Subject: 3.5m Night Log 20211110 From: ajt@apo.nmsu.edu Date: Thu, 11 Nov 2021 14:04:52 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Wednesday, November 10, 2021 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- WY01 C.Kobulnicky E.Cook WY02 M.Brotherton J.McLane UW02 P.Yoachim J.Jiang ON-SKY PROG INSTRUMENT START FINISH -------------------------------------------------------------------- WY01 ECHELLE 17:13 00:08 WY02 TSPEC 00:15 01:28 UW02 ARCTIC 01:50 06:22 PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- WY01/R 17:13 00:10 0 0 0 0 1.1 5.9 0 0 WY02/R 00:10 01:40 0 0 0 0 1.5 0.0 0 0 UW02/R 01:40 06:22 0 0 0 0 4.7 0.0 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: A.Townsend We had a very clear night with mixed seeing due to gusty winds. Echelle pointing required an update with echtilt and images during WY01 started reading out as zeroes after beginning observations. As soon as we noticed this I restarted the echelle ICC program to fix it. Wind gusts in the low 30 mphs affected our "seeing" and flirted with the closure limit but never quite reached it. The ARCTIC filter wheel had trouble switching filters while we were taking twilight flats, but we were able to fix it quickly enough to finish the sequence. ------- 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 -------------------------------------------------------------------------- 17:27 ecamera 432( -127) 241 70 6.1 6.3 6.7 6.1 6.2 ND4 0.99 20:27 ecamera 437( -166) 239 39 5.6 4.9 5.6 4.9 5.1 Clear 1.06 22:26 ecamera 440( -180) 231 25 4.8 4.3 4.9 4.3 4.4 Clear 1.90 00:21 tcamera 480( 1056) 37 57 4.2 3.7 4.3 3.8 3.8 Ks 1.07 01:55 arctic 476( 831) -53 35 3.0 1.8 3.4 2.7 2.8 SDSS_g 1.22 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 45 21 15 355 (N) 686 clear none 17:00 43 19 7 23 (NNE) 626 clear none 18:00 43 19 13 357 (N) 789 clear none 19:00 43 19 11 8 (N) 604 clear none 20:00 42 20 15 4 (N) 621 clear none 21:00 42 19 15 27 (NNE) 600 clear none 22:00 41 18 23 20 (NNE) 589 clear none 23:00 40 19 12 24 (NNE) 504 clear none 00:00 40 19 14 4 (N) 486 clear none 01:00 39 17 28 13 (NNE) 421 clear none 02:00 37 15 20 350 (N) 366 clear none 03:00 36 13 24 5 (N) 417 clear none 04:00 39 10 15 15 (NNE) 799 clear none 05:00 40 9 26 14 (NNE) 544 clear none 06:00 37 9 14 33 (NNE) 807 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