NAME:
  rdphot3
 PURPOSE: (one line)
  Reads photometry from a reduced photometry file (see WRPHOT)
 DESCRIPTION:
 CATEGORY:
  File I/O
 CALLING SEQUENCE:
  rdphot3,filename,jd,fil,mag,err,bad
 INPUTS:
  filename - string containing the photometry log file to read from.
 OPTIONAL INPUT PARAMETERS:
 KEYWORD PARAMETERS:
 OUTPUTS:
  jd       - Julian date at mid-time of observation
  fil      - Filter code for observation
  mag      - Magnitude
  err      - Uncertainty on the magnitude
  bad      - Flag 0=good, 1=bad
 COMMON BLOCKS:
 SIDE EFFECTS:
 RESTRICTIONS:
 PROCEDURE:
 MODIFICATION HISTORY:
  11/3/96 - Written by Marc W. Buie