Subject: 3.5m Night Log 20200102
From: trudyk@apo.nmsu.edu
Date: Fri,  3 Jan 2020 12:02:39 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Thursday, January 02, 2020
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
JH09  N.Dello           A.McKay
CU03  J.Keller          J.Keller
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
JH09  DIS            --:--   --:--
CU03  ARCTIC         --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
JH09/R      17:17  00:10    0   6.9   0    0   0.0  0.0   0    0
CU03/R      00:10  06:57   6.7  0.1   0    0   0.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: T.Rudyk
Heavy snow upon arrival. Snow program was run. Snow persisted until 20:00, but we still had to contend with strong winds and blowing snow even after it "stopped snowing". Humidity also remained high. Winds dropped off around 23:30. A check of the roof revealed snow drifts despite the snow removal program running. With the winds dying down it seemed unlikely that the remaining snow would be blown off. Nonetheless, we continued to run the snow program. Observer advised that we give up at 05:00 and so we did. We did not open. Telescope was left pointing south.
                    ------- 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
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           ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    21    20     12   357    (N)          cloudy     snow
     17:00    21    20     11     9    (N)          cloudy     snow
     18:00    20    19     16    39   (NE)          cloudy     snow
     19:00    21    19     10    64  (ENE)          cloudy     snow
     20:00    21    19     16    72  (ENE)         ptly cldy lt snow
     21:00    20    18     23    71  (ENE)        mstly clr   humid
     22:00    20    18     10    72  (ENE)        mstly clr   humid
     23:00    20    18     16    60  (ENE)        mstly clr   humid
     00:00    20    17     13    61  (ENE)        mstly clr   humid
     01:00    21    17     11    17  (NNE)        mstly clr   humid
     02:00    21    16     19    34   (NE)        mstly clr    none
     03:00    21    15     12    24  (NNE)        mstly clr    none
     04:00    21    14     20    24  (NNE)        mstly clr    none
     05:00    20    12     21    27  (NNE)        mstly clr    none
     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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Current TUI version: 2.6.0