Date: Thu, 31 Jul 1997 05:23:02 -0600 (MDT) From: Karen Gloria Subject: 3.5-m obslog 970730 WEDNESDAY JULY 30, 1997 APACHE POINT OBSERVATORY OBSERVING LOG ACTUAL ASTRONOMER INSTRUMENT DATE START FINISH Hameed DIS 7/30-31 - - Kron GRIM2 7/31 - - INST SCHEDULED OBS WEATH EQUIP DAY NOTUSED I/RS/DN START FINISH D B D B D B USE D B NM01/R 21:37 01:10 0 - 3.6 - 0 - 0 0 - UC02/R 01:10 04:43 0 0 2.8 0.7 0 0 0 0 0 (note: times listed include instrument change time) ACTIVITY LOG (* means a trouble report has been issued or appended to) Due to clouds, high humidity, fog, and occasional rain, the telescope was not opened. The observers were Nick Devereux for NM01 and Marianne Takamiya and Mark Chun for UC02. Nick gave up his time early on, as he needed the sky to be photometric. Marianne and Mark remained on call. Tia Hoyes and I did some prep work on parts for the new primary mirror ventilation tubes to be installed during the shutdown. Telescope usage statistics for the period 7/24/97 through 7/30/97: DARK BRIGHT Hrs. lost to weather 26.2 20.2 Hrs. lost to equip. failure 0.0 0.0 Useful hours 1.9 0.9 Total hours 28.1 21.1 Percentages of total dark and bright hours: % lost to weather 94.3% % lost to equip. failure 0.0% % useful hours 5.7% FOCUS LOG JULY 30 1997 Best Telescope Wind Seeing Time Inst Focus Az El #Temp Dir MPH filter FWHM " - no focus data - #The first temp is air, the second is truss, both in degrees Celsius WEATHER JULY 30 1997 Wind Time Temp F Dewp. F MPH. Dir. Dust Sky Precip. 16:01 62 52 13 132 (SE) 2110 mstly cldy fog 17:01 59 51 14 106 (ESE) 1699 mstly cldy fog 18:01 57 54 8 92 (E) 2109 mstly cldy fog 19:01 57 51 17 108 (ESE) 1915 mstly cldy none 20:01 57 49 15 114 (ESE) 1751 ptly cldy none 21:01 56 50 13 93 (E) 1763 ptly cldy none 22:01 55 50 10 180 (S) 1896 overcast rain 23:01 54 50 15 148 (SSE) 2078 overcast rain 00:01 53 53 16 115 (ESE) 2188 overcast lt rain 01:01 54 51 18 109 (ESE) 2061 overcast fog 02:01 53 50 15 177 (S) 2141 mstly cldy none 03:01 51 51 20 118 (ESE) 1477 overcast fog 04:01 53 51 19 114 (ESE) 3527 ptly cldy none 05:01 54 50 20 155 (SSE) 3132 ptly cldy 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: GImCtrl.1 6.21.97. -Karen