Date: Sat, 21 Feb 1998 05:37:29 -0700 (MST) From: Karen Gloria Subject: 3.5-m obslog 980220 FRIDAY FEBRUARY 20, 1998 APACHE POINT OBSERVATORY OBSERVING LOG ACTUAL ASTRONOMER INSTRUMENT DATE START FINISH Adler DIS 2/20 - - Ford DIS 2/20-21 - - Secker DIS 2/21 INST SCHEDULED OBS WEATH EQUIP DAY NOTUSED I/RS/DN START FINISH D B D B D B USE D B UC12/R 17:46 19:16 - - - - - - 1.5 - - JH03/R 19:16 00:10 0 - 4.9 - 0 - 0 0 - WS01/R 00:10 05:18 0 0 2.1 3.0 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 not opened, due to clouds and a dusting of snow. In addition, about an inch or so of snow accumulated during the day. The sky started to clear after 3:00 MST, but I decided not to open, due to the snow on the enclosure roof. I tried to melt this off with the roof heaters and am leaving these on to help the snow melt during the morning The DIS pc is returning a udptime error. Robert Lupton encountered this late this evening. This may prevent me from homing the spectrograph. SPIcam has been pumping down since the afternoon. It is down to 4.5E-7, so I've closed the valve to the camera and plan to check the vacuum this afternoon to see how well it is holding. If all looks OK, I will begin cooling. If there are no problems, the instrument should be back in service for Sunday evening. OBSERVER COMMENTS FOCUS LOG FEBRUARY 20 1997 Best Telescope Wind Seeing Time Inst Focus Az El #Temp Dir MPH filter FWHM " - none - #The first temp is air, the second is truss, both in degrees Celsius WEATHER FEBRUARY 20 1997 Wind Time Temp F Dewp. F MPH. Dir. Dust Sky Precip. 16:01 30 20 11 178 (S) 296 overcast none 17:01 30 16 16 181 (S) 275 overcast none 18:01 31 12 18 181 (S) 311 overcast none 19:01 31 12 17 178 (S) 344 overcast none 20:01 32 12 19 182 (S) 407 overcast none 21:01 30 12 18 132 (SE) 372 overcast none 22:01 29 16 17 113 (ESE) 388 overcast none 23:01 26 22 0 260 (W) 371 overcast lt snow 00:01 24 22 10 89 (E) 382 overcast flurries 01:01 24 22 7 92 (E) 480 overcast flurries 02:01 24 21 8 86 (E) 476 overcast none 03:01 27 18 3 109 (ESE) 448 ptly cldy none 04:01 26 19 5 78 (ENE) 495 ptly cldy none 05:01 25 19 6 327 (NNW) 406 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: 2.39. Current guide software version: GIm Ctrlv3.0b11. -Karen