We want to archive and analyze DIS calibration images to monitor performance and create reference calibration files. These data will be used to find both long-term and sudden performance changes and can be used to predict the effects of our proposed improvements. This database might also provide calibration files for your comparison or use. We need your help to do this. We're asking DIS observers to send calibration files: bias frames, flat fields, and standard stars in photometric conditions are wanted. In spectroscopic mode, standards taken through a wide slit and their related discharge lamps are needed. Any date, from the oldest to last night's are useful. We prefer a compressed (gzip or compress) tar file of a directory filled with calibration files. An ascii "Notes" file with filter information (what do the FILTER1 and FILTER2 mean?), and a table of [filename,object] will also be needed (also include any comments you think might be helpful). Suppose 961225Hubble is the directory containing your files (961225 is December 25, 1996 and your name is Hubble). To make a tar file of this directory, use the command tar cf 961225Hubble.tar ./961225Hubble from the directory containing 961225Hubble. Then gzip or compress 961225Hubble.tar. You can deliver the file to the machine named au.pha.jhu.edu (anon ftp and cd to the incoming directory) or send email to au@jhu.edu telling me where I can pick it up. (If you're reading this after about May 1, 1997, check newer postings for an updated ftp drop site. By then we should have a new disk drive and a student working on the analysis.) If doing the work above prevents you from sending data, you can pack up an entire night's directory and send it; we'll sort out the calibration files and discard the science observations. (But we'd really prefer not to do this.) Thanks! Alan Uomoto February 25, 1997 APO APO APO APO APO Apache Point Observatory 3.5m APO APO APO APO APO This is message 129 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