From: Russet McMillan Subject: 3.5m Night Log 20071203 Date: Tue, 4 Dec 2007 06:33:56 -0700 (MST) Apache Point Observatory 3.5m Telescope Night Log Monday, December 3, 2007 ACTUAL ASTRONOMER OBSERVER(S) INSTRUMENT START FINISH ------------------------------------------------------------------- C.Miller C.Miller Agile 17:20 23:05 C.Oliveira C.Grady,W.Miller DIS 00:20 05:19 T.Murphy R.McMillan,T.Murphy APOLLO 05:25 06:25 INST SCHED(TWILIGHT) WEATH EQUIP OBS DAY NOT USED I/ROW/DN START FINISH D B D B D B USE D B -------------------------------------------------------------------- NM03/R 17:54 00:05 0 0 0 0 6.2 0 0 0 0 JH07/R 00:05 05:22 0 0 0.6 0 1.6 3.1 0 0 0 UW15/O 05:22 06:41 0 0 0 0 0 0.5 0.5 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialists: R.McMillan Another clear night with variable seeing. Wind hovered near the limit much of the night and slipped over a couple of times; I encouraged the observers to point away from the wind and kept an eye on telescope telemetry, and all seemed well. During morning twilight the wind got even higher; I stopped APOLLO a little earlier than desired. During checkout, we did some tests of the new rotator controller and found some communication problems between the controller and TUI, which Fritz is working on. We reverted back to the old controller for observing. When I measured the axis velocity scales, they were unchanged with the azimuth around 590; but a very noisy slew a couple of hours later prompted me to re-measure, and the azimuth had changed to 577. I left it at 580 in the file, which worked for the remainder of the night. Observing specialists may have to watch for it to jump back again in the near future, or it might be settled down for the season. The first half observer quit early, after the second half folks had logged in; nevertheless, they took a while to get going. When I focused DIS I had trouble getting the star to move in the right direction. I discovered that the rotator was off by a very large amount (25.65 deg). I think this happened at the time of the instrument block, but I'm not sure what caused it. I did a hasty correction and we got going on-sky. ------- FAILURE LOG ------- PROG INST FAILURE MODE TIME (SEDFNVOG) TI/SHU START FINISH DESCRIPTION ---------------------------------------------------------------------- JH07 D T/H 00:26 00:51 Rotator off by 25 deg ---------------- FOCUS LOG --------------- Time Instrument Focus Az El Temp Strc Prim Sec Air filt FWHM ---------------------------------------------------------------------- 17:48 AGILE -360( -331) 159 39 7.6 8.1 8.2 7.6 7.9 I 0.80 20:12 AGILE -400( -377) 321 43 7.6 7.6 8.0 7.1 7.4 I 1.02 00:33 dis-slit -100( 95) 244 75 7.6 7.9 8.3 7.7 8.4 - 1.38 05:29 APOLLO 75( 1127) 54 27 7.6 10.1 10.2 9.9 10.6 - 2.00 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------- 16:00 46 1 20 16 (NNE) 65 clear none 17:00 45 0 30 14 (NNE) 199 clear none 18:00 47 2 20 14 (NNE) 69 clear none 19:00 47 2 24 22 (NNE) 68 clear none 20:00 46 3 20 25 (NNE) 61 clear none 21:00 45 5 27 42 (NE) 114 clear none 22:00 45 5 22 24 (NNE) 83 clear none 23:00 46 8 20 29 (NNE) 76 clear none 00:00 46 9 25 22 (NNE) 78 clear none 01:00 49 6 25 17 (NNE) 107 clear none 02:00 50 5 21 20 (NNE) 112 clear none 03:00 50 5 23 17 (NNE) 99 clear none 04:00 51 20 31 14 (NNE) 99 clear none 05:00 51 22 17 25 (NNE) 128 clear none 06:00 51 19 19 14 (NNE) 90 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 > 1u per 0.1 cubic feet. TELESCOPE STATUS Telescope drives operational. Current TCC version: 2.9.1 Current TUI version: TUI 1.4.2