CatName_first This is the object catalogue from the FIRST survey at the VLA. TabName_catalogue ColName_POS_EQ_RA ColName_POS_EQ_DEC ColName_POS_EQ_RA double Right ascension deg POS_EQ_RA_MAIN pos.eq.ra;meta.main RA ColName_POS_EQ_DEC double Declination deg POS_EQ_DEC_MAIN pos.eq.dec;meta.main DEC ColName_CODE_QUALITY char Quality flag; non-null => possible artefact from sidelobes CODE_QUALITY meta.code.qual ColName_PHOT_FLUX_PEAK double Peak flux-density of object mJy PHOT_FLUX_RADIO_1.4G phot.flux;em.radio.750-1500MHz ColName_PHOT_FLUX_INT double Integrated flux-density of object mJy PHOT_FLUX_RADIO_1.4G phot.flux;em.radio.750-1500MHz ColName_PHOT_FLUX_ERROR double Uncertainty in flux-density of object mJy ERROR stat.error;phot.flux ColName_EXTENSION_FWHM_MAJ double Extent of major axis of object, FWHM (after beam deconvolution). arcsec EXTENSION_FWHM_MAJ src.fwhm;src.morph.param;meta.main ColName_EXTENSION_FWHM_MIN double Extent of minor axis of object, FWHM (after beam deconvolution). arcsec EXTENSION_FWHM_MIN src.fwhm;src.morph.param;meta.main ColName_POS_POSANG double Position angle of major axis of source (after beam deconvolution). deg POS_POSANG pos.posAng;src.morph.param;meta.main ColName_EXTENSION_FWHM_MAJ_FIT double Extent of major axis of object, FWHM (before beam deconvolution). arcsec EXTENSION_FWHM_MAJ src.fwhm;src.morph.param;meta.main ColName_EXTENSION_FWHM_MIN_FIT double Extent of minor axis of object, FWHM (before beam deconvolution). arcsec EXTENSION_FWHM_MIN src.fwhm;src.morph.param ColName_POS_POSANG_FIT double Position angle of major axis of source (before beam deconvolution). deg POS_POSANG pos.posAng;src.morph.param ColName_ID_FIELD string Name of field in which the object was observed. ID_MAIN meta.id;obs.field