Subject: 3.5m Night Log 20210506 From: cgray@apo.nmsu.edu Date: Fri, 7 May 2021 11:34:41 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Thursday, May 06, 2021 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- GS01 D.Michael M.Crenshaw BY01 B.Boizelle B.Boizelle JH05 V.Chandra V.Chandra ACTUAL PROG INSTRUMENT START FINISH -------------------------------------------------------------------- GS01 ARCTIC --:-- --:-- BY01 TSPEC 01:20 02:31 JH05 DIS 02:42 05:20 PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- GS01/R 19:58 01:10 5.2 0.0 0 0 0 0 0 0 BY01/R 01:10 02:40 0.2 0 0 0 1.3 0.0 0 0 JH05/R 02:40 06:02 0 0 0 0 1.6 1.8 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: C.Gray The weather was...frustrating. There was a thunderstorm to the south quickly moving towards us, but the rain never reached site. It kept dying nearby. I was able to open for B half but the seeing was not good. No 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 -------------------------------------------------------------------------- 01:27 tcamera 332( 1065) 211 63 11.4 12.4 12.9 12.4 11.4 MKs 1.97 02:52 dcamera 510( 821) 251 48 11.1 11.3 12.0 11.3 11.2 -- 1.62 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 66 24 10 247 (WSW) 1406 mstly clr none 17:00 64 22 7 216 (SW) 1434 mstly clr none 18:00 63 24 5 240 (WSW) 1471 mstly clr none 19:00 60 29 12 187 (S) 1386 mstly clr none 20:00 55 32 13 115 (ESE) 1455 mstly clr none 21:00 54 32 21 125 (SE) 1432 mstly clr none 22:00 54 32 17 161 (SSE) 1607 ptly cldy none 23:00 53 32 22 133 (SE) 1875 ptly cldy none 00:00 54 30 21 151 (SSE) 1925 mstly clr none 01:00 53 32 21 155 (SSE) 1715 clear none 02:00 53 32 19 158 (SSE) 1724 mstly cldy none 03:00 52 32 23 150 (SSE) 1600 ptly cldy none 04:00 54 32 18 180 (S) 1318 mstly clr none 05:00 54 32 17 198 (SSW) 1095 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