Date: Mon, 4 May 1998 05:24:22 -0600 (MDT) From: Tia Hoyes Subject: 3.5m obslog 980503 SUNDAY MAY 3, 1998 APACHE POINT OBSERVATORY OBSERVING LOG ACTUAL ASTRONOMER OBSERVER INSTRUMENT DATE START FINISH Hereld Bell GRIM2 5/03 ----- ----- Oegerle Oegerle DIS 5/03 ----- ----- INST SCHEDULED OBS WEATH EQUIP DAY NOTUSED I/RS/DN START FINISH D B D B D B USE D B UC08/R 21:18 01:10 0 0 0 3.9 0 0 0 0 0 JH06/R 01:10 04:42 0 0 2.2 1.4 0 0 0 0 0 (note: times listed include instrument change time) ACTIVITY LOG The telescope was open tonight at 19:00. Eric Bell was available for the first half of the evening. I proceeded to focus at 20:45. I had to close at 21:00 due to high dust counts. Bill Oergerle was available for the second half of the evening. He was also shut out by high dust counts. (* means a trouble report has been issued or appended to) FOCUS LOG MAY 3, 1998 Best Telescope Wind Seeing Time Inst Focus Az El Temp# Dir MPH filter FWHM " 20:45 GRIM2 -200(6547) 232.5 59.2 11.8/12.67 253.6 10.2 K prim 2.10 # The first temp is air, the second is truss, both in degrees C. WEATHER MAY 3, 1998 Wind Time Temp F Dewp. MPH. Dir. DUST Sky Precip. 16:01 60 8 5 253 (WSW) 1594 light cirrus none 17:01 63 12 11 246 (WSW) 1952 light cirrus none 18:01 60 9 11 260 (W) 2176 light cirrus dust 19:01 57 4 13 268 (W) 2392 light cirrus dust 20:01 52 1 10 261 (W) 2534 light cirrus dust 21:01 51 0 13 256 (WSW) 3218 cirrus dust 22:01 52 2 13 265 (W) 3229 cirrus dust 23:01 51 3 16 275 (W) 3894 heavy cirrus dust 00:01 51 6 13 293 (WNW) 4293 cirrus dust 01:01 50 6 18 275 (W) 4089 cirrus dust 02:01 50 7 14 269 (W) 4295 cirrus dust 03:01 49 8 17 272 (W) 4451 cirrus dust 04:01 48 6 17 299 (WNW) 4649 cirrus dust 05:01 48 10 16 273 (W) 4757 cirrus dust 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. -Tia