Date: Fri, 24 Oct 1997 05:24:15 -0600 (MDT) From: Tia Hoyes Subject: 2.5m obslog 971023 THURSDAY OCTOBER 23, 1997 APACHE POINT OBSERVATORY OBSERVING LOG ACTUAL ASTRONOMER INSTRUMENT DATE START FINISH Reiss DIS 10/23 19:30 20:50 Kron DIS 10/23 20:51 ----- York SPICAM 10/23 ----- ----- INST SCHEDULED OBS WEATH EQUIP DAY NOTUSED I/RS/DN START FINISH D B D B D B USE D B UW04/R 19:44 20:44 1.0 0 0 0 0 0 0 0 0 Uc02/R 20:44 00:50 0.3 0 3.8 0 0 0 0 0 0 UC04/R 00:51 05:52 0 0 0.4 4.6 0 0 0 0 0 (note: times listed include instrument change time) ACTIVITY LOG (* means a trouble report has been issued or appended to) The telescope was opened at 19:45. Dan Zucker was allotted the time for UW04. He used DIS, but the focus was changing so rapidly (due to cool down), he did not get much useful data. Brad Holden was the observer for UC02. I just completed a focus sequence for him, when high humidity caused me to close. I tried to reopen at 00:05, but the bad weather persisted, and I had to close at 00:25. We encountered winds over 40mph, high dust counts, and extreme cloud cover. Connie Rockosi was the observer for UC04. She was also shut out by the weather. FOCUS LOG OCTOBER 23, 1997 Best Telescope Wind Seeing Time Inst Focus Az El Temp# Dir MPH filter FWHM " 19:55 DIS -500(5906) 137.1 42.3 3.6/5.6 263.4 13.8 IN 1.35 20:55 DIS -150(6190) 121.5 46.2 2.8/4.7 269.0 19.2 IN 2.27 # The first temp is air, the second is truss, both in degrees C. WEATHER OCTOBER 23, 1997 Wind Time Temp F Dewp. MPH. Dir. DUST Sky Precip. 16:01 41 35 16 288 (WNW) 306 partly cloudy none 17:01 42 34 13 290 (WNW) 292 partly cloudy none 18:01 40 31 12 284 (WNW) 249 partly cloudy none 19:01 39 30 12 274 (W) 309 hazy none 20:01 39 29 13 272 (W) 340 light clouds haze 21:01 37 33 19 265 (W) 542 heavy clouds none 22:01 36 33 13 268 (W) 623 overcast none 23:01 36 31 19 261 (W) 1141 overcast dust 00:01 36 29 13 268 (W) 1056 overcast windy 01:01 36 28 20 280 (W) 698 overcast none 02:01 36 29 17 263 (W) 774 overcast none 03:01 36 29 22 266 (W) 827 overcast none 04:01 35 30 22 269 (W) 838 overcast none 05:01 35 30 19 266 (W) 1006 overcast none note: the wind was coming from the azimuth listed. The convention used is north=0 degrees, east=90 degrees. The dust count is particles >1 micron per 0.1 cu. ft. TELESCOPE STATUS Primary, secondary, and tertiary mirrors in place and collimated. Primary support system operational. Mirror ventilation system in place. Telescope drives operational. Current Remark version: 2.36 Current guide software version:GIm Ctrlv3.0b11. -Tia