Subject: 3.5m Night Log 20251015 From: tsutherland@apo.nmsu.edu Date: Thu, 16 Oct 2025 12:52:37 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Wednesday, October 15, 2025 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- UW07 S.Tuttle S.Tuttle,Class JH03 N.Zakamska D.Bizyaev ON-SKY PROG INSTRUMENT START FINISH -------------------------------------------------------------------- UW07 ECHELLE 20:45 21:05 JH03 ECHELLE 05:10 07:00 PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- UW07/R 18:38 01:10 4.3 0 1.9 0 0.3 0.0 0 0 JH03/R 01:10 07:00 1.3 2.7 0 0 0 1.8 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: T.Sutherland From 5:45 to 8:30, the tertiary has an amplifier fault. It took a while to figure out how to initialize/start the tert again after stopping it. The tertiary was stopped and homed and had the galils power cycled. The homing took a while because it kept power cycling. Huge thank you to Cary, Russet, and Gordon for the help. The secondary was also homed. Which was an accident on my end. Oops. But we were briefly able to check the pointing after both the sec and tert were homed and it seemed fine. Restarted echelle icc towards the beginning of the night since biases were coming back as all 0s. Most of the night we were closed for the tert problems, then humidity, then radar and clouds. I was able to open for more than a couple minutes just after 5am. Yay! There were a couple clouds, but the humidity finally calmed down, and we got some data. ------- FAILURE LOG ------- FAILURE MODE TIME PROG INSTR TI/SHU START FINISH DESCRIPTION ---------------------------------------------------------------------- UW07 ECHELLE T/H 18:38 20:30 Tertiary amplifier fault ---------------- FOCUS LOG --------------- Time Instrument Focus Az El Temp Strc Prim Sec Air filt FWHM -------------------------------------------------------------------------- 05:17 ecamera 485( 128) 36 59 10.9 11.6 13.9 11.4 11.0 clear 1.16 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 61 44 13 185 (S) 657 mstly clr none 17:00 63 46 14 190 (S) 532 mstly clr none 18:00 58 48 15 155 (SSE) clear none 19:00 55 49 18 149 (SSE) clear humid 20:00 54 49 19 147 (SSE) clear humid 21:00 53 48 21 147 (SSE) clear humid 22:00 52 62 24 143 (SE) ptly cldy humid 23:00 52 49 26 133 (SE) mstly cldy rain 00:00 52 48 24 161 (SSE) cloudy humid 01:00 52 46 19 177 (S) cloudy humid 02:00 53 45 27 210 (SSW) 812 mstly cldy humid 03:00 52 47 24 192 (SSW) mstly cldy none 04:00 52 46 15 188 (S) ptly cldy none 05:00 51 42 13 193 (SSW) mstly clr none 06:00 52 37 18 207 (SSW) 650 mstly clr 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: 3.1.8