Subject: 3.5m Night Log 20210217 From: cgray@apo.nmsu.edu Date: Thu, 18 Feb 2021 12:40:29 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Wednesday, February 17, 2021 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- UV02 R.Wilson R.Wilsom GS01 D.Michael B.Meena ACTUAL PROG INSTRUMENT START FINISH -------------------------------------------------------------------- UV02 ARCES --:-- --:-- GS01 ARCTIC --:-- --:-- PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- UV02/R 17:59 00:10 0.6 5.6 0 0 0 0 0 0 GS01/R 00:10 06:35 6.4 0.0 0 0 0 0 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: C.Gray More snow! Just a little in the afternoon/early evening, maybe a quarter inch. But it and the high humidity, clouds, and fog kept us closed all night. I ran the snow program all night but had an issue when I went to park. I had a similar issue to what David reported a couple month back (PR 1998)about the altitude break air continuing to hiss. However, I realized after I parked, I stopped telescope and closed the mirror covers without hitting the stop button. Once I released the stop buttons and initialized the drives everything was find and I was able to put in a break with no issue. ------- 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 20 16 15 272 (W) cloudy snow 17:00 20 15 4 262 (W) cloudy snow 18:00 19 14 9 256 (WSW) mstly cldy lt snow 19:00 19 14 7 343 (NNW) mstly clr humid 20:00 18 15 10 47 (NE) mstly clr humid 21:00 19 11 11 324 (NW) mstly clr humid 22:00 17 14 11 12 (NNE) mstly clr humid 23:00 17 12 5 344 (NNW) mstly cldy humid 00:00 20 13 3 236 (SW) cloudy humid 01:00 18 13 7 203 (SSW) cloudy humid 02:00 15 12 2 97 (E) cloudy humid 03:00 15 14 5 186 (S) mstly clr humid 04:00 17 15 8 225 (SW) cloudy fog 05:00 17 16 6 245 (WSW) cloudy fog 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