Subject: 3.5m Night Log 20230105 From: ajt@apo.nmsu.edu Date: Fri, 6 Jan 2023 13:49:14 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Thursday, January 05, 2023 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- JH05 K.Schlaufman K.Schlaufman UW02 P.Yoachim J.Jiang JH01 M.Guolo M.Guolo ON-SKY PROG INSTRUMENT START FINISH -------------------------------------------------------------------- JH05 ECHELLE 17:19 18:17 UW02 ARCTIC --:-- --:-- JH01 KOSMOS 02:45 06:34 PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- JH05/R 17:20 21:25 0 3.1 0 0 0.0 1.0 0 0 UW02/R 21:25 00:10 0 2.8 0 0 0.0 0.0 0 0 JH01/R 00:10 06:58 0 2.6 0 0 0.0 4.2 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: A.Townsend We opened at the start of the night as clouds were starting to get worse, hoping we could observe through them, but had to give up after trying for an hour as the clouds got very thick and radar started getting too close. It was completely overcast until about 02:00, by which time the radar had also cleared up. We opened and were able to observe through the remaining clouds and elevated wind speeds with KOSMOS. There was an alt motion error while the telescope was stationary at 140, 75 when I set inst to KOSMOS, but it recovered fine. Temps about 5C at the start of the night and didn't drop much until a few hours after midnight, and even then only went down to about 3-4C. Humidity was low all night, 20-30%. ------- 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 -------------------------------------------------------------------------- 17:40 ecamera 493( -297) 202 40 37.3 5.2 5.0 5.0 5.2 ND1 1.45 02:56 klow 360( 592) 277 34 37.3 4.5 4.8 4.5 4.9 -- 2.22 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 12 225 (SW) 431 ptly cldy none 17:00 10 255 (WSW) 240 ptly cldy none 18:00 14 233 (SW) 123 cloudy none 19:00 12 212 (SSW) 96 cloudy none 20:00 9 240 (WSW) 100 cloudy none 21:00 9 214 (SW) 94 cloudy none 22:00 13 242 (WSW) 101 cloudy none 23:00 16 260 (W) 138 cloudy none 00:00 21 261 (W) 223 cloudy none 01:00 16 241 (WSW) 205 cloudy none 02:00 19 238 (WSW) 225 ptly cldy none 03:00 26 219 (SW) 403 mstly clr none 04:00 21 222 (SW) 600 mstly cldy none 05:00 21 217 (SW) 561 mstly cldy none 06:00 17 228 (SW) 569 ptly cldy 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: 2.6.0