Subject: 3.5m Night Log 20200318
From: dembicky@apo.nmsu.edu
Date: Thu, 19 Mar 2020 10:57:47 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Wednesday, March 18, 2020
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UV0   M.Brewer          M.Brewer, H.Lewis, R.Wilson
UV04  C.Sarazin         M.Sun
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UV02  ARCTIC         --:--   --:--
UV04  DIS            --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UV02/R      19:22  01:10   5.8   0    0    0   0.0  0.0   0    0
UV04/R      01:10  06:59   3.5  2.3   0    0   0.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: J.Dembicky
Clouds, humidity, rain, wind (did I say wind I meant WIND!!!  69+ MPH). We even had thundersnow tonight!
We never opened.
00:04 we lost mains power on site, still running on generator power as of 04:50.
Not a lot of snow accumulation outside.  Maybe 1/2", but a layer of ice underneath?  Sunshine today (and above freezing temps should clear the 3.5m enclosure.  I did not run the snow program but we did have near 70 mph winds to blow things off when it was snowing!
We gave up at 04:40.
                    ------- 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    34    32     23   190    (S)          cloudy    humid
     17:00    35    32     27   183    (S)          cloudy     fog
     18:00    35    32     37   192  (SSW)          cloudy     fog
     19:00    35    32     32   202  (SSW)          cloudy     fog
     20:00    34    32     22   191    (S)          cloudy     fog
     21:00    34    32     27   197  (SSW)          cloudy     fog
     22:00    36    32     32   203  (SSW)          cloudy     fog
     23:00    36    32     51   217   (SW)          cloudy     snow
     00:00    35    32     37   232   (SW)          cloudy     snow
     01:00    29    28     36   242  (WSW)          cloudy     fog
     02:00    29    28     32   243  (WSW)          cloudy     fog
     03:00    28    28     29   243  (WSW)          cloudy     fog
     04:00    27    27     30   232   (SW)          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.
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