Date: Thu, 1 Jan 1998 07:17:15 -0700 (MST) From: Tia Hoyes Subject: 3.5m obslog 971231 WEDNESDAY DECEMBER 31, 1997 APACHE POINT OBSERVATORY OBSERVING LOG ACTUAL ASTRONOMER INSTRUMENT DATE START FINISH Turner DIS 12/31 17:47 19:03 Tomaney SPICAM 12/31 19:25 00:04 Diercks SPICAM 12/31 00:15 06:42 INST SCHEDULED OBS WEATH EQUIP DAY NOTUSED I/RS/DN START FINISH D B D B D B USE D B PU01/S 18:35 19:18 0 0.7 0 0 0 0 0 0 0 UW12/R 19:18 23:50 4.3 0.3 0 0 0 0 0 0 0 UW04/R 23:50 00:50 0 0 0 0 0 0 0 1.0 0 UW02/R 00:50 01:20 0 0 0 0 0 0 0 0.5 0 UW01/R 01:20 05:38 4.3 0 0 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 opened at 17:35. I observed 2237 and 2345 for the Lens Monitoring run. No problems. Austin Tomaney was the second observer, and most of his run was clear. Comments: Apart from the encoder slippage, everything went ok. I got a 500 second exposure with 0.8 arcsec seeing! York and Stubbs gave their time to Alan Diercks. He used it for a variety of observing. Testing the Guider, and GRB were two. Although we were plagued with heavy cirrus for 3.5 hours, Alan still managed to have 0.8 arcsec seeing in a 900 second exposure. Comments:Except for the one guider glitch, everything went very smoothly. Seeing was excellent, I had several 0.8 arcsec images in 900 seconds. (the guider was power cycled) HAPPY NEW YEAR!!!! FOCUS LOG DECEMBER 31, 1997 Best Telescope Wind Seeing Time Inst Focus Az El Temp# Dir MPH filter FWHM " 18:09 DIS 0(6323) -127.2 47.3 1.2/4.2 202.6 2.9 IN 1.1 19:30 SPICAM -175(5935) -57.4 71.1 0.8/1.78 227.2 3.0 R 0.78 20:00 GUIDER 45000 -61.2 65.9 0.5/1.29 210.6 4.6 R 2.53 21:30 SPICAM -100(6011) -62.5 47.4 1.0/0.89 279.4 9.4 R 1.25 21:50 SPICAM -60(6064) -62.0 44.7 1.4/0.9 279.4 10.2 R 0.8 02:50 GUIDER 51000 236.7 40.2 2.1/1.5 302.5 14.6 R 0.94 03:10 SPICAM -25(6107) 34.5 49.9 3.4/1.65 303.5 15.8 I 1.0 # The first temp is air, the second is truss, both in degrees C. WEATHER DECEMBER 31, 1997 Wind Time Temp F Dewp. MPH. Dir. DUST Sky Precip. 16:01 36 24 0 182 (S) 291 clear none 17:01 35 14 3 252 (WSW) 40 clear none 18:01 35 11 1 253 (WSW) 43 clear none 19:01 32 12 5 185 (S) 70 clear none 20:01 34 13 4 220 (SW) 82 clear none 21:01 34 11 8 280 (W) 57 clear none 22:01 35 11 6 277 (W) 38 light clouds none 23:01 33 13 8 304 (NW) 68 partly cloudy none 00:01 36 9 10 279 (W) 31 partly clouds none 01:01 35 10 7 292 (WNW) 23 heavy cirrus none 02:01 36 8 7 288 (WNW) 30 heavy cirrus none 03:01 36 6 12 331 (NNW) 23 partly cloudy none 04:01 38 4 13 292 (WNW) 16 partly cloudy none 05:01 37 5 11 323 (NW) 29 partly cloudy none 06:01 39 5 12 311 (NW) 14 cirrus none 07:01 39 4 12 327 (NNW) 13 cirrus 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: 2.36 Current guide software version:GIm Ctrlv3.0b11. -Tia