Subject: 3.5m Night Log 20210124
From: cgray@apo.nmsu.edu
Date: Mon, 25 Jan 2021 11:19:45 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Sunday, January 24, 2021
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UV02  R.Wilson          R.Wilson
NM02  M.Varakian        M.Varakian
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UV02  Echelle        --:--   --:--
NM02  ARCTIC         --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UV02/R      17:37  00:10   0.0  6.6   0    0    0    0    0    0
NM02/R      00:10  06:53   2.3  4.4   0    0    0    0    0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
Dataq needed to be restarted at checkout.
There was no hope of opening tonight. With the snow, wind, and freezing fog, the best I could do was run the Snow program, which I did until about 9:30 pm when the winds started gusting over 40 mph. While it did snow, it wasn't much and there was no accumulation on the sidewalks.
I parked south to let any snow melt off the dome. I check the altitude after a stop button was engaged and did not observe any sag over the course of the night. The tcc reported alt to be a constant 10.006592 degrees.
                    ------- 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    33    22     30   200  (SSW)    421   cloudy   lt snow
     17:00    28    27     28   244  (WSW)          cloudy     snow
     18:00    26    25     20   262    (W)          cloudy   lt snow
     19:00    24    24     25   257  (WSW)          cloudy     fog
     20:00    22    19     25   256  (WSW)          cloudy     fog
     21:00    21    20     28   277    (W)          cloudy     fog
     22:00    20    20     32   261    (W)          cloudy     fog
     23:00    19    18     26   268    (W)          cloudy     fog
     00:00    19    18     28   256  (WSW)          cloudy     fog
     01:00    18    17     16   278    (W)          cloudy     fog
     02:00    18    17     16   279    (W)          cloudy     fog
     03:00    17    16     11   287  (WNW)          cloudy     fog
     04:00    17    15     19   286  (WNW)          cloudy     fog
     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