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 The FIRST Survey Catalog, Version 2014Dec17 (Helfand+ 2015) See also the WFIRST description and coverage maps izContentimage/fits izContentimage/gif
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1.VIII/92/first14The FIRST survey catalog, 14Dec17 Version (946432 rows)
The column gBluef FIRST provides a link to the FIRST cutout image server em(see also the Wdoc original FIRST search engine)

Query by Constraints constraints help applied on Columns (Output Order: + - )
ShowSortColumn  Constraint Explain   (UCD)
  recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
  FIRST (char) FIRST Source designation (1) {em( g{blue}clicking on the name asks the FIRST Cutout Server to deliver an image of 4'x4' centered on the source}) (Note)   (;meta.main)
  FITS  Get a fully WCS-qualified FITS image of the target (meta.ref.url)
  RAJ2000 "h:m:s" Right Ascension J2000 (Note 2)   (pos.eq.ra;meta.main)
  DEJ2000 "d:m:s" Declination J2000 (Note 2)   (pos.eq.dec;meta.main)
  p(S)   [0,1] Probability of being a side lobe (Note 3)   (
  Fpeak mJy Peak flux density at 1.4GHz (Note 4)   (phot.flux.density;
  Fint mJy Integrated flux density at 1.4GHz (Note 4)   (phot.flux.density;
  Rms mJy Local noise estimate (Note 5)   (stat.stdev;instr.det.noise)
  Maj arcsec Major axis (FWHM) (Note 6)   (phys.angSize)
  Min arcsec Minor axis (FWHM) (Note 6)   (phys.angSize)

ALL cols
  PA deg [0/180] Position angle (Note 6)   (pos.posAng)
  fMaj arcsec Fitted major axis before deconvolution (Note 7)   (phys.angSize;meta.modelled)
  fMin arcsec Fitted minor axis before deconvolution (Note 7)   (phys.angSize;meta.modelled)
  fPA deg [0/180] Fitted PA before deconvolution (Note 7)   (pos.posAng;meta.modelled)
  Field (char) Name of the coadded image containing the source (Note 8)   (obs.image)
  N1  (n) [0/10] Number of SDSS-DR10 counterparts (Note 9)   (obs.image)
  r1 arcsec (n) [0/8] Closest SDSS match (Note 9)   (pos;arith.diff)
  m1 mag (n) SDSS i magnitude of closest SDSS match (Note 9)   (phot.mag;em.opt.I)
  c1 (char) [sg-] SDSS class: s=star, g=galaxy (src.class.starGalaxy)
  N2  Number of 2MASS counterparts (Note 10)   (obs.image)
  r2 arcsec (n) [0/8] Closest 2MASS match (Note 10)   (pos;arith.diff)
  m2 mag (n) 2MASS Ks mag. of closest 2MASS match (Note 10)   (phot.mag;em.IR.K)
  Ep yr Mean epoch of the FIRST flux density (Note 11)   (time.epoch)
  Ep(JD) d Mean epoch in Julian Day (Note 11)   (time.epoch)
  s_Ep(JD) d Epoch rms (Note 11)   (time.epoch)

ALL cols
(n) indicates a possible blank or NULL column  
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