During the recent shutdown for repair of the Az drive, the electronics needed to simultaneously read-out the two DIS chips was installed; this can save a substantial overhead for programs acquiring a large number of short exposures with DIS, of course. Observers should consult their on-duty OS about how to use this new DIS feature until it is described in the instrument documentation. Ed Turner APO APO APO APO APO Apache Point Observatory 3.5m APO APO APO APO APO This is message 639 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