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  I/254
 The HST Guide Star Catalog, Version 1.2 (Lasker+ 1996)
Post annotation
img(gal)
1.I/254/outThe Full Catalogue (25241730 positions) (25241730 rows)
inputVizgsc1.2.intro.htx

 
Query by Constraints constraints help applied on Columns (Output Order: + - )
ShowSortColumn  Constraint Explain   (UCD)
  GSC  GSC designation (Note)   (meta.id;meta.main)
  RAJ2000 deg Right ascension in J2000, epoch of plate (pos.eq.ra;meta.main)
  DEJ2000 deg Declination in J2000, epoch of plate (pos.eq.dec;meta.main)
  PosErr arcsec Mean error on position (stat.error)
  Pmag mag photographic magnitude (see n_Pmag) (phot.mag;em.opt)
  e_Pmag mag Mean error on photographic magnitude (stat.error;phot.mag;em.opt.U)
  n_Pmag   [0,18] Coded passband for magnitude (Note)   (meta.note)
  Class   [0,3] Class of object (0=star; 3=non-stellar) (src.class)
  Plate (char) Plate designation (Note)   (obs.field)
  Epoch yr (n) Epoch of plate (Note)   (time.epoch)
  Mult (char) [TF] True if multiple object / False otherwise (meta.code.multip)
  Versions  Get parameters of that star from all GSC versions (meta.ref.url)

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