ASTRMFIX

       Calculate a rough HST WFPC or FOC astrometry solution

       This program will calculate a rough HST WFPC or FOC astrometry solution
       using the keyword PSANGLEV3 which gives the angle of the V3 axis of
       HST.    Called by WFPCREAD.

       AstrmFix, hdr, chip

       hdr - FITS header (string array) from either WFPC or FOC.   Header will
               be updated with rough astrometry

       chip - Scalar (typically 0-3) giving the WFPC chip to read.

       EXTAST, SXPAR(), SXADDPAR

       ??-???-???? Written by Eric W. Deutsch
       22-OCT-1992 Changed all calculations to double precision. (E. Deutsch)
       22-OCT-1992 Updated PC Pixel size of 0.04389 from WFPC IDT OV/SV manual(EWD)
       22-OCT-1992 Updated WF Pixel size of 0.1016 from WFPC IDT OV/SV manual(EWD)
       11-JAN-1993 Added warning message and changed CD001001... to CD1_1... (EWD)
       Converted to IDL V5.0   W. Landsman   September 1997
       Remove calls to obsolete !ERR variable  W. Landsman   December 2000

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