From: Russet McMillan Subject: 3.5m Night Log 20040916 Date: Fri, 17 Sep 2004 06:45:01 -0600 (MDT) Apache Point Observatory 3.5m Telescope Night Log Thursday, September 16, 2004 ACTUAL ASTRONOMER OBSERVER(S) INSTRUMENT START FINISH -------------------------------------------------------------------- J.Frieman H.Lin SPIcam 19:30 05:55 INST SCHEDULED WEATH EQUIP OBS DAY NOT USED I/RO/DN START FINISH D B D B D B USE D B --------------------------------------------------------------------- UC03/R 20:01 05:55 0 0 0 0 9.4 0.5 0 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: R.McMillan Clear weather first half with lovely subarcsecond seeing just after twilight, degrading to moderate (1.4 arcsec) when a SE wind kicked in. High clouds after 01:00 helped bring the seeing back down near 1 arcsec again. Careful focus monitoring was required until midnight, but otherwise everything worked perfectly. ------- FAILURE LOG ------- PROG INST FAILURE MODE TIME (SEGDFVO) TI/SHU START FINISH DESCRIPTION ----------------------------------------------------------------------- ---------------- FOCUS LOG --------------- Air/Truss Wind Time Instrument Focus Az El Temp-C Dir MPH filt FWHM --------------------------------------------------------------------- 20:31 SPIcam -100(1682) 135 46 15.9/18.2 205 6 z 0.74 20:33 NA2gdr -1753(35246)135 46 15.6/18.1 193 5 R 0.99 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:01 70 32 14 218 (SW) 568 mstly clr none 17:01 71 31 9 262 (W) 495 mstly clr none 18:01 68 29 7 261 (W) 521 clear none 19:01 65 32 5 265 (W) 624 clear none 20:01 61 32 5 225 (SW) 694 clear none 21:01 62 33 6 180 (S) 720 clear none 22:01 60 30 8 168 (SSE) 587 clear none 23:01 59 38 17 147 (SSE) 961 clear none 00:01 58 38 17 142 (SE) 880 mstly clr none 01:01 57 40 19 141 (SE) 980 ptly cldy none 02:01 57 41 21 135 (SE) 909 ptly cldy none 03:01 58 38 18 163 (SSE) 882 ptly cldy none 04:01 58 40 14 178 (S) 705 ptly cldy none 05:01 58 40 13 180 (S) 684 ptly cldy none 06:01 56 40 12 184 (S) 681 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 Remark version: 2.85b Current TCC version: 2.7.2 Current TUI version: TUI 9.0b4