For those of us who write images in fits format: Half way thru my obsering runs I have had the chilling experience of being told that my images are saturated despite the fact that the counts look all right on my computer. The problem is that when reading fits images with iraf while the image type is set to hhh, one needs to use strfits instead of rfits. If one doesn't have strfits (which is part of the STSDAS package) one should change the imtype to imh (iraf> set imtype=imh) and then use rfits. But here one must be careful in changing the imtype in the middle of the observations. Make sure the directory imdir has been defined and actually exists (iraf>show imdir) and change back to hhh (iraf> set imtype=imh). Hope this helps, Marianne APO APO APO APO APO Apache Point Observatory 3.5m APO APO APO APO APO This is message 40 in the apo35-grim archive. You can find APO the archive on http://www.astro.princeton.edu/APO/apo35-grim/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-grim@astro.princeton.edu APO APO APO APO APO APO APO APO APO APO APO APO APO APO APO APO APO