Subject: 3.5m Night Log 20210115 From: dembicky@apo.nmsu.edu Date: Sat, 16 Jan 2021 14:00:04 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Friday, January 15, 2021 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- UW03 K.Bell K.Bell ACTUAL PROG INSTRUMENT START FINISH -------------------------------------------------------------------- UW03 Agile 17:00 06:40 PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- UW03/R 17:29 06:57 0 0 0 0 10.8 2.7 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: J.Dembicky The dome camera computer over obs1 logged itself out for some reason (back to the windows login screen). It was working fine earlier. The Agile guider seemed happy for the first few hours, then around 23:00 it didn't seem to want to correct the errors well. They would grow until they were too large and then guiding would fail. The only thing I noticed was the instrument was rotated -180 object, but TUI should account for that. My observer informed me that the image appeared about 90 rotated from what he normally saw, but didn't think anything of it at the time. Apparently the Agile rotator rotation became corrupted and was reading wrong. This only took me maybe 2 mins, since I was up in the dome, to do the check/zero and get them on sky again. When I pinned the rotator it read -37 deg, not -89.9. I set the position and all was happy again. Since the observer was looking at eclipses tonight, the rotation didn't affect his science. I did recommend re-taking his flats just to be safe. Guider worked fine the rest of the night. No other issues. ------- 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 -------------------------------------------------------------------------- 18:01 AGILE 580(-1490) 166 42 2.7 3.5 3.9 3.4 3.0 BG40 1.70 23:01 AGILE 530(-1613) 119 57 3.2 2.2 3.2 2.5 3.1 BG40 1.25 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 41 -2 11 12 (NNE) 250 clear none 17:00 41 -4 2 25 (NNE) 227 clear none 18:00 37 -1 16 2 (N) 248 clear none 19:00 39 -2 17 344 (NNW) 226 clear none 20:00 40 0 19 359 (N) 286 clear none 21:00 40 1 14 14 (NNE) 221 clear none 22:00 38 2 17 9 (N) 268 clear none 23:00 38 1 19 20 (NNE) 329 clear none 00:00 36 0 18 14 (NNE) 361 clear none 01:00 43 -4 13 15 (NNE) 211 clear none 02:00 43 -4 10 343 (NNW) 182 clear none 03:00 42 -4 9 2 (N) 160 clear none 04:00 40 -6 10 15 (NNE) 176 clear none 05:00 39 -6 12 25 (NNE) 167 clear none 06:00 37 -5 8 342 (NNW) 158 clear 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