From: Russet McMillan Subject: 3.5m Night Log 20010119 Date: Sat, 20 Jan 2001 06:58:03 -0700 (MST) APACHE POINT OBSERVATORY 3.5m Telescope Night Log Friday, January 19th, 2001 ACTUAL ASTRONOMER OBSERVER(S) INSTRUMENT START FINISH -------------------------------------------------------------------- C.Stubbs G.Miknaitis,A.Rest SPIcam 17:30 20:30 J.Knapp J.Knapp, X.Fan SPIcam 20:30 23:50 R.Walterbos R.Walterbos DIS 00:17 07:15 INST SCHEDULED WEATH EQUIP OBS DAY NOTUSED I/RO/DN START FINISH D B D B D B USE D B -------------------------------------------------------------------- UW??/R/D 18:20 20:30 0 0 0 0 2.2 0 0 0 0 PU05/R 20:30 00:10 0 0 0 0 3.6 0 0 0 0 NM04/O 00:10 06:08 0 0 0.2 0 3.6 2.2 0 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist, 1st Shift: Jack Dembicky Exhaust fans on 16:00. When examining SPIcam tonight (before mounting) noticed condensate formed on chip (some debate on this at the moment). Russet said to notified all SPIcam users tonight (PU and UW, as well as NM observers (who may take an image with SPIcam before his instrument change) to use evening flats taken tonight for all data taken with SPIcam tonight. This is the same crescent shaped condensate that formed before. Chris Stubbs was also notified of the SPIcam problem. It was not on the exterior of the window. SPIcam was useable otherwise and evening flats were taken tonight. Drop-in time was given up from PU05 to UW to make up for extra time given to DD02 last quarter. DIS then decided to act up with the slit wheel continously rotating. Again, Russet suggested power cycling DIS, but did not fix the problem. Craig Loomis was here and he investigated (and Mark K. was also notified of both SPIcam and DIS problems). Russet will take calibrate the images before use (since it was important for SPIcam to get evening flats) and the time taken will be counted as equipment time. I heard the motor noises very pronounced tonight while up on the enclosure level and the telescope was being slewed. Jon and Mark are aware of these and the motor repair is in the pipeline already. Less than 1 arc sec seeing for most of the first half. Observing Specialist, 2nd Shift: Russet McMillan Going on Craig's suspicion that the slit wheel motor was all right but was unable to home the new wheel, I moved the desired slit to one of the older wheels and mounted that; it worked just fine. The new wheel is at fault, and DIS itself is perfectly healthy. After the instrument change, I took a few minutes to calibrate the medium gratings, since that had been impossible earlier, but it didn't cost very much time. Once again we had some pointing trouble, but after that was cleared up with a single pointing correction, everything went well. Despite all the equipment difficulties tonight, very little time was lost and the observing conditions were excellent. --------------- INSTRUMENT FOCUS LOG ---------------- Air/Truss Wind Time Instrument Focus Az El Temp-C Dir MPH filt FWHM" --------------------------------------------------------------------- 18:23 SPIcam -250(280) 340 54 -7.7/-4.5 289 5 r' 0.85 18:35 NA2gdr 751(60750) 279 65 -8.1/-5.4 291 6 none 21:00 NA2gdr -2260(56001) 256 43 -7.8/-7.9 328 4 none 1.22 22:40 NA2gdr 727(58001) 192 42 -5.5/-7.6 358 7 none 1.14 00:46 DISslit 40(360) 11 52 -5.3/-6.5 347 12 - 0.89 ------------- WEATHER CONDITIONS ------------ Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:01 24 11 5 228 (SW) 222 clear none 17:01 19 7 2 263 (W) 272 clear none 18:01 18 4 5 299 (WNW) 195 clear none 19:01 17 4 6 330 (NNW) 250 clear none 20:01 17 8 4 311 (NW) 550 clear none 21:01 18 4 4 301 (WNW) 269 clear none 22:01 19 3 6 4 (N) 172 clear none 23:01 23 9 8 20 (NNE) 206 lt. cirrus none 00:01 22 9 8 355 (N) 200 lt. cirrus none 01:01 22 8 7 345 (NNW) 200 cirrus none 02:01 24 6 12 356 (N) 237 lt. cirrus none 03:01 23 7 6 347 (NNW) 224 lt. cirrus none 04:01 24 4 12 355 (N) 199 lt. cirrus none 05:01 24 9 14 338 (NNW) 200 cirrus none 06:01 24 9 9 339 (NNW) 190 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 > 1u per 0.1 cubic feet. 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: 2.62. Current guide software version: GIm Ctrlv3.0b27. Current TCC version is 2.4.1 Current MC version: v1_7_3. - Jack Dembicky, Russet McMillan