I believe that every *byte* in the FITS data had its high bit flipped. You can safely unflip the 7th (256) bit of every pixel. I've updated the mc with a version that only flips the 15th (32768) bit, but to be safe, tonight's data should probably be read in non-FITS format. - craig At 5:59 PM -0600 5/7/98, Chris Stubbs wrote: >another thought: > >Could this be related to the change in the MC that set bscale and bzero, >recently? > >c. APO APO APO APO APO Apache Point Observatory 3.5m APO APO APO APO APO This is message 56 in the apo35-dis archive. You can find APO the archive on http://www.astro.princeton.edu/APO/apo35-dis/INDEX.html APO To join/leave the list, send mail to apo35-request@astro.princeton.edu APO To post a message, mail it to apo35-dis@astro.princeton.edu APO APO APO APO APO APO APO APO APO APO APO APO APO APO APO APO APO