Subject: 3.5m Night Log 20251212 From: dembicky@apo.nmsu.edu Date: Sat, 13 Dec 2025 13:45:45 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Friday, December 12, 2025 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- GS01 M.Crenshaw M.Shea, M.Davis, B. UW04 S.Hawley S.Hawley,P.Skody ON-SKY PROG INSTRUMENT START FINISH -------------------------------------------------------------------- GS01 KOSMOS 17:07 23:57 UW04 ECHELLE 00:03 06:14 PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- GS01/R 17:07 00:10 0 0 0 0 7.0 0.0 0 0 UW04/R 00:10 06:48 0 0 0 0 1.0 5.6 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: J.Dembicky gcam failed at checkout tonight. Another data point for Russet. StartNubs fixed. @23:08 TUI appeared to lock up. No updates in the log window. I logged out and then back in but it took about a minute or so before it re-connected. Not sure what hung, perhaps my internet connection but I didn't have time to check web site access before it resolved itself. No problems and the ThAr cal my observer took at the end of the night was fine. ------- FAILURE LOG ------- FAILURE MODE TIME PROG INSTR TI/SHU START FINISH DESCRIPTION ---------------------------------------------------------------------- ---------------- FOCUS LOG --------------- Time Instrument Focus Az El Temp Strc Prim Sec Air filt FWHM -------------------------------------------------------------------------- 17:45 khigh 400( 977) -82 73 7.6 10.3 9.5 10.6 8.3 -- 1.18 00:06 ecamera 441( -181) 190 69 7.1 6.0 6.8 5.8 6.2 ND1 0.90 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 49 13 3 262 (W) 129 clear none 17:00 47 12 2 342 (NNW) 117 clear none 18:00 45 9 6 348 (NNW) 118 clear none 19:00 46 11 4 354 (N) 170 clear none 20:00 46 9 1 289 (WNW) 148 clear none 21:00 45 9 2 229 (SW) 126 clear none 22:00 46 10 2 232 (SW) 124 clear none 23:00 45 11 6 193 (SSW) 191 clear none 00:00 45 14 6 198 (SSW) 238 clear none 01:00 44 13 6 253 (WSW) 199 clear none 02:00 42 14 8 264 (W) 209 clear none 03:00 44 13 12 317 (NW) 146 clear none 04:00 43 13 10 327 (NNW) 122 clear none 05:00 46 11 10 360 (N) 68 clear none 06:00 45 8 11 336 (NNW) 66 mstly clr 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 SOFTWARE ---------- Current TCC version: 1.4.2 Current HUB version: v20171231_01 Current TUI version: 3.1.8