Subject: 3.5m Night Log 20210818 From: ajt@apo.nmsu.edu Date: Thu, 19 Aug 2021 11:43:57 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Wednesday, August 18, 2021 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- WY02 M.Brotherton J.McLane NM03 A.Hedlund A.Hedlund NM05 N.Chanover N.Chanover ACTUAL PROG INSTRUMENT START FINISH -------------------------------------------------------------------- WY02 TSPEC 20:04 20:50 NM03 ECHELLE --:-- --:-- NM05 ARCTIC 02:11 02:49 PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- WY02/R 19:53 21:03 0 0.4 0 0 0.0 0.8 0 0 NM03/R 21:03 01:10 0 4.1 0 0 0.0 0.0 0 0 NM05/R 01:10 06:21 3.1 1.5 0 0 0.0 0.6 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: A.Townsend Opened a few minutes late because of clouds, and letting the last bits of radar from the afternoon storms dissipate. The sky was pretty cloudy but direction of observations was clearer than most of the rest of the sky. TSPEC behaved admirably! Closed while changing instruments and did not reopen as the clouds were low and thick--we got a little bit of rain from them. A little after 2 am, the clouds finally cleared up and we were able to open for a little over half an hour before the humidity became dangerously high. We closed for the rest of the night. ------- 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 -------------------------------------------------------------------------- 01:22 arctic 745( 1349) 74 40 13.1 13.6 14.1 13.5 12.7 SDSS_g 1.02 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 65 57 10 222 (SW) 853 mstly cldy none 17:00 63 53 10 196 (SSW) 806 mstly cldy rain 18:00 59 52 5 280 (W) 1799 mstly cldy none 19:00 58 53 11 211 (SSW) mstly cldy none 20:00 58 54 12 219 (SW) mstly cldy none 21:00 58 53 13 211 (SSW) cloudy none 22:00 57 53 14 206 (SSW) cloudy rain 23:00 57 52 11 238 (WSW) cloudy none 00:00 57 52 11 250 (WSW) cloudy none 01:00 57 51 7 268 (W) mstly cldy none 02:00 56 51 8 271 (W) clear humid 03:00 55 52 11 283 (WNW) clear humid 04:00 55 51 6 276 (W) clear humid 05:00 54 51 7 264 (W) clear humid 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