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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)
The Guide Star Catalog has been constructed to support the operational need of the Hubble Space Telescope. It contains over 25 million positions for about 19 million objects, of which more than 15 million are classified as stars. The version 1.2 is a new astrometric reduction which results in absolute position errors about 0.3-0.4 arcsec. (see GSC pages at URL http://www-gsss.stsci.edu/gsc/gsc.html)

 
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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(n) indicates a possible blank or NULL column  
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The following problems were encountered in this VizieR run:
**** -bg is an obsolete option
**** -bg is an obsolete option
**** -bg is an obsolete option
If you can't find a solution, report to CDS and insert into your message the following details:

.errorfile=/tmp/VR37571.err (2014-10-24T23:04:46)
-2
-source=I/254
-ref=VIZ544adb0e92c3
elapse time 0

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