Date: Wed, 6 Oct 2010 07:36:22 -0600 (MDT) Subject: 3.5m Night Log 20101005 From: "Jack Dembicky" Apache Point Observatory 3.5m Telescope Night Log Tuesday October 05, 2010 ACTUAL ASTRONOMER OBSERVER(S) INSTRUMENT START FINISH ------------------------------------------------------------------- W.Bhatti W.Bhatti DIS 18:51 23:25 J.Coughlin J.Coughlin DIS 23:30 01:00 M.Huber M.Huber, S.Gezari DIS 01:00 04:40 SPIcam 05:00 06:42 PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DN START FINISH D B D B D B D B ------------------------------------------------------------------ JH02/R 18:51 23:30 0 0 0 0 4.7 0 0 0 NM06/R 23:30 01:00 0 0 0 0 1.5 0 0 0 JH05/R 01:00 06:52 0 0 0.7 0 4.0 1.2 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: J.Dembicky I cleaned the Az drive surface this afternoon, we went over a few moths and it was pretty dirty. 04:45MDT Switched to SPIcam, telescope was having lots of problems slewing in Alt. Motion error too large when I did a test slew upward, it errored later downward as well. I did lots of ms_dumps ofr the alt drive between 04:50 and 05:05MDT (10:50 - 11:05 UT). I noticed that at the start of almost every slew there is a slip detetected in Alt. The PR Submitted. The drive again halted at 05:30MDT and I didn't catch it for several minutes (I missed the sound queue). ------------- FAILURE LOG -------------- PROG INST FAILURE MODE TIME (STEDFNVOG) TI/SHU START FINISH DESCRIPTION ---------------------------------------------------------------------- JH05 S T/H 04:45 05:05 Alt drive problems JH05 S T/H 05:30 05:50 Alt drive problems. PR Submitted ---------------- FOCUS LOG --------------- Time Instrument Focus Az El Temp Strc Prim Sec Air filt FWHM ----------------------------------------------------------------------- 19:12 dis-slit 293( 455) 14 57 10.1 11.3 11.0 10.9 10.8 -- 1.30 20:39 dis-slit 285( 389) 30 54 10.1 10.1 10.3 10.1 10.1 -- 1.56 01:13 dis-slit 247( 315) 316 55 9.9 9.3 9.7 9.2 9.5 -- 1.46 05:10 SPICAM 237( 533) 23 55 8.7 8.8 9.1 8.9 8.9 r' 1.48 05:13 NA2gdr 397(30397) 22 55 8.8 8.8 9.0 8.8 8.8 clear 1.45 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------- 17:00 52 42 12 152 (SSE) 804 ptly cldy none 18:00 52 43 17 148 (SSE) 925 ptly cldy none 19:00 50 42 19 157 (SSE) 759 clear none 20:00 50 39 19 144 (SE) 771 clear none 21:00 50 35 20 156 (SSE) 854 clear none 22:00 51 34 18 159 (SSE) 869 clear none 23:00 50 39 18 149 (SSE) 1005 clear none 00:00 50 38 14 163 (SSE) 1140 clear none 01:00 50 39 17 137 (SE) 1171 clear none 02:00 50 38 21 154 (SSE) 1065 ptly cldy none 03:00 50 36 16 160 (SSE) 965 mstly clr none 04:00 48 37 16 150 (SSE) 945 ptly cldy none 05:00 48 37 16 169 (S) 879 mstly cldy none 06:00 49 36 15 179 (S) 793 ptly cldy 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: 2.13.0 Current TUI version: 1.8.1