Subject: 3.5m Night Log 20250517 From: dembicky@apo.nmsu.edu Date: Sun, 18 May 2025 12:01:46 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Saturday, May 17, 2025 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- JH02 C.Ingebretsen C.Ingebretsen, B.Bolin UW02 P.Yoachim D.Meng OU02 J.Serna J.Serna ON-SKY PROG INSTRUMENT START FINISH -------------------------------------------------------------------- JH02 ARCTIC 21:45 22:30 UW02 KOSMOS 22:40 01:09 OU02 Echelle 01:11 03:45 OU02 KOSMOS 03:45 05:40 PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- JH02/R 20:06 22:35 1.7 0 0 0 0.8 0.0 0 0 UW02/R 22:35 01:10 0 0 0 0 2.0 0.6 0 0 OU02/R 01:10 05:53 0 0 0 0 0.0 4.7 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: J.Dembicky Dust kept us closed at the start of the night. I saw Alt drives slips on first test slews 66 & 29 down 50 up My ARCSAT user was having issues connecting to the gateway/ARCSAT machine. We had a similiar issue a few weeks back and it seemed to be some sort of internet slow down which I also noticed on ObsA with my web browser. Unfortunately it resolved itself back then before we could figure out the cause. The user was reporting just a blank web page when they tried connecting to local host which was tunneled into arc-gateway. Looks like they were on a Linux machine if that matters any. One of my TUI users also got disconnected around this time as well. Not sure if that was related or not. The ARCSAT user was able to log in about an hour or so later (around 23:00 MST I believe). No other issues the rest of the night. ------- 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 -------------------------------------------------------------------------- 21:53 arctic 321( 1340) 8 75 12.1 13.2 13.8 13.1 12.4 SDSS_r 0.89 22:57 kosmos 346( 1208) -42 70 12.2 12.1 12.7 12.0 12.1 empty 0.90 23:30 kosmos 331( 1178) -4 57 11.5 11.6 12.3 11.4 11.5 empty 0.97 01:21 ecamera 393( 210) -84 43 10.8 10.7 11.4 10.7 10.8 ND2 1.17 03:58 klow 408( 1096) 98 49 8.1 8.1 8.9 7.9 8.1 empty 1.32 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 63 20 26 206 (SSW) 8168 mstly clr dust 17:00 59 16 30 236 (SW) 17879 mstly clr dust 18:00 60 16 35 242 (WSW) 27143 mstly clr dust 19:00 59 6 31 222 (SW) 22790 mstly clr dust 20:00 56 4 21 266 (W) 11761 mstly clr dust 21:00 54 2 16 259 (W) 5019 mstly clr dust 22:00 54 -1 16 266 (W) 3296 ptly cldy none 23:00 54 -1 14 258 (WSW) 2531 ptly cldy none 00:00 53 -2 14 265 (W) 2055 ptly cldy none 01:00 52 -2 16 266 (W) 1670 ptly cldy none 02:00 50 -1 23 264 (W) 1705 mstly clr none 03:00 49 3 27 263 (W) 2068 mstly clr none 04:00 47 4 22 263 (W) 1806 mstly clr none 05:00 47 4 20 260 (W) 1840 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