Subject: 3.5m Night Log 20250308 From: tsutherland@apo.nmsu.edu Date: Sun, 9 Mar 2025 13:24:43 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Saturday, March 08, 2025 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- OU01 G.Jewett A.Moss AP01 S.Merkowitz R.McMillan,B.Ketzeback,N.Colmenares,E.Hoffman,T.Sutherland UW01 P.Yoachim P.Yoachim BY01 S.Call S.Call ON-SKY PROG INSTRUMENT START FINISH -------------------------------------------------------------------- OU01 ARCTIC 19:01 00:05 AP01 APOLLO 00:10 01:49 UW01 KOSMOS 04:22 05:30 BY01 TripleSpec 05:43 06:44 PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- OU01/R 18:15 00:10 0 0.8 0 0 0.0 5.1 0 0 AP01/R 00:10 03:15 0 0 0 0 0.0 2.1 0 0 UW01/R 03:15 05:42 0 0 0 0 0.8 0.7 0 1.0 BY01/R 05:42 07:12 0 0 0 0 1.5 0.0 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: T.Sutherland UW01 was warned in advance about daylight savings time, but still lost an hour on sky. There was no response to emails or phone calls. Some light flurries in the afternoon, but things cleared up soon after the start of the night. Weather was mostly clear with moderate seeing for the majority of the night. There was some humidity, but nothing too outragous. Opened at 7pm and closed at 6:50am since the sky waas too bright to do any more science. Closed briefly around the time switch while waiting for users to log in. No problems tonight :) note: AP01 is only 2.1 hrs not 3.1 hrs due to daylight savings time advancing clock 1hr ahead in the middle of their time. ------- 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 -------------------------------------------------------------------------- 19:16 arctic 380 210 80 -4.9 -3.2 -2.5 -3.2 -4.3 BG40 1.23 22:50 arctic 317( 466) -1 28 -5.5 -5.9 -5.2 -5.9 -5.7 BG40 1.63 00:17 APOLLO 275( 1097) -98 41 -4.8 -5.8 -5.2 -5.6 -5.2 -- 1.30 03:28 kosmos 305( 331) -107 77 -5.1 -5.7 -5.1 -5.5 -5.3 -- 1.00 05:48 tcamera 327( 634) -51 40 -4.5 -5.5 -4.9 -5.2 -4.8 -- 1.97 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 29 10 11 269 (W) 331 mstly cldy snow 17:00 23 19 10 17 (NNE) ptly cldy lt snow 18:00 24 14 8 22 (NNE) clear humid 19:00 23 13 6 357 (N) clear none 20:00 24 8 15 19 (NNE) 152 clear none 21:00 23 12 15 26 (NNE) 126 clear none 22:00 23 14 17 4 (N) clear humid 23:00 22 15 24 20 (NNE) clear humid 00:00 23 15 27 17 (NNE) mstly clr humid 01:00 23 16 22 23 (NNE) mstly clr humid 03:00 23 17 21 13 (NNE) mstly clr humid 04:00 23 17 32 32 (NNE) clear humid 05:00 24 17 25 37 (NE) clear humid 06:00 25 11 20 20 (NNE) 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 SOFTWARE ---------- Current TCC version: 1.4.2 Current HUB version: v20171231_01 Current TUI version: 3.1.8