Subject: 3.5m Night Log 20210317 From: cgray@apo.nmsu.edu Date: Thu, 18 Mar 2021 13:06:07 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Wednesday, March 17, 2021 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- UV01 C.Sarazin M.Sun JH03 K.Schlaufman K.Schlaufman WY01 M.Brotherton J.McLane ACTUAL PROG INSTRUMENT START FINISH -------------------------------------------------------------------- UV01 DIS 19:21 01:04 JH03 ECHELLE 01:10 05:15 WY01 TSPEC 05:32 06:50 PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- UV01/R 19:21 01:10 0 0 0 0 1.8 4.0 0 0 JH03/R 01:10 05:21 0 0 0 0 4.2 0.0 0 0 WY01/R 05:21 07:01 0 0 0 0 1.7 0.0 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: C.Gray We started the afternoon off with an alt error. When I released the breaks and tried to slew the telescope reported "Reverse Software Limit" and the alt was listed as 0 deg. I logged into talk2boxes and set the position to 10 deg (where I thought it was located) but it looks like it was more at 13 deg. We aren't sure why this happened but it may have been accidentally when talk2boxes was accessed during the day by Bill. We were able to get it corrected with no issue and had no further problems. The night was clear (no wind!) and we had great seeing! ------- 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 -------------------------------------------------------------------------- 19:49 dcamera 661( 543) 121 40 1.6 2.1 2.1 2.1 1.8 -- 1.00 21:09 dcamera 521( 365) 92 36 1.7 1.2 1.8 1.1 1.2 -- 1.17 01:13 ecamera 464( -662) 131 44 1.2 0.3 0.9 0.3 0.9 Clear 1.13 05:37 tcamera 418( 565) 219 57 0.8 -0.1 0.5 -0.3 0.1 Ks 0.97 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 36 12 6 1 (N) 516 clear none 17:00 37 11 9 267 (W) 528 clear none 18:00 37 10 12 309 (NW) 437 clear none 19:00 35 11 2 268 (W) 440 clear none 20:00 35 11 11 24 (NNE) 451 clear none 21:00 35 12 5 328 (NNW) 351 clear none 22:00 35 12 3 294 (WNW) 392 clear none 23:00 35 12 9 314 (NW) 463 clear none 00:00 33 11 6 262 (W) 446 clear none 01:00 32 11 7 254 (WSW) 556 clear none 02:00 34 11 11 239 (WSW) 501 clear none 03:00 34 10 10 233 (SW) 491 clear none 04:00 35 9 8 262 (W) 492 mstly clr none 05:00 34 8 8 263 (W) 536 mstly cldy none 06:00 33 8 7 255 (WSW) 632 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