Subject: 3.5m Night Log 20191204 From: trudyk@apo.nmsu.edu Date: Thu, 5 Dec 2019 12:20:06 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Wednesday, December 04, 2019 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- AP01 T.Murphy R.McMillan JH07 N.Dello-Russo A.McKay CU02 J.Keller J.Keller,S.Ryder ACTUAL PROG INSTRUMENT START FINISH -------------------------------------------------------------------- AP01 APOLLO 17:01 17:49 JH07 ECHELLE 21:15 00:08 CU02 ARCTIC 00:12 01:07 PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- AP01/R 17:06 18:06 0 0.2 0 0 0.0 0.8 0 0 JH07/R 18:06 00:10 0 3.2 0 0 0.0 2.9 0 0 CU02/R 00:10 06:42 5.7 0 0 0 0.4 0.5 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: T.Rudyk It was clearing in the evening, but humidity began to spike shortly after sunset. We had to close by 17:47 due to low clouds/high fog and humidity. Humidity began to drop off, and we opened at 21:15. By 01:00 heavy clouds were coming in, and humidity had risen above safe limits again, so we closed. Humidity stayed high, we had fog roll in around 04:00. We gave up at 5:20, not having opened again. ------- 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 -------------------------------------------------------------------------- 17:06 APOLLO 425( 1266) 50 42 3.0 4.8 5.6 4.7 3.3 530 1.80 21:25 ecamera 509( -483) 166 56 2.9 3.3 4.5 3.2 2.9 ND4 1.02 00:17 arctic 516( 580) -32 53 2.7 2.3 3.4 2.9 2.9 CU_VR 1.25 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 43 32 14 270 (W) 64 clear none 17:00 38 32 18 266 (W) ptly cldy none 18:00 37 32 15 269 (W) ptly cldy humid 19:00 37 32 17 267 (W) ptly cldy humid 20:00 37 32 15 265 (W) ptly cldy humid 21:00 38 32 16 276 (W) ptly cldy none 22:00 38 32 11 269 (W) ptly cldy none 23:00 37 31 15 267 (W) 122 ptly cldy none 00:00 37 32 16 268 (W) ptly cldy none 01:00 37 31 17 267 (W) mstly cldy humid 02:00 38 32 17 274 (W) cloudy none 03:00 37 32 17 270 (W) cloudy none 04:00 37 32 21 269 (W) cloudy fog 05:00 37 31 21 271 (W) cloudy fog 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: 1.2.4 Current HUB version: v20171231_01 Current TUI version: 2.6.0