Subject: 3.5m Night Log 20250816 From: ajt@apo.nmsu.edu Date: Sun, 17 Aug 2025 11:41:02 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Saturday, August 16, 2025 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- NM04 T.McQuaid T.McQuaid WY01 M.Moe C.Smith ON-SKY PROG INSTRUMENT START FINISH -------------------------------------------------------------------- NM04 ECHELLE --:-- --:-- WY01 KOSMOS --:-- --:-- PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- NM04/R 19:55 01:10 4.5 0.8 0 0 0.0 0.0 0 0 WY01/R 01:10 06:20 0 5.2 0 0 0.0 0.0 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: A.Townsend All-sky camera and Alcor computer had to be restarted at the start of the night but it's still going this morning. We were completely overcast with some associated radar for most of the night, and even got some light rain. Even though the clouds and radar started clearing, it wasn't quite enough--we gave up around 03:45 due to science constraints. ------- 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 -------------------------------------------------------------------------- ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 65 53 5 201 (SSW) 1072 cloudy none 17:00 65 52 4 241 (WSW) 905 cloudy none 18:00 63 50 5 262 (W) 945 cloudy none 19:00 62 50 1 174 (S) 1002 cloudy none 20:00 60 52 11 111 (ESE) cloudy none 21:00 60 52 15 126 (SE) cloudy none 22:00 60 51 10 151 (SSE) cloudy lt rain 23:00 58 52 10 172 (S) cloudy lt rain 00:00 58 51 11 183 (S) cloudy none 01:00 58 50 10 181 (S) mstly cldy none 02:00 58 50 5 188 (S) mstly cldy none 03:00 57 47 7 197 (SSW) mstly cldy none 04:00 57 46 7 187 (S) mstly cldy none 05:00 55 48 5 195 (SSW) mstly 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