Date: Fri, 10 Oct 1997 06:08:13 -0600 (MDT) From: Tia Hoyes Subject: 3.5m obslog 971009 THURSDAY OCTOBER 9, 1997 APACHE POINT OBSERVATORY OBSERVING LOG ACTUAL ASTRONOMER INSTRUMENT DATE START FINISH Skelton GRIM2 10/09 18:05 05:30 INST SCHEDULED OBS WEATH EQUIP DAY NOTUSED I/RS/DN START FINISH D B D B D B USE D B UW08/R 19:59 05:42 0.5 2.4 4.3 2.5 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 19:00. The humidity rose quickly, and I had to close at 19:30. I could not reopen until 21:10. At this time, Brooke Skelton and Gene Magnier used GRIM2 to observe. I tested the GUIDER, and found it to be working properly. I had to close again at 23:35. I reopened at 1:35, but a thunderstorm was nearby and we had to close, as the humidity rose and stayed above 90% for the rest of the evening. FOCUS LOG OCTOBER 9, 1997 Best Telescope WIND Seeing Time Inst Focus AZ El Temp# Dir MPH filter FWHM" 21:00 GRIM2 -50(7162) 65.6 46.6 10.1/11.8 111.0 20.3 J 1.95 21:50 GUIDER 55000 85.3 62.5 9.7/9.9 112.4 19.2 R .89 # The first temp is air, the second is truss, both in degrees C. WEATHER OCTOBER 9, 1997 Wind Time Temp F Dewp. MPH Dir DUST Sky Precip. 16:01 clear none 17:01 58 38 5 138 (SE) 356 clear none 18:01 55 39 15 131 (SE) 398 clear none 19:01 51 45 14 100 (E) 816 clear none 20:01 50 46 15 101 (E) 802 clear none 21:01 50 42 17 114 (ESE) 527 clear none 22:01 50 35 13 91 (E) 376 clear none 23:01 49 43 16 104 (ESE) 599 clear none 00:01 48 45 14 84 (E) 820 clear none 01:01 49 44 15 115 (ESE) 638 clear lightning 02:01 49 44 16 112 (ESE) 563 clear lightning 03:01 48 46 13 99 (E) 714 clear lightning 04:01 48 46 13 88 (E) 666 clear lightning 05:01 49 45 13 111 (ESE) 586 clear none 06:01 50 43 21 125 (SE) 430 clear fog 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