From: Russet McMillan Subject: 3.5m Night Log 20070426 Date: Fri, 27 Apr 2007 05:54:48 -0600 (MDT) Apache Point Observatory 3.5m Telescope Night Log Thursday, April 26, 2007 ACTUAL ASTRONOMER OBSERVER(S) INSTRUMENT START FINISH -------------------------------------------------------------------- Y.Lin Y.Lin SPIcam, DIS 19:50 23:57 T.Murphy R.McMillan APOLLO 00:01 00:55 M.Shin M.Shin,M.Oguri NIC-FPS, DIS 01:06 05:35 INST SCHED(TWILIGHT) WEATH EQUIP OBS DAY NOT USED I/ROW/DN START FINISH D B D B D B USE D B --------------------------------------------------------------------- PU01/R 20:38 00:00 0 0 0 0 0 3.4 0 0 0 DD01/O 00:00 01:00 0 0 0 0 0 1.0 0 0 0 PU03/R 01:00 05:23 0 0 0 0 1.4 3.0 0 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: R.McMillan The night started out photometric with good seeing, and stayed that way despite what the forecast and satellite pictures made us expect. The NA2 guider was checked out and seemed fine during the day. It worked through the first couple of targets, then crashed again. ping na2alta said the host was down, and power-cycling didn't restore it. Jon Brinkmann checked some wires and said the problem had to be somewhere between the int level and the guider itself. The telescope was tracking well, so again I said it wasn't worth it to dismount the instrument, and we kept working without the guider. Some images showed bobbles (wind?) which the guider could have corrected, but we also got some lovely round images down to 0.7 arcsec. Later, I checked and found the guider responsive again. This might be correlated with rotator position; i.e. the guider seems unhappy when the rotator is upside-down. We had FIVE science instruments tonight. Okay, so DIS was a repeat, but it had to be mounted twice! Isn't it nice that our observers are taking advantage of our fast instrument-change capabilities? Well, it's nice except for the running up and down stairs, hauling big lumps of metal around part. APOLLO netted three reflectors with excellent return rates, despite only having a one-hour slot. ------- FAILURE LOG ------- PROG INST FAILURE MODE TIME (SEDFNVOG) TI/SHU START FINISH DESCRIPTION ---------------------------------------------------------------------- UC03 N T/S 20:42 20:48 NA2gdr prob halted tracking ---------------- FOCUS LOG --------------- Time Instrument Focus Az El Temp Strc Prim Sec Air filt FWHM ---------------------------------------------------------------------- 20:25 SPIcam -25(348) 58 54 10.2 11.45 10.44 10.70 10.25 r 0.75 00:07 APOLLO -25 good 01:20 NIC-FPS -35(648) -39 49 9.6 9.54 9.12 9.57 9.66 J 0.68 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------- 16:00 62 20 15 217 (SW) 559 clear none 17:00 59 18 13 268 (W) 625 clear none 18:00 57 17 18 215 (SW) 708 clear none 19:00 54 16 14 218 (SW) 803 clear none 20:00 50 16 12 218 (SW) 803 clear none 21:00 51 16 12 202 (SSW) 878 clear none 22:00 51 15 12 180 (S) 701 clear none 23:00 50 16 8 184 (S) 724 clear none 00:00 50 16 6 187 (S) 767 clear none 01:00 48 15 10 242 (WSW) 719 clear none 02:00 49 18 9 230 (SW) 825 clear none 03:00 49 17 2 249 (WSW) 762 clear none 04:00 49 18 9 325 (NW) 747 clear none 05:00 44 19 6 14 (NNE) 701 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: 2.9.0 Current TUI version: TUI 1.3