds to important warnings; and finally byte 3 (bits 24 to 31) corresponds to severe warnings:

Byte Bit Detection quality issue Threshold or bit mask Applies to

Decimal Hexadecimal

0 4 Deblended 16 0x00000010 All VDFS catalogues

0 6 Bad pixel(s) in default aperture 64 0x00000040 All VDFS catalogues

0 7 Low confidence in default aperture 128 0x00000080 All VDFS catalogues

1 12 Lies within detector 16 region of a tile 4096 0x00001000 All catalogues from tiles

2 16 Close to saturated 65536 0x00010000 All VDFS catalogues

2 17 Photometric calibration probably subject to systematic error 131072 0x00020000 VVV only

2 22 Lies within a dither offset of the stacked frame boundary 4194304 0x00400000 All catalogues

2 23 Lies within the underexposed strip (or "ear") of a tile 8388608 0x00800000 All catalogues from tiles

3 24 Lies within an underexposed region of a tile due to missing detector 16777216 0x01000000 All catalogues from tiles

In this way, the higher the error quality bit flag value, the more likely it is that the detection is spurious. The decimal threshold (column 4) gives the minimum value of the quality flag for a detection having the given condition (since other bits in the flag may be set also; the corresponding hexadecimal value, where each digit corresponds to 4 bits in the flag, can be easier to compute when writing SQL queries to test for a given condition). For example, to exclude all Ks band sources in the VHS having any error quality condition other than informational ones, include a predicate ... AND kppErrBits ≤ 255. See the SQL Cookbook and other online pages for further information.

gppErrBits atlasSource ATLASDR5 additional WFAU post-processing error bits in G int 4 0 meta.code;em.opt.B

Post-processing error quality bit flags assigned to detections in the archive curation procedure for survey data. From least to most significant byte in the 4-byte integer attribute byte 0 (bits 0 to 7) corresponds to information on generally innocuous conditions that are nonetheless potentially significant as regards the integrity of that detection; byte 1 (bits 8 to 15) corresponds to warnings; byte 2 (bits 16 to 23) corresponds to important warnings; and finally byte 3 (bits 24 to 31) corresponds to severe warnings:

Byte Bit Detection quality issue Threshold or bit mask Applies to

Decimal Hexadecimal

0 4 Deblended 16 0x00000010 All VDFS catalogues

0 6 Bad pixel(s) in default aperture 64 0x00000040 All VDFS catalogues

0 7 Low confidence in default aperture 128 0x00000080 All VDFS catalogues

1 12 Lies within detector 16 region of a tile 4096 0x00001000 All catalogues from tiles

2 16 Close to saturated 65536 0x00010000 All VDFS catalogues

2 17 Photometric calibration probably subject to systematic error 131072 0x00020000 VVV only

2 22 Lies within a dither offset of the stacked frame boundary 4194304 0x00400000 All catalogues

2 23 Lies within the underexposed strip (or "ear") of a tile 8388608 0x00800000 All catalogues from tiles

3 24 Lies within an underexposed region of a tile due to missing detector 16777216 0x01000000 All catalogues from tiles

In this way, the higher the error quality bit flag value, the more likely it is that the detection is spurious. The decimal threshold (column 4) gives the minimum value of the quality flag for a detection having the given condition (since other bits in the flag may be set also; the corresponding hexadecimal value, where each digit corresponds to 4 bits in the flag, can be easier to compute when writing SQL queries to test for a given condition). For example, to exclude all Ks band sources in the VHS having any error quality condition other than informational ones, include a predicate ... AND kppErrBits ≤ 255. See the SQL Cookbook and other online pages for further information.

gppErrBits atlasSource ATLASv20131127 additional WFAU post-processing error bits in G int 4 0 meta.code

Post-processing error quality bit flags assigned to detections in the archive curation procedure for survey data. From least to most significant byte in the 4-byte integer attribute byte 0 (bits 0 to 7) corresponds to information on generally innocuous conditions that are nonetheless potentially significant as regards the integrity of that detection; byte 1 (bits 8 to 15) corresponds to warnings; byte 2 (bits 16 to 23) corresponds to important warnings; and finally byte 3 (bits 24 to 31) corresponds to severe warnings:

Byte Bit Detection quality issue Threshold or bit mask Applies to

Decimal Hexadecimal

0 4 Deblended 16 0x00000010 All VDFS catalogues

0 6 Bad pixel(s) in default aperture 64 0x00000040 All VDFS catalogues

0 7 Low confidence in default aperture 128 0x00000080 All VDFS catalogues

1 12 Lies within detector 16 region of a tile 4096 0x00001000 All catalogues from tiles

2 16 Close to saturated 65536 0x00010000 All VDFS catalogues

2 17 Photometric calibration probably subject to systematic error 131072 0x00020000 VVV only

2 22 Lies within a dither offset of the stacked frame boundary 4194304 0x00400000 All catalogues

2 23 Lies within the underexposed strip (or "ear") of a tile 8388608 0x00800000 All catalogues from tiles

3 24 Lies within an underexposed region of a tile due to missing detector 16777216 0x01000000 All catalogues from tiles

In this way, the higher the error quality bit flag value, the more likely it is that the detection is spurious. The decimal threshold (column 4) gives the minimum value of the quality flag for a detection having the given condition (since other bits in the flag may be set also; the corresponding hexadecimal value, where each digit corresponds to 4 bits in the flag, can be easier to compute when writing SQL queries to test for a given condition). For example, to exclude all Ks band sources in the VHS having any error quality condition other than informational ones, include a predicate ... AND kppErrBits ≤ 255. See the SQL Cookbook and other online pages for further information.

gppErrBits atlasSource ATLASv20160425 additional WFAU post-processing error bits in G int 4 0 meta.code;em.opt.B

Post-processing error quality bit flags assigned to detections in the archive curation procedure for survey data. From least to most significant byte in the 4-byte integer attribute byte 0 (bits 0 to 7) corresponds to information on generally innocuous conditions that are nonetheless potentially significant as regards the integrity of that detection; byte 1 (bits 8 to 15) corresponds to warnings; byte 2 (bits 16 to 23) corresponds to important warnings; and finally byte 3 (bits 24 to 31) corresponds to severe warnings:

Byte Bit Detection quality issue Threshold or bit mask Applies to

Decimal Hexadecimal

0 4 Deblended 16 0x00000010 All VDFS catalogues

0 6 Bad pixel(s) in default aperture 64 0x00000040 All VDFS catalogues

0 7 Low confidence in default aperture 128 0x00000080 All VDFS catalogues

1 12 Lies within detector 16 region of a tile 4096 0x00001000 All catalogues from tiles

2 16 Close to saturated 65536 0x00010000 All VDFS catalogues

2 17 Photometric calibration probably subject to systematic error 131072 0x00020000 VVV only

2 22 Lies within a dither offset of the stacked frame boundary 4194304 0x00400000 All catalogues

2 23 Lies within the underexposed strip (or "ear") of a tile 8388608 0x00800000 All catalogues from tiles

3 24 Lies within an underexposed region of a tile due to missing detector 16777216 0x01000000 All catalogues from tiles

In this way, the higher the error quality bit flag value, the more likely it is that the detection is spurious. The decimal threshold (column 4) gives the minimum value of the quality flag for a detection having the given condition (since other bits in the flag may be set also; the corresponding hexadecimal value, where each digit corresponds to 4 bits in the flag, can be easier to compute when writing SQL queries to test for a given condition). For example, to exclude all Ks band sources in the VHS having any error quality condition other than informational ones, include a predicate ... AND kppErrBits ≤ 255. See the SQL Cookbook and other online pages for further information.

gppErrBits atlasSource ATLASv20180209 additional WFAU post-processing error bits in G int 4 0 meta.code;em.opt.B

Post-processing error quality bit flags assigned to detections in the archive curation procedure for survey data. From least to most significant byte in the 4-byte integer attribute byte 0 (bits 0 to 7) corresponds to information on generally innocuous conditions that are nonetheless potentially significant as regards the integrity of that detection; byte 1 (bits 8 to 15) corresponds to warnings; byte 2 (bits 16 to 23) corresponds to important warnings; and finally byte 3 (bits 24 to 31) corresponds to severe warnings:

Byte Bit Detection quality issue Threshold or bit mask Applies to

Decimal Hexadecimal

0 4 Deblended 16 0x00000010 All VDFS catalogues

0 6 Bad pixel(s) in default aperture 64 0x00000040 All VDFS catalogues

0 7 Low confidence in default aperture 128 0x00000080 All VDFS catalogues

1 12 Lies within detector 16 region of a tile 4096 0x00001000 All catalogues from tiles

2 16 Close to saturated 65536 0x00010000 All VDFS catalogues

2 17 Photometric calibration probably subject to systematic error 131072 0x00020000 VVV only

2 22 Lies within a dither offset of the stacked frame boundary 4194304 0x00400000 All catalogues

2 23 Lies within the underexposed strip (or "ear") of a tile 8388608 0x00800000 All catalogues from tiles

3 24 Lies within an underexposed region of a tile due to missing detector 16777216 0x01000000 All catalogues from tiles

In this way, the higher the error quality bit flag value, the more likely it is that the detection is spurious. The decimal threshold (column 4) gives the minimum value of the quality flag for a detection having the given condition (since other bits in the flag may be set also; the corresponding hexadecimal value, where each digit corresponds to 4 bits in the flag, can be easier to compute when writing SQL queries to test for a given condition). For example, to exclude all Ks band sources in the VHS having any error quality condition other than informational ones, include a predicate ... AND kppErrBits ≤ 255. See the SQL Cookbook and other online pages for further information.

gppErrBits vphasSource VPHASDR3 additional WFAU post-processing error bits in G int 4 0 meta.code;em.opt.B

Post-processing error quality bit flags assigned to detections in the archive curation procedure for survey data. From least to most significant byte in the 4-byte integer attribute byte 0 (bits 0 to 7) corresponds to information on generally innocuous conditions that are nonetheless potentially significant as regards the integrity of that detection; byte 1 (bits 8 to 15) corresponds to warnings; byte 2 (bits 16 to 23) corresponds to important warnings; and finally byte 3 (bits 24 to 31) corresponds to severe warnings:

Byte Bit Detection quality issue Threshold or bit mask Applies to

Decimal Hexadecimal

0 4 Deblended 16 0x00000010 All VDFS catalogues

0 6 Bad pixel(s) in default aperture 64 0x00000040 All VDFS catalogues

0 7 Low confidence in default aperture 128 0x00000080 All VDFS catalogues

1 12 Lies within detector 16 region of a tile 4096 0x00001000 All catalogues from tiles

2 16 Close to saturated 65536 0x00010000 All VDFS catalogues

2 17 Photometric calibration probably subject to systematic error 131072 0x00020000 VVV only

2 22 Lies within a dither offset of the stacked frame boundary 4194304 0x00400000 All catalogues

2 23 Lies within the underexposed strip (or "ear") of a tile 8388608 0x00800000 All catalogues from tiles

3 24 Lies within an underexposed region of a tile due to missing detector 16777216 0x01000000 All catalogues from tiles

In this way, the higher the error quality bit flag value, the more likely it is that the detection is spurious. The decimal threshold (column 4) gives the minimum value of the quality flag for a detection having the given condition (since other bits in the flag may be set also; the corresponding hexadecimal value, where each digit corresponds to 4 bits in the flag, can be easier to compute when writing SQL queries to test for a given condition). For example, to exclude all Ks band sources in the VHS having any error quality condition other than informational ones, include a predicate ... AND kppErrBits ≤ 255. See the SQL Cookbook and other online pages for further information.

gppErrBits vphasSource VPHASv20160112 additional WFAU post-processing error bits in G int 4 0 meta.code;em.opt.B

Post-processing error quality bit flags assigned to detections in the archive curation procedure for survey data. From least to most significant byte in the 4-byte integer attribute byte 0 (bits 0 to 7) corresponds to information on generally innocuous conditions that are nonetheless potentially significant as regards the integrity of that detection; byte 1 (bits 8 to 15) corresponds to warnings; byte 2 (bits 16 to 23) corresponds to important warnings; and finally byte 3 (bits 24 to 31) corresponds to severe warnings:

Byte Bit Detection quality issue Threshold or bit mask Applies to

Decimal Hexadecimal

0 4 Deblended 16 0x00000010 All VDFS catalogues

0 6 Bad pixel(s) in default aperture 64 0x00000040 All VDFS catalogues

0 7 Low confidence in default aperture 128 0x00000080 All VDFS catalogues

1 12 Lies within detector 16 region of a tile 4096 0x00001000 All catalogues from tiles

2 16 Close to saturated 65536 0x00010000 All VDFS catalogues

2 17 Photometric calibration probably subject to systematic error 131072 0x00020000 VVV only

2 22 Lies within a dither offset of the stacked frame boundary 4194304 0x00400000 All catalogues

2 23 Lies within the underexposed strip (or "ear") of a tile 8388608 0x00800000 All catalogues from tiles

3 24 Lies within an underexposed region of a tile due to missing detector 16777216 0x01000000 All catalogues from tiles

In this way, the higher the error quality bit flag value, the more likely it is that the detection is spurious. The decimal threshold (column 4) gives the minimum value of the quality flag for a detection having the given condition (since other bits in the flag may be set also; the corresponding hexadecimal value, where each digit corresponds to 4 bits in the flag, can be easier to compute when writing SQL queries to test for a given condition). For example, to exclude all Ks band sources in the VHS having any error quality condition other than informational ones, include a predicate ... AND kppErrBits ≤ 255. See the SQL Cookbook and other online pages for further information.

gppErrBits vphasSource VPHASv20170222 additional WFAU post-processing error bits in G int 4 0 meta.code;em.opt.B

Post-processing error quality bit flags assigned to detections in the archive curation procedure for survey data. From least to most significant byte in the 4-byte integer attribute byte 0 (bits 0 to 7) corresponds to information on generally innocuous conditions that are nonetheless potentially significant as regards the integrity of that detection; byte 1 (bits 8 to 15) corresponds to warnings; byte 2 (bits 16 to 23) corresponds to important warnings; and finally byte 3 (bits 24 to 31) corresponds to severe warnings:

Byte Bit Detection quality issue Threshold or bit mask Applies to

Decimal Hexadecimal

0 4 Deblended 16 0x00000010 All VDFS catalogues

0 6 Bad pixel(s) in default aperture 64 0x00000040 All VDFS catalogues

0 7 Low confidence in default aperture 128 0x00000080 All VDFS catalogues

1 12 Lies within detector 16 region of a tile 4096 0x00001000 All catalogues from tiles

2 16 Close to saturated 65536 0x00010000 All VDFS catalogues

2 17 Photometric calibration probably subject to systematic error 131072 0x00020000 VVV only

2 22 Lies within a dither offset of the stacked frame boundary 4194304 0x00400000 All catalogues

2 23 Lies within the underexposed strip (or "ear") of a tile 8388608 0x00800000 All catalogues from tiles

3 24 Lies within an underexposed region of a tile due to missing detector 16777216 0x01000000 All catalogues from tiles

In this way, the higher the error quality bit flag value, the more likely it is that the detection is spurious. The decimal threshold (column 4) gives the minimum value of the quality flag for a detection having the given condition (since other bits in the flag may be set also; the corresponding hexadecimal value, where each digit corresponds to 4 bits in the flag, can be easier to compute when writing SQL queries to test for a given condition). For example, to exclude all Ks band sources in the VHS having any error quality condition other than informational ones, include a predicate ... AND kppErrBits ≤ 255. See the SQL Cookbook and other online pages for further information.

gPsfMag atlasSource ATLASDR1 Point source profile-fitted G mag real 4 mag -0.9999995e9 phot.mag

gPsfMag atlasSource ATLASDR2 Point source profile-fitted G mag real 4 mag -0.9999995e9 phot.mag

gPsfMag atlasSource ATLASDR3 Point source profile-fitted G mag real 4 mag -0.9999995e9 phot.mag;em.opt.B

gPsfMag atlasSource ATLASv20131127 Point source profile-fitted G mag real 4 mag -0.9999995e9 phot.mag

gPsfMag atlasSource ATLASv20160425 Point source profile-fitted G mag real 4 mag -0.9999995e9 phot.mag;em.opt.B

gPsfMag vphasSource VPHASDR3 Point source profile-fitted G mag real 4 mag -0.9999995e9 phot.mag;em.opt.B

gPsfMag vphasSource VPHASv20160112 Point source profile-fitted G mag real 4 mag -0.9999995e9 phot.mag;em.opt.B

gPsfMag vphasSource VPHASv20170222 Point source profile-fitted G mag real 4 mag -0.9999995e9 phot.mag;em.opt.B

gPsfMagErr atlasSource ATLASDR1 Error in point source profile-fitted G mag real 4 mag -0.9999995e9 stat.error

gPsfMagErr atlasSource ATLASDR2 Error in point source profile-fitted G mag real 4 mag -0.9999995e9 stat.error

gPsfMagErr atlasSource ATLASDR3 Error in point source profile-fitted G mag real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gPsfMagErr atlasSource ATLASv20131127 Error in point source profile-fitted G mag real 4 mag -0.9999995e9 stat.error

gPsfMagErr atlasSource ATLASv20160425 Error in point source profile-fitted G mag real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gPsfMagErr vphasSource VPHASDR3 Error in point source profile-fitted G mag real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gPsfMagErr vphasSource VPHASv20160112 Error in point source profile-fitted G mag real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gPsfMagErr vphasSource VPHASv20170222 Error in point source profile-fitted G mag real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gsc2Class first08Jul16Source FIRST morphological classification in GSC-2 version 2.3.2 (s=stellar, g=nonstellar/galaxy) varchar 1

gsc2Mag first08Jul16Source FIRST GSC2 F magnitude real 4 mag

gsc2Matches first08Jul16Source FIRST number of matches within a fiducial radius (10 arcsec) with GSC-2 version 2.3.2 int 4

gsc2Sep first08Jul16Source FIRST separation of the nearest match in GSC-2 version 2.3.2 from the FIRST position real 4 arcsec

gSeqNum atlasSource ATLASDR1 the running number of the G detection int 4 -99999999 meta.id

gSeqNum atlasSource ATLASDR2 the running number of the G detection int 4 -99999999 meta.id

gSeqNum atlasSource ATLASDR3 the running number of the G detection int 4 -99999999 meta.number;em.opt.B

gSeqNum atlasSource ATLASDR4 the running number of the G detection int 4 -99999999 meta.number;em.opt.B

gSeqNum atlasSource ATLASDR5 the running number of the G detection int 4 -99999999 meta.id;em.opt.B

gSeqNum atlasSource ATLASv20131127 the running number of the G detection int 4 -99999999 meta.id

gSeqNum atlasSource ATLASv20160425 the running number of the G detection int 4 -99999999 meta.number;em.opt.B

gSeqNum atlasSource ATLASv20180209 the running number of the G detection int 4 -99999999 meta.number;em.opt.B

gSeqNum vphasSource VPHASDR3 the running number of the G detection int 4 -99999999 meta.number;em.opt.B

gSeqNum vphasSource VPHASv20160112 the running number of the G detection int 4 -99999999 meta.number;em.opt.B

gSeqNum vphasSource VPHASv20170222 the running number of the G detection int 4 -99999999 meta.number;em.opt.B

gSerMag2D atlasSource ATLASDR1 Extended source G mag (profile-fitted) real 4 mag -0.9999995e9 phot.mag

gSerMag2D atlasSource ATLASDR2 Extended source G mag (profile-fitted) real 4 mag -0.9999995e9 phot.mag

gSerMag2D atlasSource ATLASDR3 Extended source G mag (profile-fitted) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gSerMag2D atlasSource ATLASv20131127 Extended source G mag (profile-fitted) real 4 mag -0.9999995e9 phot.mag

gSerMag2D atlasSource ATLASv20160425 Extended source G mag (profile-fitted) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gSerMag2D vphasSource VPHASDR3 Extended source G mag (profile-fitted) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gSerMag2D vphasSource VPHASv20160112 Extended source G mag (profile-fitted) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gSerMag2D vphasSource VPHASv20170222 Extended source G mag (profile-fitted) real 4 mag -0.9999995e9 phot.mag;em.opt.B

gSerMag2DErr atlasSource ATLASDR1 Error in extended source G mag (profile-fitted) real 4 mag -0.9999995e9 stat.error

gSerMag2DErr atlasSource ATLASDR2 Error in extended source G mag (profile-fitted) real 4 mag -0.9999995e9 stat.error

gSerMag2DErr atlasSource ATLASDR3 Error in extended source G mag (profile-fitted) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gSerMag2DErr atlasSource ATLASv20131127 Error in extended source G mag (profile-fitted) real 4 mag -0.9999995e9 stat.error

gSerMag2DErr atlasSource ATLASv20160425 Error in extended source G mag (profile-fitted) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gSerMag2DErr vphasSource VPHASDR3 Error in extended source G mag (profile-fitted) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gSerMag2DErr vphasSource VPHASv20160112 Error in extended source G mag (profile-fitted) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gSerMag2DErr vphasSource VPHASv20170222 Error in extended source G mag (profile-fitted) real 4 mag -0.9999995e9 stat.error;phot.mag;em.opt.B

gXi atlasSource ATLASDR1 Offset of G detection from master position (+east/-west) real 4 arcsec -0.9999995e9 pos.eq.ra;arith.diff

When associating individual passband detections into merged sources, a generous (in terms of the positional uncertainties) pairing radius of 1.0 arcseconds is used. Such a large association criterion can of course lead to spurious pairings in the merged sources lists (although note that between passband pairs, handshake pairing is done: both passbands must agree that the candidate pair is their nearest neighbour for the pair to propagate through into the merged source table). In order to help filter spurious pairings out, and assuming that large positional offsets between the different passband detections are not expected (e.g. because of source motion, or larger than usual positional uncertainties) then the attributes Xi and Eta can be used to filter any pairings with suspiciously large offsets in one or more bands. For example, for a clean sample of QSOs from the VHS, you might wish to insist that the offsets in the selected sample are all below 0.5 arcsecond: simply add WHERE clauses into the SQL sample selection script to exclude all Xi and Eta values larger than the threshold you want. NB: the master position is the position of the detection in the shortest passband in the set, rather than the ra/dec of the source as stored in source attributes of the same name. The former is used in the pairing process, while the latter is generally the optimally weighted mean position from an astrometric solution or other combinatorial process of all individual detection positions across the available passbands.

gXi atlasSource ATLASDR2 Offset of G detection from master position (+east/-west) real 4 arcsec -0.9999995e9 pos.eq.ra;arith.diff

When associating individual passband detections into merged sources, a generous (in terms of the positional uncertainties) pairing radius of 1.0 arcseconds is used. Such a large association criterion can of course lead to spurious pairings in the merged sources lists (although note that between passband pairs, handshake pairing is done: both passbands must agree that the candidate pair is their nearest neighbour for the pair to propagate through into the merged source table). In order to help filter spurious pairings out, and assuming that large positional offsets between the different passband detections are not expected (e.g. because of source motion, or larger than usual positional uncertainties) then the attributes Xi and Eta can be used to filter any pairings with suspiciously large offsets in one or more bands. For example, for a clean sample of QSOs from the VHS, you might wish to insist that the offsets in the selected sample are all below 0.5 arcsecond: simply add WHERE clauses into the SQL sample selection script to exclude all Xi and Eta values larger than the threshold you want. NB: the master position is the position of the detection in the shortest passband in the set, rather than the ra/dec of the source as stored in source attributes of the same name. The former is used in the pairing process, while the latter is generally the optimally weighted mean position from an astrometric solution or other combinatorial process of all individual detection positions across the available passbands.

gXi atlasSource ATLASDR3 Offset of G detection from master position (+east/-west) real 4 arcsec -0.9999995e9 pos.eq.ra;arith.diff;em.opt.B

When associating individual passband detections into merged sources, a generous (in terms of the positional uncertainties) pairing radius of 1.0 arcseconds is used. Such a large association criterion can of course lead to spurious pairings in the merged sources lists (although note that between passband pairs, handshake pairing is done: both passbands must agree that the candidate pair is their nearest neighbour for the pair to propagate through into the merged source table). In order to help filter spurious pairings out, and assuming that large positional offsets between the different passband detections are not expected (e.g. because of source motion, or larger than usual positional uncertainties) then the attributes Xi and Eta can be used to filter any pairings with suspiciously large offsets in one or more bands. For example, for a clean sample of QSOs from the VHS, you might wish to insist that the offsets in the selected sample are all below 0.5 arcsecond: simply add WHERE clauses into the SQL sample selection script to exclude all Xi and Eta values larger than the threshold you want. NB: the master position is the position of the detection in the shortest passband in the set, rather than the ra/dec of the source as stored in source attributes of the same name. The former is used in the pairing process, while the latter is generally the optimally weighted mean position from an astrometric solution or other combinatorial process of all individual detection positions across the available passbands.

gXi atlasSource ATLASDR4 Offset of G detection from master position (+east/-west) real 4 arcsec -0.9999995e9 pos.eq.ra;arith.diff;em.opt.B

When associating individual passband detections into merged sources, a generous (in terms of the positional uncertainties) pairing radius of 1.0 arcseconds is used. Such a large association criterion can of course lead to spurious pairings in the merged sources lists (although note that between passband pairs, handshake pairing is done: both passbands must agree that the candidate pair is their nearest neighbour for the pair to propagate through into the merged source table). In order to help filter spurious pairings out, and assuming that large positional offsets between the different passband detections are not expected (e.g. because of source motion, or larger than usual positional uncertainties) then the attributes Xi and Eta can be used to filter any pairings with suspiciously large offsets in one or more bands. For example, for a clean sample of QSOs from the VHS, you might wish to insist that the offsets in the selected sample are all below 0.5 arcsecond: simply add WHERE clauses into the SQL sample selection script to exclude all Xi and Eta values larger than the threshold you want. NB: the master position is the position of the detection in the shortest passband in the set, rather than the ra/dec of the source as stored in source attributes of the same name. The former is used in the pairing process, while the latter is generally the optimally weighted mean position from an astrometric solution or other combinatorial process of all individual detection positions across the available passbands.

gXi atlasSource ATLASDR5 Offset of G detection from master position (+east/-west) real 4 arcsec -0.9999995e9 pos.eq.ra;arith.diff;em.opt.B

When associating individual passband detections into merged sources, a generous (in terms of the positional uncertainties) pairing radius of 1.0 arcseconds is used. Such a large association criterion can of course lead to spurious pairings in the merged sources lists (although note that between passband pairs, handshake pairing is done: both passbands must agree that the candidate pair is their nearest neighbour for the pair to propagate through into the merged source table). In order to help filter spurious pairings out, and assuming that large positional offsets between the different passband detections are not expected (e.g. because of source motion, or larger than usual positional uncertainties) then the attributes Xi and Eta can be used to filter any pairings with suspiciously large offsets in one or more bands. For example, for a clean sample of QSOs from the VHS, you might wish to insist that the offsets in the selected sample are all below 0.5 arcsecond: simply add WHERE clauses into the SQL sample selection script to exclude all Xi and Eta values larger than the threshold you want. NB: the master position is the position of the detection in the shortest passband in the set, rather than the ra/dec of the source as stored in source attributes of the same name. The former is used in the pairing process, while the latter is generally the optimally weighted mean position from an astrometric solution or other combinatorial process of all individual detection positions across the available passbands.

gXi atlasSource ATLASv20131127 Offset of G detection from master position (+east/-west) real 4 arcsec -0.9999995e9 pos.eq.ra;arith.diff

When associating individual passband detections into merged sources, a generous (in terms of the positional uncertainties) pairing radius of 1.0 arcseconds is used. Such a large association criterion can of course lead to spurious pairings in the merged sources lists (although note that between passband pairs, handshake pairing is done: both passbands must agree that the candidate pair is their nearest neighbour for the pair to propagate through into the merged source table). In order to help filter spurious pairings out, and assuming that large positional offsets between the different passband detections are not expected (e.g. because of source motion, or larger than usual positional uncertainties) then the attributes Xi and Eta can be used to filter any pairings with suspiciously large offsets in one or more bands. For example, for a clean sample of QSOs from the VHS, you might wish to insist that the offsets in the selected sample are all below 0.5 arcsecond: simply add WHERE clauses into the SQL sample selection script to exclude all Xi and Eta values larger than the threshold you want. NB: the master position is the position of the detection in the shortest passband in the set, rather than the ra/dec of the source as stored in source attributes of the same name. The former is used in the pairing process, while the latter is generally the optimally weighted mean position from an astrometric solution or other combinatorial process of all individual detection positions across the available passbands.

gXi atlasSource ATLASv20160425 Offset of G detection from master position (+east/-west) real 4 arcsec -0.9999995e9 pos.eq.ra;arith.diff;em.opt.B

When associating individual passband detections into merged sources, a generous (in terms of the positional uncertainties) pairing radius of 1.0 arcseconds is used. Such a large association criterion can of course lead to spurious pairings in the merged sources lists (although note that between passband pairs, handshake pairing is done: both passbands must agree that the candidate pair is their nearest neighbour for the pair to propagate through into the merged source table). In order to help filter spurious pairings out, and assuming that large positional offsets between the different passband detections are not expected (e.g. because of source motion, or larger than usual positional uncertainties) then the attributes Xi and Eta can be used to filter any pairings with suspiciously large offsets in one or more bands. For example, for a clean sample of QSOs from the VHS, you might wish to insist that the offsets in the selected sample are all below 0.5 arcsecond: simply add WHERE clauses into the SQL sample selection script to exclude all Xi and Eta values larger than the threshold you want. NB: the master position is the position of the detection in the shortest passband in the set, rather than the ra/dec of the source as stored in source attributes of the same name. The former is used in the pairing process, while the latter is generally the optimally weighted mean position from an astrometric solution or other combinatorial process of all individual detection positions across the available passbands.

gXi atlasSource ATLASv20180209 Offset of G detection from master position (+east/-west) real 4 arcsec -0.9999995e9 pos.eq.ra;arith.diff;em.opt.B

When associating individual passband detections into merged sources, a generous (in terms of the positional uncertainties) pairing radius of 1.0 arcseconds is used. Such a large association criterion can of course lead to spurious pairings in the merged sources lists (although note that between passband pairs, handshake pairing is done: both passbands must agree that the candidate pair is their nearest neighbour for the pair to propagate through into the merged source table). In order to help filter spurious pairings out, and assuming that large positional offsets between the different passband detections are not expected (e.g. because of source motion, or larger than usual positional uncertainties) then the attributes Xi and Eta can be used to filter any pairings with suspiciously large offsets in one or more bands. For example, for a clean sample of QSOs from the VHS, you might wish to insist that the offsets in the selected sample are all below 0.5 arcsecond: simply add WHERE clauses into the SQL sample selection script to exclude all Xi and Eta values larger than the threshold you want. NB: the master position is the position of the detection in the shortest passband in the set, rather than the ra/dec of the source as stored in source attributes of the same name. The former is used in the pairing process, while the latter is generally the optimally weighted mean position from an astrometric solution or other combinatorial process of all individual detection positions across the available passbands.

gXi vphasSource VPHASDR3 Offset of G detection from master position (+east/-west) real 4 arcsec -0.9999995e9 pos.eq.ra;arith.diff;em.opt.B

When associating individual passband detections into merged sources, a generous (in terms of the positional uncertainties) pairing radius of 1.0 arcseconds is used. Such a large association criterion can of course lead to spurious pairings in the merged sources lists (although note that between passband pairs, handshake pairing is done: both passbands must agree that the candidate pair is their nearest neighbour for the pair to propagate through into the merged source table). In order to help filter spurious pairings out, and assuming that large positional offsets between the different passband detections are not expected (e.g. because of source motion, or larger than usual positional uncertainties) then the attributes Xi and Eta can be used to filter any pairings with suspiciously large offsets in one or more bands. For example, for a clean sample of QSOs from the VHS, you might wish to insist that the offsets in the selected sample are all below 0.5 arcsecond: simply add WHERE clauses into the SQL sample selection script to exclude all Xi and Eta values larger than the threshold you want. NB: the master position is the position of the detection in the shortest passband in the set, rather than the ra/dec of the source as stored in source attributes of the same name. The former is used in the pairing process, while the latter is generally the optimally weighted mean position from an astrometric solution or other combinatorial process of all individual detection positions across the available passbands.

gXi vphasSource VPHASv20160112 Offset of G detection from master position (+east/-west) real 4 arcsec -0.9999995e9 pos.eq.ra;arith.diff;em.opt.B

When associating individual passband detections into merged sources, a generous (in terms of the positional uncertainties) pairing radius of 1.0 arcseconds is used. Such a large association criterion can of course lead to spurious pairings in the merged sources lists (although note that between passband pairs, handshake pairing is done: both passbands must agree that the candidate pair is their nearest neighbour for the pair to propagate through into the merged source table). In order to help filter spurious pairings out, and assuming that large positional offsets between the different passband detections are not expected (e.g. because of source motion, or larger than usual positional uncertainties) then the attributes Xi and Eta can be used to filter any pairings with suspiciously large offsets in one or more bands. For example, for a clean sample of QSOs from the VHS, you might wish to insist that the offsets in the selected sample are all below 0.5 arcsecond: simply add WHERE clauses into the SQL sample selection script to exclude all Xi and Eta values larger than the threshold you want. NB: the master position is the position of the detection in the shortest passband in the set, rather than the ra/dec of the source as stored in source attributes of the same name. The former is used in the pairing process, while the latter is generally the optimally weighted mean position from an astrometric solution or other combinatorial process of all individual detection positions across the available passbands.

gXi vphasSource VPHASv20170222 Offset of G detection from master position (+east/-west) real 4 arcsec -0.9999995e9 pos.eq.ra;arith.diff;em.opt.B

When associating individual passband detections into merged sources, a generous (in terms of the positional uncertainties) pairing radius of 1.0 arcseconds is used. Such a large association criterion can of course lead to spurious pairings in the merged sources lists (although note that between passband pairs, handshake pairing is done: both passbands must agree that the candidate pair is their nearest neighbour for the pair to propagate through into the merged source table). In order to help filter spurious pairings out, and assuming that large positional offsets between the different passband detections are not expected (e.g. because of source motion, or larger than usual positional uncertainties) then the attributes Xi and Eta can be used to filter any pairings with suspiciously large offsets in one or more bands. For example, for a clean sample of QSOs from the VHS, you might wish to insist that the offsets in the selected sample are all below 0.5 arcsecond: simply add WHERE clauses into the SQL sample selection script to exclude all Xi and Eta values larger than the threshold you want. NB: the master position is the position of the detection in the shortest passband in the set, rather than the ra/dec of the source as stored in source attributes of the same name. The former is used in the pairing process, while the latter is generally the optimally weighted mean position from an astrometric solution or other combinatorial process of all individual detection positions across the available passbands.

WFAU, Institute for Astronomy,
Royal Observatory, Blackford Hill
Edinburgh, EH9 3HJ, UK

osa-support@roe.ac.uk
27/06/2023