Subject: 3.5m Night Log 20251127 From: dembicky@apo.nmsu.edu Date: Fri, 28 Nov 2025 13:38:53 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Thursday, November 27, 2025 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- NM07 W.Roberson W.Roberson, E.Nelson CU06 Z.Berta-Thompson Z.Berta-Thompson ON-SKY PROG INSTRUMENT START FINISH -------------------------------------------------------------------- NM07 ECHELLE 17:06 00:03 CU06 KOSMOS 00:06 06:16 PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- NM07/R 17:06 00:10 0 0 0 0 0.5 6.6 0 0 CU06/R 00:10 06:37 0 0 0 0 6.4 0.0 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: J.Dembicky Still having issues with ObsA loading APO site pages. They looked like they loaded at some point but when I went to do anything on them they would hang. Other computers on site were not having this issue, so it seems something specific to ObsA. We had a lot of clouds but the Echelle was observing bright targets so I just monitored the weather conditions while they observed through the clouds. Cary replace the ThAr lamp in the Echelle today. His first image looked good but his second looked bad. I informed my observers to keep a close eye on their ThAr images and if possible to keep the lamp on and do all their ThAr images (not turn the lamp off between exposures). The observers reported their first 3 images looked fine. Echelle IOL ThAr lamp looked fine at the end of the night. Pesky clouds all night but we never closed. No telescope issues tonight. ------- 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 -------------------------------------------------------------------------- 17:30 ecamera 355( -164) -61 40 7.4 7.7 7.6 7.5 7.2 ND1 1.00 00:26 khigh 700( 989) 173 70 4.9 4.1 4.8 4.2 4.2 -- 1.00 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 42 20 11 147 (SSE) 180 cloudy none 17:00 42 15 7 212 (SSW) 57 cloudy none 18:00 45 -4 10 225 (SW) 57 cloudy none 19:00 45 -11 7 211 (SSW) 52 mstly cldy none 20:00 42 -2 8 183 (S) 135 mstly cldy none 21:00 42 22 8 243 (WSW) 997 mstly cldy none 22:00 40 24 9 202 (SSW) 873 mstly cldy none 23:00 40 26 9 212 (SSW) 871 mstly cldy none 00:00 41 24 10 207 (SSW) 873 mstly cldy none 01:00 41 28 15 230 (SW) 1041 mstly cldy none 02:00 41 32 14 218 (SW) cloudy none 03:00 41 33 12 209 (SSW) mstly cldy none 04:00 40 30 12 227 (SW) ptly cldy none 05:00 40 33 14 227 (SW) ptly cldy none 06:00 39 32 10 242 (WSW) ptly cldy 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