Subject: 3.5m Night Log 20210815 From: ajt@apo.nmsu.edu Date: Mon, 16 Aug 2021 11:56:41 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Sunday, August 15, 2021 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- NM04 E.Nielsen E.Nielsen,A.Peck,A.Smith,J.Castillo UW04 P.Yoachim J.Jiang JH04 N.Zakamska V.Chandra ACTUAL PROG INSTRUMENT START FINISH -------------------------------------------------------------------- NM04 ECHELLE 23:46 01:04 UW04 ARCTIC --:-- --:-- JH04 DIS --:-- --:-- PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- NM04/R 19:56 01:10 0 3.9 0 0 0.6 0.7 0 0 UW04/R 01:10 03:40 2.5 0 0 0 0.0 0.0 0 0 JH04/R 03:40 06:19 2.6 0 0 0 0.0 0.0 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: A.Townsend High humidity, fog and clouds kept us from opening at the start of the night. Sloan almost disappeared into the white abyss of fog-clouds. Humidity and clouds cleared up enough to open at 23:45, and the NM04 program used the rest of their time. At the switchover we closed up due to the clouds, rising humidity, and the oncoming storm. Fog rolled in again not long after. Though the humidity and clouds lessened, the remnants of the dissipating storm to the north as well as a storm coming up from the south on the radar kept us closed the rest of the night. ------- 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 -------------------------------------------------------------------------- 22:56 ecamera 787( 324) 14 45 14.2 14.4 15.3 13.9 13.9 ND4 0.77 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 59 59 6 257 (WSW) cloudy fog 17:00 59 57 2 223 (SW) mstly cldy fog 18:00 58 56 5 212 (SSW) cloudy fog 19:00 56 55 2 221 (SW) mstly cldy fog 20:00 54 53 2 207 (SSW) mstly cldy fog 21:00 52 46 5 354 (N) mstly cldy humid 22:00 55 53 4 94 (E) mstly cldy humid 23:00 57 55 5 89 (E) 190 mstly clr none 00:00 57 56 4 106 (ESE) 249 mstly clr none 01:00 53 49 2 318 (NW) 276 mstly clr fog 02:00 54 52 8 17 (NNE) ptly cldy humid 03:00 51 51 10 40 (NE) mstly clr humid 04:00 54 53 13 83 (E) 296 mstly clr humid 05:00 55 53 6 87 (E) 245 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: 2.6.0