Subject: 3.5m Night Log 20210911 From: ajt@apo.nmsu.edu Date: Sun, 12 Sep 2021 12:50:07 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Saturday, September 11, 2021 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- AP01 S.Merkowitz R.McMillan NM03 A.Hedlund A.Hedlund CU02 B.Oppenheimer M.Croom ACTUAL PROG INSTRUMENT START FINISH -------------------------------------------------------------------- AP01 APOLLO 19:20 20:21 NM03 ECHELLE 20:27 01:00 CU02 DIS 01:04 05:51 PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- AP01/R 19:23 20:23 0 0 0 0 0.0 1.0 0 0 NM03/R 20:23 01:10 0 0 0 0 2.7 2.1 0 0 CU02/R 01:10 06:37 0 0 0 0 5.4 0.0 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: A.Townsend There were elevated dust counts due to smoke tonight, but the 1-micron counts mostly waffled between 3500 and 4500 and our humidity stayed relatively low all night so we stayed open to very nice clear skies. The CU02 observer finished at the beginning of twilight, and we had no telescope or instrument problems 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 -------------------------------------------------------------------------- 19:24 APOLLO 475( 2302) -19 28 16.3 18.5 18.5 18.0 16.9 530 2.00 20:33 ecamera 349( 260) 149 75 15.4 16.3 16.9 16.2 15.9 ND1 0.95 23:32 ecamera 360( 198) 229 55 15.5 14.6 15.4 14.3 14.6 ND1 0.97 01:12 dcamera 432( 1134) 11 55 13.7 14.2 15.1 14.0 14.3 -- 1.33 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 75 42 12 194 (SSW) 2457 clear none 17:00 69 35 11 256 (WSW) 2928 clear none 18:00 67 35 13 187 (S) 3482 clear dust 19:00 63 30 14 138 (SE) 3926 clear dust 20:00 60 29 17 126 (SE) 4064 clear dust 21:00 59 33 12 124 (SE) 3552 clear dust 22:00 58 35 13 111 (ESE) 3324 clear dust 23:00 60 32 7 86 (E) 3864 clear dust 00:00 60 31 1 27 (NNE) 4337 clear dust 01:00 60 31 1 35 (NE) 3999 clear dust 02:00 58 32 6 329 (NNW) 3843 clear dust 03:00 57 31 8 316 (NW) 3842 clear dust 04:00 59 32 1 326 (NW) 3774 clear dust 05:00 56 33 4 319 (NW) 3728 clear dust 06:00 57 32 5 346 (NNW) 3854 clear dust 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