Subject: 3.5m Night Log 20250403 From: dembicky@apo.nmsu.edu Date: Fri, 4 Apr 2025 10:40:08 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Thursday, April 03, 2025 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- NM01 N.Chanover N.Chanover AP02 S.Merkowitz R.McMillan JH04 M.Karmen M.Karmen CU01 C.Murray C.Murray ON-SKY PROG INSTRUMENT START FINISH -------------------------------------------------------------------- NM01 Agile --:-- --:-- AP02 APOLLO --:-- --:-- JH04 KOSMOS --:-- --:-- CU01 KOSMOS --:-- --:-- PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- NM01/R 19:34 21:34 0 2.0 0 0 0.0 0.0 0 0 AP02/R 21:34 22:34 0 1.0 0 0 0.0 0.0 0 0 JH04/R 22:34 01:30 0 2.9 0 0 0.0 0.0 0 0 JH04/R 01:30 06:38 4.6 0.5 0 0 0.0 0.0 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: J.Dembicky clouds with off and on light snow for the first half. Got a little heavier, enough to cover the ground by midnight. I started the snow program at 00:15 as snow was now accumulating on the cars and pavement outside. Power flickers at 00:56 I stopped the snow program at 04:20 when I went up to do fills for the end of the night. At 04:30 we had about 1.5" of new snow and it was coming down at a pretty good clip. I left the pit button out, just int level and control room button in, so if the snow program needs to be run during the day, you don't need to go all the way up to release all the buttons. ------- 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 33 19 20 211 (SSW) 3844 cloudy lt snow 17:00 32 18 11 210 (SSW) 3618 cloudy lt snow 18:00 34 20 14 195 (SSW) 3620 cloudy lt snow 19:00 32 19 12 199 (SSW) 4055 cloudy lt snow 20:00 32 20 15 204 (SSW) 4283 cloudy dust 21:00 32 21 13 235 (SW) 4114 cloudy dust 22:00 31 20 15 223 (SW) 5450 cloudy dust 23:00 28 24 16 200 (SSW) cloudy lt snow 00:00 27 27 12 214 (SW) cloudy snow 01:00 27 27 9 214 (SW) cloudy lt snow 02:00 26 24 5 268 (W) cloudy humid 03:00 25 24 13 291 (WNW) cloudy snow 04:00 25 26 12 257 (WSW) cloudy snow 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