SCRIPT TO OFFSET A CELESTIAL COORDINATE PAIR.

     1: To offset the CRVAL keywords in a FITS image:

  Usage: offsetcoord fitsfile+ext ra_off dec_off 

              or,
 
     2: To offset a coordinate pair, and write result to the screen:

  Usage: offsetcoord ra_old dec_old ra_off dec_off 

    where, "ra_off/dec_off" are RA/DEC offsets in arcmins,
      and, "ra_old/dec_old" are RA/DEC in degrees.

    The offsets are simply added (i.e., ra_new = ra_old + offset / 60.0)

 For futher details and a list of ASCA offsets, see ASCAGOF web page:

       http://lheawww.gsfc.nasa.gov/users/evg/updatecoord.html