From: Russet McMillan Subject: 3.5m Night Log 990322 Date: Tue, 23 Mar 1999 05:24:36 -0700 (MST) SUNDAY MARCH 21, 1999 APACHE POINT OBSERVATORY OBSERVING LOG ACTUAL ASTRONOMER OBSERVER(S) INSTRUMENT DATE START FINISH Strauss Fan, Strauss DIS 3/22-23 19:39 00:10 Austin Austin DIS 3/23 00:10 04:41 INST SCHEDULED WEATH EQUIP OBS DAY NOTUSED I/RS/DN START FINISH D B D B D B USE D B PU01/R 19:39 00:10 0 0 0 0 0.2 4.3 0 0 0 WS01/R 00:10 04:41 4.5 - 0 - 0 - 0 0 - (note: times listed include instrument change time) ACTIVITY LOG (* means a trouble report has been issued or appended to) 1st half observing specialist: Karen Gloria The telescope was opened at 18:10 MST. No problems to report. Xiaohui Fan and Michael Strauss observed for PU01. Some high clouds began to move in around 21:30 MST. 2nd half observing specialist: Russet McMillan Cloud started thickening after midnight, and by the time we had slewed to the first object for WS01, it was pretty much impossible to get useful data. The telescope was closed due to clouds at 01:45. OBSERVER COMMENTS FOCUS LOG MARCH 22 1999 Wind Time Inst Focus Az El #Temp Dir MPH filt FWHM " 18:55 slitcam 0(6597) 231 43 8.6/9.9 261 16 none 1.3 19:00 guider 54725(6600) 232 43 8.6/9.7 265 16 none 1.8 22:20 slitcam -150(6473) 104 21 7.4/7.4 266 22 none 2.0 #First temp is air, second temp is telescope. WEATHER MARCH 22 1999 Wind Time Temp F Dewp F MPH Direction Dust Sky Precip. 16:01 53 10 11 243 (WSW) 752 clear none 17:01 52 9 5 246 (WSW) 786 clear none 18:01 50 7 15 231 (SW) 1006 clear none 19:01 47 5 25 238 (WSW) 965 clear none 20:01 47 4 8 246 (WSW) 928 clear none 21:01 47 5 12 266 (W) 591 clear none 22:01 46 5 24 271 (W) 658 hi clds none 23:01 45 6 16 272 (W) 699 hi clds none 00:01 44 6 16 280 (W) 759 ptly cldy none 01:01 44 7 17 291 (WNW) 665 mstly cldy none 02:01 44 8 15 288 (WNW) 659 mstly cldy none 03:01 43 8 11 298 (WNW) 650 mstly cldy none 04:01 43 7 17 316 (NW) 681 mstly cldy none 05:01 42 7 5 342 (NNW) 943 mstly 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: 2.52 Current guide software version: GIm Ctrlv3.0b17. - Karen Gloria, Russet McMillan