Date: Sat, 18 Apr 1998 06:06:10 -0600 (MDT) From: Tia Hoyes Subject: 3.5m obslog 980417 FRIDAY APRIL 17, 1998 APACHE POINT OBSERVATORY OBSERVING LOG ACTUAL ASTRONOMER INSTRUMENT DATE START FINISH York DIS 4/17 19:20 21:00 Turner DIS 4/17 21:00 21:40 Hameed DIS 4/17 21:50 00:45 Wyse GRIM2 4/17 01:15 INST SCHEDULED OBS WEATH EQUIP DAY NOTUSED I/RS/DN START FINISH D B D B D B USE D B UC10/R 19:38 21:02 1.5 0 0 0 0 0 0 0 0 PU01/S 21:02 21:42 0.7 0 0 0 0 0 0 0 0 NM03/R 21:42 01:10 3.1 0.3 0 0 0 0 0 0 0 JH05/R 01:10 05:03 0 3.9 0 0 0 0 0 0 0 (note: times listed include instrument change time) ACTIVITY LOG The telescope was opened at 18:30. Dave Cole was observing for the Adler run. Comments: Everything really went quite well tonight. The only difficulties were with software: ftp logins kept bombing, and CU-SeeMe transmitted an entirely blank image. We were able to use our twilight time to image both Arp 82 and Arp 58. I observed 0957 for the Lens Monitoring run. Good seeing. Salman Hameed was observing for NM03. Comments:Everything went very smoothly. It was a photometric night with close to 1" seeing. The telescope pointing was very good. Overall an excellent observing night." Rosie Wyse observed for the last half of the evening. She had 0.75 arcsec seeing with GRIM2. Comments:A great night! Despite the dismal weather forecast! (* means a trouble report has been issued or appended to) FOCUS LOG APRIL 17, 1998 Best Telescope Wind Seeing Time Inst Focus Az El Temp# Dir MPH filter FWHM " 20:20 DIS -200(5862) 111.2 60.7 -1.5/-0.59 5.6 5.1 IN 1.14 21:55 DIS -100(5916) -13.9 65.5 -1.2/-1.41 349.5 5.3 IN 1.02 01:20 GRIM2 -150(5968) 72.6 58.1 -1.7/-1.85 309.0 6.2 H 0.75 # The first temp is air, the second is truss, both in degrees C. WEATHER APRIL 17, 1998 Wind Time Temp F Dewp. MPH. Dir. DUST Sky Precip. 16:01 34 12 0 266 (W) 373 partly cloudy none 17:01 34 13 6 348 (NNW) 271 partly cloudy none 18:01 35 11 9 308 (NW) 273 partly cloudy none 19:01 31 12 2 345 (NNW) 303 partly cloudy none 20:01 29 10 6 356 (N) 483 clearing none 21:01 29 10 9 356 (N) 318 clear none 22:01 30 8 2 40 (NE) 286 clear none 23:01 30 9 12 348 (NNW) 323 clear none 00:01 30 9 6 358 (N) 358 clear none 01:01 29 11 4 322 (NW) 308 clear none 02:01 28 12 2 264 (W) 315 clear none 03:01 29 11 3 239 (WSW) 325 clear none 04:01 29 10 6 266 (W) 292 light clouds none 05:01 29 9 6 270 (W) 359 clear none 06:01 27 12 6 264 (W) 328 clear 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. -Tia