We have just finished our analysis of the data we took during the second half of Thursday night. The full text is available from: ftp://oldp.nmsu.edu/pub/alan/apo/970203.ps.Z The abstract is: We have measured the throughputs of the APO 3.5m after the recent realuminization of the primary, secondary, and tertiary mirrors. We used DIS and GRIM~II to make measurements from 3500\AA\ to 2.5 micron. The throughout has increased at all wavelengths and the improvement is most spectacular in the blue. At 4000\AA\ the improvement is a factor of 3.7, at 4800\AA\ a factor of 2.7, at 6000\AA\ a factor of 2.1, and between 8000\AA\ and 1.6 micron a factor of 1.4, and at 2 micron a factor of 1.3. Other than the known UV problem with DIS, the throughput of the telescope and instruments appears to be excellent. The telescope mirror reflectivities are estimated to be about 0.93 in the blue, 0.86 in the red, and 0.95 in the near infrared. This is good news. Regards, Mike Ledlow & Alan Watson APO APO APO APO APO Apache Point Observatory 3.5m APO APO APO APO APO This is message 122 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