Subject: 3.5m Night Log 20210429 From: dembicky@apo.nmsu.edu Date: Fri, 30 Apr 2021 10:23:04 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Thursday, April 29, 2021 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- JH03 H.Reggiani H.Reggiani WY01 J.McLane J.McLane NM08 E.Nielsen E.Nielsen ACTUAL PROG INSTRUMENT START FINISH -------------------------------------------------------------------- JH03 ECHELLE --:-- --:-- WY01 TSPEC --:-- --:-- NM08 ECHELLE --:-- --:-- PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- JH03/R 19:52 01:10 3.2 2.1 0 0 0.0 0.0 0 0 WY01/R 01:10 02:40 0 1.5 0 0 0.0 0.0 0 0 NM08/R 02:40 06:08 0 3.5 0 0 0.0 0.0 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: J.Dembicky About 6-8" of snow today and ferocious winds to accompany the snow. We had cloudy skies for about half of the night, partly cloudy the rest, but high humidity all night long. Snow program was ran all night until 04:00. I didn't use the roof heaters as I didn't want to create any ice and the sun will probably do a much better job of melting things during the daytime. The roof should probably be at least checked during the daytime to see what remains. I parked the telescope due south to help melt any remaining snow off the roof. ------- 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 -------------------------------------------------------------------------- ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 32 30 38 74 (ENE) cloudy snow 17:00 32 30 48 72 (ENE) cloudy snow 18:00 32 31 52 71 (ENE) cloudy humid 19:00 32 30 32 79 (E) cloudy humid 20:00 32 30 27 70 (ENE) mstly cldy humid 21:00 33 30 10 132 (SE) ptly cldy humid 22:00 34 29 25 89 (E) ptly cldy humid 23:00 34 28 14 119 (ESE) ptly cldy humid 00:00 33 28 17 92 (E) ptly cldy humid 01:00 34 29 23 74 (ENE) ptly cldy humid 02:00 34 28 4 95 (E) ptly cldy humid 03:00 33 29 10 125 (SE) ptly cldy humid 04:00 32 29 9 109 (ESE) ptly cldy 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