Date: Tue, 26 Aug 2008 06:14:16 -0600 (MDT) Subject: 3.5m Night Log 20080825 From: "Jack Dembicky" Apache Point Observatory 3.5m Telescope Night Log Monday, August 25, 2008 ACTUAL ASTRONOMER OBSERVER(S) INSTRUMENT START FINISH ------------------------------------------------------------------- D.York D.York DIS 19:45 01:00 C.Churchill J.Evans, L.Klimek SPIcam 01:10 05: INST SCHED(TWILIGHT) WEATH EQUIP OBS DAY NOT USED I/ROW/DN START FINISH D B D B D B USE D B -------------------------------------------------------------------- UC04/R 21:32 01:05 0 0 0 0 4.6 0 0 0 0 NM07/R 01:05 05:39 0 0.3 0.6 0.2 0 3.4 0 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: J. Dembicky Az Velocity Scale 576.1, Was 579.0, changed 577.0 Alt Velocity scale -623.3, Was -615.0, changed -623.0 The Altitude motor current had a odd square wave looking trace when it started tonight. I ran both the alt and az velocity scale sweeps and adjusted the settings accordingly (Alt was a bit off). The dcam worked fine tonight, no lockups, but the gcam was a different story. Multiple lockups all 2nd half (PR appended with my observations). The telescope also seemed to drift in guiding, but this may have been related to the restarts of the nub and guiding during the exposure too. My observer was reporting that about every other of there 840s exposures were streaked. I am pretty sure it was due to the guider locking and me having to restart it during the middle of an exposure (or not catching it really fast). Humidity started rising around 03:00 and finally closed us around 05:20 ------- FAILURE LOG ------- PROG INST FAILURE MODE TIME (SEDFNVOG) TI/SHU START FINISH DESCRIPTION ---------------------------------------------------------------------- NM07 O T/H 01:26 01:41 Rotator servo error. Took multiple inits to finally get it cleared. NM07 G I/S 01:42 02:12 NA2 guider hung. ---------------- FOCUS LOG --------------- Time Instrument Focus Az El Temp Strc Prim Sec Air filt FWHM ----------------------------------------------------------------------- 20:10 DISslit 77(515) 9 57 13.9 17.0 15.2 16.1 14.3 -- 1.14 20:14 NA2gdr 777(22000) 7 57 13.8 16.8 15.2 15.9 14.4 clear 0.94 21:27 DISslit -87(235) -107 53 13.1 14.4 14.1 13.3 13.2 -- 1.31 23:42 DISslit -115(120) -103 36 12.1 12.2 12.5 11.4 11.8 -- 1.36 01:20 SPIcam -35(382) -71 80 11.8 11.7 12.1 11.2 11.6 i' 0.59 01:24 NA2gdr 769(30000) -73 79 11.7 11.6 12.0 11.2 11.5 clear 0.79 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------- 18:00 62 44 2 223 (SW) 780 pt. cldy none 19:00 58 43 10 134 (SE) 596 pt. cldy none 20:00 57 44 14 127 (SE) 784 pt. cldy none 21:00 56 45 15 127 (SE) 1220 mst. clr none 22:00 55 46 17 139 (SE) 1412 mst. clr none 23:00 54 47 18 132 (SE) 1608 mst. clr none 00:00 54 47 20 135 (SE) 1549 clear none 01:00 53 47 21 128 (SE) 1491 clear none 02:00 52 46 16 123 (ESE) 1354 clear none 03:00 53 46 15 129 (SE) 1403 clear none 04:00 52 48 16 142 (SE) 1468 clear humid 05:00 51 48 16 152 (SSE) 1475 clear humid 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 1.4.5