Subject: 3.5m Night Log 20251020 From: dembicky@apo.nmsu.edu Date: Tue, 21 Oct 2025 13:05:58 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Monday, October 20, 2025 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- NM03 T.McQuaid T.McQuaid UV02 A.Verbiscer A.Verbiscer ON-SKY PROG INSTRUMENT START FINISH -------------------------------------------------------------------- NM03 ECHELLE 18:32 01:05 UV02 ARCTIC 01:09 06:50 PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- NM03/R 18:32 01:10 0 0 0 0 6.6 0.0 0 0 UV02/R 01:10 07:04 0 0 0 0 5.9 0.0 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: J.Dembicky Dataq was frozen tonight, I restarted it. No problems tonight. Nice and clear ------- 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 -------------------------------------------------------------------------- 18:50 ecamera 505( 263) 55 58 12.6 13.9 13.7 13.3 12.8 clear 1.08 01:14 arctic 417( 1152) 136 53 12.1 11.3 12.1 11.2 11.3 clear 0.95 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 57 17 11 285 (WNW) 367 clear none 17:00 59 17 8 268 (W) 305 clear none 18:00 57 15 7 263 (W) 276 clear none 19:00 55 12 11 301 (WNW) 253 clear none 20:00 56 12 13 295 (WNW) 374 clear none 21:00 55 13 9 267 (W) 493 clear none 22:00 54 17 3 239 (WSW) 505 clear none 23:00 55 12 11 311 (NW) 344 clear none 00:00 55 12 14 324 (NW) 372 clear none 01:00 54 13 11 337 (NNW) 363 clear none 02:00 51 14 17 62 (ENE) 429 clear none 03:00 54 14 9 37 (NE) 305 clear none 04:00 52 11 9 338 (NNW) 140 clear none 05:00 53 15 3 343 (NNW) 205 clear none 06:00 49 17 7 3 (N) 251 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: 3.1.8