Subject: 3.5m Night Log 20200121
From: trudyk@apo.nmsu.edu
Date: Wed, 22 Jan 2020 11:18:34 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, January 21, 2020
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UW02  S.Hawley          J.Wisniewski
UW07  S.Anderson        S.Anderson
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW02  ARCTIC         --:--   --:--
UW07  DIS            --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW02/R      17:34  01:10    7.6  0    0    0   0.0  0.0   0    0
UW07/R      01:10  06:55    4.1  1.7  0    0   0.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: T.Rudyk
Heavy wet snow falling this afternoon. Ran the snow program starting at 16:00. Snow stopped shortly after sundown with 2-4 inches accumulated on the roof of the dome, and ice on the arrestors.  A check done at 23:00 of the roof revealed the snow had crusted over: so the snow program was stopped, as it could no longer remove snow. Between 2 and 4 inches of crusty snow remain on the roof. The scope was pointed south, and no observing was done.
                    ------- 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    29    26     22   228   (SW)          cloudy     snow
     17:00    29    26     15   241  (WSW)          cloudy   lt snow
     18:00    30    28     16   273    (W)          cloudy     fog
     19:00    30    28      9   291  (WNW)          cloudy     fog
     20:00    30    30     14   294  (WNW)          cloudy     fog
     21:00    31    30     17   328  (NNW)          cloudy     fog
     22:00    32    31     14   329  (NNW)          cloudy     fog
     23:00    32    30     19   338  (NNW)          cloudy     fog
     00:00    32    31      7   356    (N)          cloudy     fog
     01:00    32    30     15   339  (NNW)          cloudy     fog
     02:00    33    29     13   300  (WNW)          cloudy     fog
     03:00    33    28     14   328  (NNW)          cloudy     fog
     04:00    32    28     15   331  (NNW)          cloudy    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: 1.2.4
Current HUB version: v20171231_01
Current TUI version: 2.6.0