Subject: 3.5m Night Log 20210203 From: decolib@apo.nmsu.edu Date: Thu, 4 Feb 2021 13:38:55 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Wednesday, February 03, 2021 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- CU02 Y.Notsu Y.Notsu ACTUAL PROG INSTRUMENT START FINISH -------------------------------------------------------------------- CU02 ECHELLE 17:49 00:46 CU02 ECHELLE 04:03 06:13 PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- CU02/R 17:47 06:47 0 3.8 0 0 6.3 2.9 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: D.DeColibus Windy conditions. During most of the night, winds were averaging 25-30 mph and gusts to 35. As we spent A half pointed directly away from the wind, we were able to stay open. Unfortunately, the winds were also accompanied by persistent and thick orographic clouds directly overhead. At about 00:45, we closed up as we had not gotten any good photons in a couple hours, the dust had spiked, and we were pointing increasingly into the wind. The clouds very slowly cleared up, and we reopened facing away from the wind at 04:03. Aside from the atrocious seeing, we stayed open until closing up around 06:15. AP01 was originally scheduled to observe tonight from 05:47 to 06:47. However, due to technical issues, they ceded their time to CU02. I have removed AP01 from the 'scheduled' section of the nightlog and added that time (1.0 hr bright time) to CU02. ------- 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 -------------------------------------------------------------------------- 17:58 ecamera 687( -55) -13 65 7.7 8.7 8.6 8.7 8.0 ND2 1.41 04:13 ecamera 537( -399) 128 24 2.8 3.9 4.9 3.8 3.2 Clear 3.13 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 52 24 19 264 (W) 418 ptly cldy none 17:00 47 22 29 264 (W) 620 ptly cldy none 18:00 46 20 31 271 (W) 523 mstly cldy none 19:00 45 21 21 273 (W) 482 mstly cldy none 20:00 44 24 22 265 (W) 497 cloudy none 21:00 43 24 13 257 (WSW) 913 cloudy none 22:00 42 24 18 262 (W) 436 cloudy none 23:00 42 24 28 261 (W) 935 cloudy none 00:00 41 25 19 256 (WSW) 2169 cloudy dust 01:00 40 25 14 276 (W) 2468 cloudy none 02:00 39 25 14 271 (W) 1789 cloudy none 03:00 39 25 22 271 (W) 725 mstly cldy none 04:00 38 27 23 274 (W) 322 ptly cldy none 05:00 36 28 22 282 (WNW) 343 mstly clr none 06:00 35 28 20 284 (WNW) 817 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