Date: Sun, 17 Jan 1999 06:12:02 -0700 (MST) From: Karen Gloria Subject: 3.5-m obslog 990116 SATURDAY JANUARY 16, 1999 APACHE POINT OBSERVATORY OBSERVING LOG ACTUAL ASTRONOMER OBSERVER(S) INSTRUMENT DATE START FINISH Zheng Zheng, Tsvetenov DIS 1/16-17 18:47 05:39 INST SCHEDULED WEATH EQUIP OBS DAY NOTUSED I/RS/DN START FINISH D B D B D B USE D B JH02/R 18:47 05:39 0 - 0 - 10.9 - 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: Camron Hastings Telescope was opened at 18:45 MST after the observers finished their cals. All computer and mechanical systems working fine. 2nd half observing specialist: Karen Gloria The seeing was poor for the first half of the night, but improved a bit during the second half. Wei Zheng's Macintosh hung a few times, causing some delays. Other than that, things ran smoothly. OBSERVER COMMENTS JH02 (Zheng): "It has been a smooth observation run, with seeing improving with time until early morning. The position offset appears to be not exact, with different results if moving from up or down direction. Does it suggest a mechanical gap?" FOCUS LOG JANUARY 16 1998 Wind Time Inst Focus Az El #Temp Dir MPH filt FWHM " 19:10 DIS -150(6065) 181 59 0.8/3.4 270 22 none 2.37 20:40 DIS -170(????) 224 50 0.3/0.6 269 20 none 2.01 00:30 DIS -130(5879) 160 85 -0.4/-0.7 297 13 none 1.6 00:45 guider 54724(5878) 188 85 -0.4/-0.8 277 15 none 1.6 #First temp is air, second temp is telescope. WEATHER JANUARY 16 1998 Wind Time Temp F Dewp F MPH Direction Dust Sky Precip. 16:01 39 9 23 258 (WSW) Cloudy None 17:01 37 6 26 268 (W) Cloudy None 18:01 35 11 16 260 (W) Ptly Cldy None 19:01 34 14 22 273 (W) Mstly Clr None 20:01 33 14 17 281 (W) Mstly Clr None 21:01 32 13 14 273 (W) Mstly Clr None 22:01 32 13 12 273 (W) Clear None 23:01 32 14 11 269 (W) Clear None 00:01 32 15 16 295 (WNW) Clear None 01:01 31 16 16 272 (W) Clear None 02:01 31 15 12 302 (WNW) Ptly Cldy None 03:01 32 13 18 331 (NNW) Clear None 04:01 32 15 9 326 (NW) Clear 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: 2.42a Current guide software version: GIm Ctrlv3.0b15. - Camron Hastings, Karen Gloria