Date: Sun, 18 Apr 1999 06:09:38 -0600 (MDT) From: Russet McMillan Subject: 3.5m Night Log 990417 SATURDAY APRIL 17, 1999 APACHE POINT OBSERVATORY OBSERVING LOG ACTUAL ASTRONOMER OBSERVER(S) INSTRUMENT DATE START FINISH Newberg Richards DIS 4/17-18 21:01 01:10 Margon Anderson, Deutsch DIS 4/18 01:10 05:04 INST SCHEDULED WEATH EQUIP OBS DAY NOTUSED I/RS/DN START FINISH D B D B D B USE D B UC06/R 21:01 01:10 0 0 0 0 3.6 0.6 - 0 0 UW04/R 01:10 05:04 0 - 0 - 3.9 - - 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 19:30 MDT. Gordon Richards observed for UC06 with DIS. The weather was fine, and there were no problems during his run. 2nd half observing specialist: Russet McMillan Second half was productive and uneventful, with scattered clouds. OBSERVER COMMENTS G. Richards (UC06): A banner night. FOCUS LOG APRIL 17 1999 Wind Time Inst Focus Az El #Temp Dir MPH filt FWHM " 20:10 slitcam -225(6154) 314 45 3.9/5.0 16 10 none 1.5 20:15 guider 57100(6150) 314 45 4.1/5.0 71 2 none 1.6 20:41 slitcam -175(6211) 264 39 4.0/4.6 264 6 none 1.4 20:55 guider 57500(6221) 265 37 4.1/4.5 250 3 none 1.5 22;30 guider 55500(6109) 260 49 3.3/3.4 305 1 none 1.2 #First temp is air, second temp is telescope. WEATHER APRIL 17 1999 Wind Time Temp F Dewp F MPH Direction Dust Sky Precip. 16:01 42 3 12 346 (NNW) 846 clear none 17:01 44 3 6 2 (N) 915 clear none 18:01 42 4 5 344 (NNW) 735 clear none 19:01 41 5 13 327 (NNW) 871 clear none 20:01 39 4 4 61 (ENE) 858 clear none 21:01 39 -3 4 251 (WSW) 826 clear none 22:01 38 2 3 259 (W) 984 cirrus none 23:01 39 0 4 284 (WNW) 896 cirrus none 00:01 40 0 10 311 (NW) 728 cirrus none 01:01 40 0 8 311 (NW) 696 cirrus none 02:01 39 0 1 279 (W) 781 cirrus none 03:01 40 4 1 349 (NNW) 888 ptly cldy none 04:01 40 5 10 351 (N) 808 ptly cldy none 05:01 40 4 8 310 (NW) 850 ptly cldy none 06:01 40 3 7 351 (N) 812 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: 2.52 Current guide software version: GIm Ctrlv3.0b17. - Karen Gloria, Russet McMillan