Subject: 3.5m Night Log 20230302 From: mcmillan@apo.nmsu.edu Date: Fri, 3 Mar 2023 11:25:55 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Thursday, March 02, 2023 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- EN01 B.Ketzeback R.McMillan ON-SKY PROG INSTRUMENT START FINISH -------------------------------------------------------------------- EN01 DIS --:-- --:-- PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- EN01/R 18:10 06:20 1.7 10.5 0 0 0.0 0.0 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: R.McMillan We had radar approaching at the start of the night, and later on there was snow falling or blowing or both. I ended up running the snow program for a large portion of the night in hopes it might also get some accumulated snow off the roof. I parked facing south. The state radar view stopped updating after 16:20 MST, although it was still possible to check individual stations. The Omea camera also seemed to get stuck, repeatedly showing the same image with a different timestamp attached. So I'm not quite certain when the clouds cleared up, but it didn't really matter since humidity was high until 4 am, and when the humidity dropped I still thought there was too much potential for snow blowing into the dome. I did in-dome tests with DIS, ARCTIC, and Agile, and worked on the Q2 schedule. ------- 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 12 323 (NW) 1791 ptly cldy humid 17:00 14 282 (WNW) 1211 ptly cldy lt snow 18:00 5 315 (NW) 1544 ptly cldy lt snow 19:00 14 308 (NW) ptly cldy lt snow 20:00 13 22 (NNE) ptly cldy lt snow 21:00 4 14 (NNE) ptly cldy lt snow 22:00 18 33 (NNE) ptly cldy humid 23:00 13 25 (NNE) clear humid 00:00 6 45 (NE) clear humid 01:00 13 353 (N) clear humid 02:00 9 335 (NNW) clear humid 03:00 1 173 (S) clear humid 04:00 16 340 (NNW) 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: 2.6.0