Subject: 3.5m Night Log 20160201
From: mcmillan@apo.nmsu.edu
Date: Tue,  2 Feb 2016 11:56:07 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, February 01, 2016
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
A.Larson          A.Larson              ARCTIC         --:--   --:--
T.Thuan           Y.Izotov              DIS            --:--   --:--
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
UW03/R     17:44   00:10   6.4   0    0    0   0.0  0.0   0    0
UV05/R     00:10   06:49   1.4  5.3   0    0   0.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: R.McMillan
We had high humidity all night, high winds for the first half of the night, snow at the beginning and end of the night, a power outage at the beginning and an internet outage at the end.  Opening was never an option.
I did some more tests of dark stability with ARCTIC, and also tested the shutter down to -8.2 C (the outside temperature got down to -11, but with the humidity I didn't want to pull outside air into the dome).  I did not run the snow program because the dome had occasional difficulty moving under generator power, but I did change the dome's orientation to the wind a few times with deliberate slews to minimize drifting on the roof.
                    ------- FAILURE LOG -------
PROG   INST   FAILURE MODE     TIME
    (SEDFNVOG)   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    16    14     39   273    (W)          cloudy   lt snow
     17:00    16    14     30   268    (W)          cloudy   lt snow
     18:00    16    14     26   265    (W)          cloudy     none
     19:00    15    13     32   272    (W)          cloudy     none
     20:00    15    13     31   274    (W)          cloudy     none
     21:00    14    13     29   265    (W)          cloudy     none
     22:00    14    13     25   264    (W)          cloudy     none
     23:00    14    12     25   266    (W)          cloudy     none
     00:00    14    12     17   254  (WSW)          cloudy     none
     01:00    14    11     21   250  (WSW)          cloudy     none
     02:00    14    11     22   268    (W)          cloudy   lt snow
     03:00    14    11     16   268    (W)          cloudy   lt snow
     04:00    14    11     14   263    (W)          cloudy   lt 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.
                          TELESCOPE STATUS
    Telescope drives operational. Current TCC version: 1.2.2
    Current TUI version: 2.5.1