Subject: 3.5m Night Log 20230124
From: ajt@apo.nmsu.edu
Date: Wed, 25 Jan 2023 11:58:07 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, January 24, 2023
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
BY05  B.Boizelle        B.Boizelle
UW02  P.Yoachim         J.Jiang
UW08  C.Chandler        C.Chandler
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
BY05  TSPEC          --:--   --:--
UW02  ARCTIC         --:--   ---:--
UW08  ARCTIC         --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
BY05/R      17:37  21:25   0.3  3.5   0    0   0.0  0.0   0    0
UW02/R      21:25  00:10   2.8  0.0   0    0   0.0  0.0   0    0
UW08/R      00:10  06:54   6.7   0    0    0   0.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
Tonight we had high humidity (>90%) all night, wind speeds higher than our restrictions due to last night's snowstorm, and clouds/fog and snow. We didn't get to open at all.
Started snow program at 21:40 after snow started accumulating on the sidewalk outside and ran it until 04:00; snow continued for most of the rest of the night, or was being blown around a lot even if it wasn't snowing. There's a few inches of new snow in places due to drifting.
Humidity was extremely high all night, Temperatures started in the afternoon around -7C and fell to -10C by 04:00.
No telescope or instrument problems.
                    ------- 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                  7   287  (WNW)          cloudy    humid
     17:00                 13   308   (NW)          cloudy    humid
     18:00                  9   324   (NW)          cloudy    humid
     19:00                  3   322   (NW)          cloudy    humid
     20:00                 12   283  (WNW)          cloudy     snow
     21:00                 16   318   (NW)          cloudy     snow
     22:00                 14   317   (NW)          cloudy     snow
     23:00                 15    34   (NE)          cloudy   lt snow
     00:00                 14   351    (N)          cloudy   lt snow
     01:00                 20   347  (NNW)          cloudy   lt snow
     02:00                 19    13  (NNE)          cloudy     snow
     03:00                 18    17  (NNE)        mstly cldy lt snow
     04:00                 17    11    (N)           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