Subject: 3.5m Night Log 20240914 From: dembicky@apo.nmsu.edu Date: Sun, 15 Sep 2024 12:37:21 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Saturday, September 14, 2024 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- OU03 M.Kilic A.Moss BY02 M.Joner M.Joiner, B.Boizelle ON-SKY PROG INSTRUMENT START FINISH -------------------------------------------------------------------- OU03 ARCTIC 20:40 01:06 BY02 KOSMOS 01:20 06:03 PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- OU03/R 19:18 01:10 0 1.4 0 0 0.0 4.5 0 0 BY02/R 01:10 06:39 0 0 0 0 2.8 2.6 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: J.Dembicky We had some precipitation (virga) that I could see in the nearby clouds at sunset. With our current telescope issues, I held off on opening until I was sure it was safe. This delayed us a little over an hour as the clouds moved away. I could not set ARCTIC from 3x3 quad to 2x2 quad, have to change to LL then I can set to 2x2. This may be a known issue. Not a big deal but I just don't remember this issue in the past. Just noting it here for reference. I got a fiducial error in Az around 78 deg on first slew to target after initial slews (drives were not turned off between initial slews and first slew to target. I also saw a couple slips in the initial slew (down) and slew to the initial target. Everything was fine after. -92 Az fiducial error too large at 06:07 while parking. We may have been on a field for a while so that may have caused the error. No problems tonight other than some pesky clouds. ------- 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 -------------------------------------------------------------------------- 20:50 arctic 330( 1541) 209 55 15.4 17.2 18.0 16.8 15.8 BG40 1.35 20:52 NA2gdr 3147(37147) 209 55 15.7 17.0 17.9 16.7 15.6 clear 1.44 01:27 khigh 280( 1299) 269 62 15.0 14.2 14.9 14.2 14.4 -- 0.94 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 74 41 10 261 (W) 1043 mstly cldy none 17:00 61 43 18 126 (SE) 1069 mstly cldy none 18:00 60 43 13 127 (SE) 978 ptly cldy none 19:00 61 42 13 136 (SE) 1032 ptly cldy none 20:00 60 40 16 136 (SE) 1111 mstly clr none 21:00 61 40 16 137 (SE) 1320 clear none 22:00 59 41 16 141 (SE) 1318 clear none 23:00 59 41 14 159 (SSE) 1271 clear none 00:00 60 41 11 164 (SSE) 1396 mstly clr none 01:00 59 41 11 175 (S) 1480 clear none 02:00 58 41 6 126 (SE) 1521 clear none 03:00 61 40 2 205 (SSW) 1582 mstly clr none 04:00 59 42 3 190 (S) 2179 ptly cldy none 05:00 59 43 3 213 (SSW) 2314 ptly cldy none 06:00 57 44 4 187 (S) 1164 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: 3.1.5