Date: Fri, 20 Feb 1998 05:36:00 -0700 (MST) From: Karen Gloria Subject: 3.5-m obslog 980219 THURSDAY FEBRUARY 19, 1998 APACHE POINT OBSERVATORY OBSERVING LOG ACTUAL ASTRONOMER INSTRUMENT DATE START FINISH Ford DIS 2/19-20 19:15 23:30 Turner DIS 2/20 - - Lutz DIS 2/20 00:50 04:45 INST SCHEDULED OBS WEATH EQUIP DAY NOTUSED I/RS/DN START FINISH D B D B D B USE D B JH03/R 19:15 00:10 3.3 - 1.6 - 0 - 0 0 - PU01/S 00:10 00:50 0 - 0.7 - 0 - 0 0 - WS01/R 00:50 05:19 0 2.4 0.6 1.5 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 17:00 MST. Charles Corson was the observing specialist for the first half of the night. The observers were Zlatan Tsventanov for JH03, myself for PU01, and Julie Lutz for WS01. Zlatan was unable to observe remotely, due to JHU maintenance of their computer systems, so Charles observed for him. The first half of the night had variable clouds. Charles closed the telescope at 21:50 MST, was able to reopen at 22:45 MST, but had to close again at 23:30 MST. I reopened under high clouds at 01:35 MST, and closed at 04:00 MST. We waited for the sky to clear, but gave up for the night at 04:45 MST. OBSERVER COMMENTS Julie (WS01) - "Clouds interfered with getting faint objects, but otherwise everything went well. The observing Mac crashed once." FOCUS LOG FEBRUARY 19 1997 Best Telescope Wind Seeing Time Inst Focus Az El #Temp Dir MPH filter FWHM " 01:40 DIS + 50(5945) 313 75 -3.0/-3.9 261 14 r 1.3 #The first temp is air, the second is truss, both in degrees Celsius WEATHER FEBRUARY 19 1997 Wind Time Temp F Dewp. F MPH. Dir. Dust Sky Precip. 16:01 27 24 5 259 (W) 368 cirrus none 17:01 26 20 5 277 (W) 302 cirrus none 18:01 23 18 8 261 (W) 360 cirrus none 19:01 23 18 7 233 (SW) 670 cirrus none 20:01 24 18 9 213 (SSW) 868 cirrus none 21:01 25 15 7 217 (SW) 638 cirrus none 22:01 23 14 2 226 (SW) 472 ptly cldy none 23:01 28 8 6 256 (WSW) 352 mstly cldy none 00:01 25 13 5 236 (SW) 353 mstly cldy none 01:01 27 12 8 220 (SW) 321 mstly cldy none 02:01 26 8 8 263 (W) 240 ptly cldy none 03:01 27 2 12 243 (WSW) 122 ptly cldy none 04:01 26 12 14 237 (WSW) 146 mstly cldy none 05:01 26 12 13 267 (W) 185 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: 2.39. Current guide software version: GIm Ctrlv3.0b11. -Karen