Subject: 3.5m Night Log 20231113 From: ajt@apo.nmsu.edu Date: Tue, 14 Nov 2023 12:03:09 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Monday, November 13, 2023 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- UV06 A.Verbiscer A.Verbiscer BY01 D.Stephens D.Stephens+Class ON-SKY PROG INSTRUMENT START FINISH -------------------------------------------------------------------- UV06 ARCTIC 20:18 22:07 BY01 TSPEC --:-- --:-- PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- UV06/R 17:12 00:10 5.1 0.1 0 0 1.8 0.0 0 0 BY01/O 00:10 06:24 6.2 0 0 0 0.0 0.0 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: A.Townsend&C.Gray Foggy at the start of the night, then high humidity. Opened a little after 20:00 when humidity dropped just enough, but had to close back up at 22:00 when the dewpoint started rising again. Not long after, another bank of fog rolled in. Though the fog didn't stay, the humidity was too high for the rest of the night to reopen. The BYU class got a lot of practice in-dome, though, and are all ready for tomorrow! We gave up around 04:30. I restarted the ALCOR computer since the optical all sky camera got frozen this evening. Power flicker at about 21:35, but we stayed on utility power and there was no interruption in telescope operation. No telescope or instrument problems. ------- 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 -------------------------------------------------------------------------- 21:27 arctic 591( 1163) 84 43 1.9 3.4 4.2 3.3 2.2 SDSS_r 1.35 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 38 38 5 168 (SSE) 66 cloudy fog 17:00 38 37 5 103 (ESE) 211 cloudy lt rain 18:00 37 36 13 78 (ENE) ptly cldy humid 19:00 36 34 10 90 (E) clear humid 20:00 36 33 11 112 (ESE) clear humid 21:00 37 33 10 117 (ESE) clear humid 22:00 36 33 4 210 (SSW) 34 cloudy fog 23:00 35 36 3 228 (SW) cloudy fog 00:00 35 36 2 242 (WSW) cloudy lt rain 01:00 34 34 6 185 (S) 260 clear humid 02:00 36 33 3 192 (SSW) 40 clear humid 03:00 35 32 5 258 (WSW) 18 clear humid 04:00 35 34 6 267 (W) 176 clear 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: 3.1.3