Subject: 3.5m Night Log 20200118 From: cgray@apo.nmsu.edu Date: Sun, 19 Jan 2020 14:07:52 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Saturday, January 18, 2020 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- WY01 M.Brotherton J.McLane UW05 K.Bell K.Bell ACTUAL PROG INSTRUMENT START FINISH -------------------------------------------------------------------- WY01 TSPEC 17:31 19:00 UW05 Agile 19:06 22:26 UW05 Agile 22:33 22:54 UW05 Agile 22:59 04:10 UW05 Agile 04:17 04:38 UW05 Agile 04:42 04:54 UW05 Agile 04:58 05:01 UW05 Agile 05:06 06:37 PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- WY01/R 17:31 19:11 0 0 0 0 1.7 0.0 0 0 UW05/R 19:11 06:56 0.2 0.4 0 0 6.8 4.4 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: C.Gray What a beautiful night! We had clear skies nearly all night long (a tiny bit of cloud appeared near dawn but didn't disturb observations). We had sub-arcsecond seeing all night, getting down to 0.7" at one point! The only wrench in the system was agile and it's rotation issues. Thankfully, these issues did not result in freewheeling or the need to zero the rotator. Only an init was needed for each occurrence, but it did result in half an hour of lost time as we had to reslew and fix the offsets for each event. Problems were becoming frequent enough after agile passed rot 60 that we flipped the rotator back 180 (starting a new series at a mount of -105) and there were no further problems. Rotation failures are listed below. It should be noted that less than half of these issues resulted in a motion error; usually we saw the stars start to rotate in the field and/or the tracking and current mount rotation values to be off by more that 0.1 degree. Time rot time lost 22:26 -117 7 22:55 -106 4 04:10 62 7 04:38 68 4 04:54 71 4 05:01 73 5 ------- FAILURE LOG ------- FAILURE MODE TIME PROG INSTR TI/SHU START FINISH DESCRIPTION ---------------------------------------------------------------------- UW05 A I/H 22:26 22:33 Agile rotator stopped UW05 A I/H 22:54 22:59 Agile rotator stopped UW05 A I/H 04:10 04:17 Agile rotator stopped UW05 A I/H 04:38 04:42 Agile rotator stopped UW05 A I/H 04:54 04:58 Agile rotator stopped UW05 A I/H 05:01 05:06 Agile rotator stopped ---------------- FOCUS LOG --------------- Time Instrument Focus Az El Temp Strc Prim Sec Air filt FWHM -------------------------------------------------------------------------- 17:43 tcamera 478( 773) 67 39 3.6 5.8 5.8 5.3 3.8 Ks 0.88 19:16 AGILE 323(-1751) 134 58 3.5 3.7 4.1 3.1 3.1 Bg40 0.83 22:26 AGILE 378(-1772) 119 52 3.7 2.0 3.1 2.2 2.9 Bg40 0.84 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 42 4 7 218 (SW) 68 clear none 17:00 39 -1 6 298 (WNW) 49 clear none 18:00 39 -3 8 308 (NW) 25 clear none 19:00 38 3 6 264 (W) 31 clear none 20:00 38 1 7 285 (WNW) 35 clear none 21:00 38 6 7 322 (NW) 31 clear none 22:00 39 6 10 309 (NW) 39 clear none 23:00 37 13 8 319 (NW) 71 clear none 00:00 37 16 5 262 (W) 61 clear none 01:00 37 21 5 260 (W) 100 clear none 02:00 36 23 5 260 (W) 240 clear none 03:00 36 24 6 263 (W) 263 clear none 04:00 36 24 8 264 (W) 332 clear none 05:00 35 22 7 266 (W) 365 mstly clr none 06:00 36 22 10 267 (W) 358 mstly clr 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: 1.2.4 Current HUB version: v20171231_01 Current TUI version: 2.6.0