Subject: 3.5m Night Log 20210125
From: cgray@apo.nmsu.edu
Date: Tue, 26 Jan 2021 10:14:20 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, January 25, 2021
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UW01  S.Hawley          G.Stefansson
NM02  M.Varakian        M.Varakian
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW01  ARCTIC         --:--   --:--
NM02  ARCTIC         --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW01/R      17:38  00:10   0.0  6.5   0    0    0    0    0    0
NM02/R      00:10  06:53   1.3  5.4   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 again at the beginning of the night.
There was no hope of opening tonight. It looks like we got about an inch of snow during the day but, after that, it was just high humidity for most of the night. Around 3am we got the next wave and it looks like we may get a little accumulation.
No problems with the altitude break 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
--------------------------------------------------------------------------
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    20    18     26   260    (W)          cloudy     fog
     17:00    21    18     23   268    (W)          cloudy    humid
     18:00    20    18     18   254  (WSW)        mstly cldy  humid
     19:00    20    18     21   236   (SW)        mstly cldy  humid
     20:00    20    18     24   204  (SSW)         ptly cldy  humid
     21:00    19    16     25   236   (SW)          cloudy    humid
     22:00    19    15     22   221   (SW)          cloudy    humid
     23:00    20    17     39   218   (SW)          cloudy    humid
     00:00    20    16     35   225   (SW)          cloudy    humid
     01:00    20    16     24   238  (WSW)          cloudy    humid
     02:00    19    15     25   213  (SSW)          cloudy    humid
     03:00    17    17     21   242  (WSW)          cloudy     snow
     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.
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