Date: Wed, 21 Apr 1999 06:26:18 -0600 (MDT) From: Russet McMillan Subject: 3.5m Night Log 990420 Apache Point Observatory, Sunspot, NM Tuesday, April 20th, 1999 3.5-meter Night Observing Log Actual ---------------------------------------------------------------------- ASTRONOMER OBSERVER(S) INSTRUMENT DATE START FINISH ---------------------------------------------------------------------- A.Diercks A.Diercks GrIm II 4/20 20:05 21:50 Zhen Z.Tsvetanov GrIm II/DIS 4/20-21 21:51 01:20 G.Wallerstein G.Gonzalez SPIcam 4/21 -- -- ---------------------------------------------------------------------- INST SCHEDULED WEATH EQUIP OBS DAY NOTUSED I/RS/DN START FINISH D B D B D B USE D B ---------------------------------------------------------------------- UW01/R 21:04 21:52 - 0 - 0 - 0.8 - - 0 JH02/R 21:52 02:10 0.8 0.8 0 0 0.5 2.2 - 0 - PU01/R 02:10 04:59 2.8 - 0 - 0 - - 0 - -------------- Activity Log -------------- 1st Half Observing Specialist: N.C.Hastings I opened the telescope at 19:30 this evening. All running smooothly. The telescope was closed at 23:15 due to high winds. 2nd Half Observing Specialist: Russet McMillan The telescope was opened at midnight when the wind dropped, then closed again at 01:20 due to clouds. Around 01:00, the cloud camera stalled for no apparent reason -- this time not getting stuck at its northernmost point of motion, but sitting comfortably in the middle of its motion range. The spicam control program was once again claiming that /export/images on tycho was full (which it wasn't). Was a solution for this ever found? It's considerably slower to have to scp the images from dryrot. FOCUS LOG April 20th 1999 Best Telescope Temp Wind Seeing Time Instrmnt Focus Az El Air/Truss Dir MPH filter FWHM" --------------------------------------------------------------------- 20:20 GrIm II -300(6436) 212 77 11.7/13.3 264 22 f/5-J 0.97" 00:40 slitcam -150(6419) 145 52 10.3 /10.0 283 27 none 1.5 WEATHER LOG April 20th 1999 Wind Time Temp-F Dewp-F MPH Direction Dust Sky Precip ------------------------------------------------------------------ 16:01 63 16 16 259 (W) 1307 clear none 17:01 61 15 19 257 (WSW) 1668 clear none 18:01 59 15 30 267 (W) 2285 clear none 19:01 55 11 25 257 (WSW) 2415 clear none 20:01 53 10 22 266 (W) 1801 clear none 21:01 52 9 29 260 (W) 1716 clear none 22:01 52 9 21 270 (W) 1488 cirrus none 23:01 51 8 26 262 (W) 1072 cirrus none 00:01 50 9 16 276 (W) 919 ptly cldy none 01:01 50 9 16 289 (WNW) 890 mstly cldy none 02:01 50 10 24 258 (WSW) 720 mstly cldy none 03:01 50 9 24 276 (W) 688 overcast none 04:01 48 9 16 260 (W) 700 overcast none 05:01 47 9 13 247 (WSW) 686 overcast none 06:01 47 10 14 260 (W) 764 overcast none note: the wind was coming from the azimuth listed. The convention used is north=0 degrees, east=90 degrees. The dust count is for the 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: 2.55b5 Current guide software version: GIm Ctrl v3.0b 17.out - NCH, RM