Subject: 3.5m Night Log 20250822 From: tsutherland@apo.nmsu.edu Date: Sat, 23 Aug 2025 12:17:26 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Friday, August 22, 2025 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- NM02 A.Townsend A.Townsend OU03 G.Garcia G.Garcia ON-SKY PROG INSTRUMENT START FINISH -------------------------------------------------------------------- NM02 ECHELLE 20:05 01:02 OU03 KOSMOS 01:05 05:37 PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- NM02/R 19:48 01:10 0.3 0 0 0 5.1 0.0 0 0 OU03/R 01:10 06:24 0 0 0 0 5.2 0.0 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: T.Sutherland It was a clear and quiet night once the clouds cleared just after sunset! No telescope or instrument problems :) ------- 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 -------------------------------------------------------------------------- 20:14 ecamera 613( 573) -72 72 15.9 18.3 18.2 18.1 16.3 ND1 0.91 22:04 ecamera 450( 269) -93 49 15.0 15.1 15.5 14.5 14.6 ND1 1.49 01:20 kosmos 425( 1134) -63 82 13.6 13.1 13.9 13.1 13.2 -- 0.90 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 65 44 9 312 (NW) 1182 mstly cldy none 17:00 69 46 9 218 (SW) 1072 mstly cldy none 18:00 65 42 7 288 (WNW) 1211 mstly cldy none 19:00 64 43 4 352 (N) 1201 ptly cldy none 20:00 61 43 7 88 (E) 1222 clear none 21:00 60 43 11 87 (E) 1154 clear none 22:00 59 43 7 93 (E) 1162 clear none 23:00 58 44 11 93 (E) 1291 clear none 00:00 57 45 11 89 (E) 1340 clear none 01:00 57 46 11 88 (E) 1555 clear none 02:00 56 45 11 94 (E) 1617 mstly clr none 03:00 56 45 9 90 (E) 1664 clear none 04:00 55 45 10 84 (E) 1576 clear none 05:00 57 45 13 77 (ENE) 1523 clear none 06:00 56 44 17 61 (ENE) 1601 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