Subject: 3.5m Night Log 20250109 From: tsutherland@apo.nmsu.edu Date: Fri, 10 Jan 2025 11:23:13 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Thursday, January 09, 2025 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- JH05 L.Flagg L.Flagg,C.Gray EN01 B.Ketzeback R.Mcmillan,T.Sutherland ON-SKY PROG INSTRUMENT START FINISH -------------------------------------------------------------------- JH05 TripleSpec --:-- --:-- EN01 X --:-- --:-- PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- JH05/R 17:24 00:10 0 6.8 0 0 0 0 0 0 EN01/R 00:10 06:58 2.8 4.0 0 0 0 0 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: T.Sutherland,R.McMillan High wind and humidity kept us closed all night. Gave up at 3:30am. Ran tests on the arctic shutter. No failure even when dome temp reached just below -10C. Restarted tron the boot off a bad actor from TUI. Kosmos and kcam shutters soft failure at -9C dome temp. Morning fills are done. ------- 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 -------------------------------------------------------------------------- ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 14 11 54 70 (ENE) mstly cldy none 17:00 14 11 40 63 (ENE) cloudy none 18:00 13 11 25 75 (ENE) cloudy humid 19:00 13 9 54 64 (ENE) cloudy humid 20:00 12 9 44 68 (ENE) cloudy humid 21:00 11 8 34 65 (ENE) cloudy humid 22:00 10 7 42 75 (ENE) cloudy humid 23:00 10 6 47 68 (ENE) cloudy humid 00:00 9 6 43 61 (ENE) cloudy humid 01:00 8 3 37 57 (ENE) cloudy humid 02:00 8 1 27 52 (NE) cloudy none 03:00 8 1 35 67 (ENE) cloudy none 04:00 8 -1 25 59 (ENE) cloudy 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: 3.1.5