Subject: 3.5m Night Log 20210417 From: cgray@apo.nmsu.edu Date: Sun, 18 Apr 2021 10:29:12 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Saturday, April 17, 2021 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- UW04 K.Bell K.Bell NM01 K.Sanderson K.Sanderson ACTUAL PROG INSTRUMENT START FINISH -------------------------------------------------------------------- UW04 DIS --:-- --:-- NM01 DIS --:-- --:-- PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- UW04/R 19:44 01:10 0.2 5.2 0 0 0 0 0 0 NM01/R 01:10 06:21 5.2 0.0 0 0 0 0 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: C.Gray gcam needed nubs restart during checkout No real hope tonight. Things did clear up at sunset but there was radar just to the north of us and then the humidity spiked. We had freeing fog, cloud, winds, and eventually light snow by 3am. I hung out until 4am. I parked the dome south just in case there is any accumulation, but it doesn't look like there will be. ------- 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 46 25 12 257 (WSW) 1639 ptly cldy none 17:00 44 25 11 257 (WSW) 1275 ptly cldy none 18:00 42 26 13 237 (WSW) 1128 ptly cldy none 19:00 36 25 1 273 (W) 1214 ptly cldy humid 20:00 29 26 13 78 (ENE) 611 mstly clr fog 21:00 28 25 18 68 (ENE) mstly clr fog 22:00 25 24 21 74 (ENE) mstly clr fog 23:00 24 23 21 81 (E) mstly clr humid 00:00 24 21 20 87 (E) 273 mstly clr humid 01:00 24 20 18 80 (E) mstly cldy humid 02:00 23 21 23 75 (ENE) cloudy fog 03:00 23 21 23 76 (ENE) cloudy lt snow 04:00 22 21 26 77 (ENE) cloudy lt 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: 2.6.0