Has anyone out there taken any images of a binary star system (of known separation and position angle) with GRIM? I am interested in experimentally verifying the quoted image scale, particularly that of the f/10 system (0.234 arcsec/pix). Please let me know if you have any data that would be useful in this regard. Thanks, Nancy Chanover APO APO APO APO APO Apache Point Observatory 3.5m APO APO APO APO APO This is message 18 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