Subject: 3.5m Night Log 20210709 From: decolib@apo.nmsu.edu Date: Sat, 10 Jul 2021 12:04:30 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Friday, July 09, 2021 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- BY01 B.Boizelle B.Boizelle FG01 D.Buzasi D.Buzasi UW04 P.Yoachim J.Jiang NM03 A.Hedlund A.Hedlund ACTUAL PROG INSTRUMENT START FINISH -------------------------------------------------------------------- BY01 TripleSpec 20:24 21:21 FG01 ECHELLE 21:33 01:09 UW04 ARCTIC 01:13 03:38 NM03 ECHELLE 03:42 05:46 PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- BY01/R 20:23 21:33 0 0 0 0 1.1 0.1 0 0 FG01/R 21:33 01:10 0 0 0 0 3.6 0.0 0 0 UW04/R 01:10 03:40 0 0 0 0 2.5 0.0 0 0 NM03/R 03:40 05:55 0 0 0 0 2.2 0.0 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: D.DeColibus Some light cloud cover and cirrus moved over starting around 21:00, and persisted through about midnight. The rest of the night was pretty clear. The alt drive threw a motion error at 01:16, slewing from altitude 80 to altitude 51, stopping at 68.3. This was in the western sky, which is where these errors normally happen anyway. The problem did not reoccur, and we had no other issues 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 -------------------------------------------------------------------------- 20:32 tcamera 490( 1652) 198 68 18.3 21.6 20.8 21.4 19.1 Ks 1.11 21:37 ecamera 368( 143) 199 82 18.7 19.9 19.5 19.3 18.6 ND3 1.00 00:31 ecamera 476( 164) -26 27 17.5 17.2 17.7 17.0 17.4 Clear 1.69 01:25 arctic 525( 1289) -120 50 18.2 17.2 17.7 17.0 17.6 SDSS_g 1.12 03:49 ecamera 478( 111) -121 56 17.8 16.7 17.1 16.4 17.1 Clear 1.33 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 69 47 5 175 (S) 674 clear none 17:00 69 50 10 243 (WSW) 611 mstly clr none 18:00 72 46 3 214 (SW) 609 clear none 19:00 69 49 2 282 (WNW) 619 mstly clr none 20:00 66 45 5 251 (WSW) 585 mstly clr none 21:00 65 27 3 258 (WSW) 453 mstly clr none 22:00 63 32 6 354 (N) 451 mstly clr none 23:00 64 31 11 15 (NNE) 549 mstly clr none 00:00 63 31 10 12 (NNE) 707 clear none 01:00 64 31 11 20 (NNE) 653 clear none 02:00 64 31 15 8 (N) 587 clear none 03:00 63 31 13 11 (N) 524 clear none 04:00 64 30 10 7 (N) 466 clear none 05:00 63 31 9 356 (N) 806 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