For a short period of time tonight I had 0.5 to 0.6 arcsec FWHM seeing with the APO 3.5m. I believe this is the best seeing that has been seen. The instrument was GRIM II with the f/20 camera, so the seeing was well sampled. The exposures were 5 seconds long in J, H, and Ks and were taken near the zenith. Ah, you're saying, this idiot screwed up and really had 1.0 to 1.2 arcsec FWHM seeing with the f/10 camera. Well, no: I was taking images of an astrometrically calibrated field in M67 to check the plate scale, so I can independently confirm that I was using the f/20 camera. The images match my previous experience of good seeing images in short exposures: they have a tight core with irregular wings. If anyone is interested, the images are in ftp://oldp.nmsu.edu/pub/alan/970129/. The first pair are in J, the second pair in H, and the third pair in Ks. I think this is very encouraging news! Alan Watson APO APO APO APO APO Apache Point Observatory 3.5m APO APO APO APO APO This is message 120 in the apo35-general archive. You can find APO the archive on http://www.astro.princeton.edu/APO/apo35-general/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-general@astro.princeton.edu APO APO APO APO APO APO APO APO APO APO APO APO APO APO APO APO APO