NAME:
  rdast
 PURPOSE:
  Read final astrometry data file.
 DESCRIPTION:

 CATEGORY:
  File I/O
 CALLING SEQUENCE:
  rdast,file,fn,jd,ra,dec,mag,obs,id
 INPUTS:
  file - Astrometry data file to be read.
 OPTIONAL INPUT PARAMETERS:

 KEYWORD INPUT PARAMETERS:

 OUTPUTS:
  fn  - Original filename for measurement
  jd  - Julian date of measurement
  ra  - Right Ascension (radians)
  dec - Declination (radians)
  mag - measured magnitude
  obs - Observatory code (string)
  id  - Name of object
  nobs- Total number of observations (0 if file is empty or missing).

 KEYWORD OUTPUT PARAMETERS:

 COMMON BLOCKS:

 SIDE EFFECTS:

 RESTRICTIONS:

 PROCEDURE:

 MODIFICATION HISTORY:
  98/03/26, Written by Marc W. Buie, Lowell Observatory
  2002/09/09, MWB, added support for string obscode values