Date: Tue, 4 Jul 2000 06:41:17 -0600 (MDT) From: Frank Deglman Subject: Night Log 03Jul00 MONDAY JULY 03 2000 APACHE POINT OBSERVATORY OBSERVING LOG ACTUAL ASTRONOMER OBSERVER(S) INSTRUMENT DATE START FINISH Menou Kim DIS 7/03 21:30 23:14 Kim Kim DIS 7/04 23:14 00:58 Meurer Meurer SPIcam 7/04 01:23 05:50 INST SCHEDULED WEATH EQUIP OBS DAY NOTUSED I/RS/DN START FINISH D B D B D B USE D B PU09/R 21:18 23:14 0 0.2 0 0 0.9 0.8 - 0 0 PU04/R 23:14 01:10 0 - 0 - 1.9 - - 0 - JH03/R 01:10 04:57 0 - 0 - 3.8 - - 0 - (note: times listed include instrument change time) ACTIVITY LOG (* means a trouble report has been issued or appended to) Observing Specialist: deglman The DIS low-resolution gratings were installed and zero-step adjusted. Initially did not home DIS, but this seemed to make no noticeable difference after homing when comparing positioning. During afternoon preparations, the PMSS alarm went off without any obvious operator/telescope interaction. The pressure was reading about 37-38 psi. It quit after several minutes. The gauge then read 39 psi. The sky cleared around 21:15 and dome was opened at 21:25. Figured about a dozen scheduled minutes lost to weather. Initial focus was substantially negative for DIS, probably due to late cooling of 3.5m. It was closer to expected value after a later focus. John Briggs was doing more DIMM-2 measurements from the WSMR dome (along side DIMM-1). After starting, the DIMM plot was showing the entirety of last night's data along with updating of tonight's. Both flux and fwhm were doubled. Later, from 22:30 to 01:45, last night's values were erased as each current data point was being plotted. After 01:45, the overplotting resumed. Sometime after 03:00, no 2ndary pistoning info was being plotted (in IDL window), eventhough a slew had been done. At about 04:20, SPIcam quickly drifted out of focus by 100 microns in ~15 minutes. Refocused and realized downwards of 0.6 arcsec seeing (0.5 with NA2 guider). Since there was an actual difference in focus, it was not an auto collimate problem. Some of the narrower band filters necessitated doing twilight flats very close to sunrise. Closed at 05:55. Biases were then done before dimounting SPIcam. OBSERVER COMMENTS FOCUS LOG JULY 03 2000 Time Instrument Focus Az El #Temp Dir MPH filt FWHM " 21:35 DISslit -150(756) -57 35 16.8/20.0 180 5 none 1.68 21:40 NA2gdr -1285 red 1.14 23:35 DISslit +75(901) -47 23 16.5/16.9 109 7 none 1.14 23:50 NA2gdr -985 red 0.91 01:35 SPIcam 0(577) -28 55 16.0/15.9 184 6 (all) 0.9 02:00 NA2gdr -134 red 1.24 04:25 SPIcam +100(713) -17 40 16.5/15.4 274 7 0.62 04:30 NA2gdr -196 red 0.52 #First temp is air, second temp is telescope. WEATHER JULY 03 2000 Wind Time Temp F Dewp F MPH Direction Dust Sky Precip. 19:01 65 44 2 261 (W) 359 cloudy tr rain 20:01 66 46 5 249 (WSW) 365 cloudy none 21:01 62 44 3 188 (S) 352 ptly cldy none 22:01 60 44 1 185 (S) 435 hazy none 23:01 62 46 8 183 (S) 498 clear none 00:01 61 44 6 185 (S) 424 clear none 01:01 61 41 6 187 (S) 540 clear none 02:01 61 40 7 217 (SW) 521 clear none 03:01 60 40 6 239 (WSW) 588 hazy none 04:01 62 38 6 281 (W) 593 hazy none 05:01 61 38 7 272 (W) 535 hazy none 06:01 62 38 6 292 (WNW) 534 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: 2.55b5. Current guide software version: GIm Ctrlv3.0b27. Current TCC version is 2.3.1. Current MC version: v1_7_2. - frank