Subject: 3.5m Night Log 20250129 From: cgray@apo.nmsu.edu Date: Thu, 30 Jan 2025 12:32:38 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Wednesday, January 29, 2025 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- UW03 A.Heinze A.Heinze NM09 D.Bizyaev D.Bizyaev ON-SKY PROG INSTRUMENT START FINISH -------------------------------------------------------------------- UW03 Echelle 22:48 00:06 NM09 KOSMOS 00:10 02:08 PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- UW03/R 17:42 00:10 4.9 0.3 0 0 1.3 0.0 0 0 NM09/R 00:10 06:51 4.7 0 0 0 2.0 0.0 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: C.Gray and A.Townsend The night started with virga all around us. Winds started picking up but the dust didn't come. Once the clouds rolled out the humidity went up. However, things calmed down enough to open near 11pm. But, then the humidity came back by 2am and we closed. We were not able to reopen. The new kcam shutter worked great!! No problems tonight. ------- 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 -------------------------------------------------------------------------- 22:52 ecamera 383( -630) -76 54 -7.7 -6.8 -6.5 -6.8 -7.5 Clear 1.68 00:26 kosmos 398( 303) 125 68 -8.3 -8.4 -7.7 -8.5 -8.4 -- 0.99 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 27 9 22 266 (W) 864 mstly cldy none 17:00 25 11 22 257 (WSW) 1061 mstly cldy none 18:00 23 9 15 247 (WSW) 938 mstly cldy none 19:00 21 12 18 260 (W) 997 mstly cldy none 20:00 20 13 18 264 (W) mstly cldy none 21:00 19 14 16 274 (W) ptly cldy humid 22:00 18 15 12 284 (WNW) mstly clr humid 23:00 18 12 13 275 (W) clear humid 00:00 17 12 10 292 (WNW) clear humid 01:00 17 12 13 286 (WNW) clear humid 02:00 16 12 11 300 (WNW) mstly clr humid 03:00 16 13 14 295 (WNW) mstly clr humid 04:00 16 13 14 284 (WNW) ptly cldy humid 05:00 15 13 11 265 (W) mstly clr humid 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