Subject: 3.5m Night Log 20210126 From: cgray@apo.nmsu.edu Date: Wed, 27 Jan 2021 11:42:01 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Tuesday, January 26, 2021 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- GS03 D.Gies K.Shepard NM02 M.Varakian M.Varakian WY01 M.Brotherton J.McLane ACTUAL PROG INSTRUMENT START FINISH -------------------------------------------------------------------- GS03 ECHELLE --:-- --:-- NM02 ARCTIC --:-- --:-- WY01 TSPEC --:-- --:-- PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- GS03/R 17:39 00:10 0.0 6.5 0 0 0 0 0 0 NM02/R 00:10 05:12 0.0 5.0 0 0 0 0 0 0 WY01/R 05:12 06:52 0.4 1.2 0 0 0 0 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: C.Gray No observing tonight due to snow on the dome. Skies cleared up a couple hours after sunset but the humidity never let up. And it got to -10C inside the dome, brrr!! Since we weren't able to open, I did some cloudy weather engineering tasks: 1. Zeroed rotator, correction = 0.075 2. Reset axis controllers 3. Checked the rotator to make sure it hadn't drifted after the reset. It didn't and everything looked good. 4. Reset TCC35m 5. Reset hub35m but did NOT check disk space 10. Spun agile around a bunch of times and wasn't able to produce any issues. 12. Made new slit masks for Echelle and DIS I ran the snow program during checkout until midnight when I paused to do the engineering tasks. I started the snow program up again around 2am until I went to bed at 4:30 am. Gusts were 20-30 mph so hopefully that took care of a lot of the snow. The dome is parked in the home position so the LN2 can be lifted to the dome floor. No problems tonight. ------- 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 16 14 23 258 (WSW) cloudy humid 17:00 15 14 22 276 (W) cloudy humid 18:00 14 12 21 267 (W) mstly cldy humid 19:00 14 12 23 254 (WSW) mstly cldy humid 20:00 14 11 16 244 (WSW) mstly cldy humid 21:00 13 11 11 263 (W) ptly cldy humid 22:00 13 11 17 303 (WNW) clear humid 23:00 12 10 12 307 (NW) clear humid 00:00 12 9 14 323 (NW) clear humid 01:00 11 8 10 357 (N) clear humid 02:00 11 8 16 22 (NNE) clear humid 03:00 11 8 17 25 (NNE) clear humid 04:00 11 5 3 2 (N) clear humid 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