Subject: 3.5m Night Log 20191223
From: cgray@apo.nmsu.edu
Date: Tue, 24 Dec 2019 12:24:57 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, December 23, 2019
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UW08  M.Graham          M.Graham
NM07  C.Churchill       B.Stemock, M.Croom, F.Hasan
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW08  DIS            17:11   00:09
NM07  DIS            00:16   04:52
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW13/R      17:11  00:10    0    0    0    0   7.0  0.0   0    0
NM07/R      00:10  06:54   0.5  1.5   0    0   4.7  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
Well, not a super great night. It was mostly cloudy at sunset and stayed that way for most of the night...when it then become totally cloudy! At least the seeing wasn’t half bad this time, bit it was getting impossible to see standard stars, much less 21 mag galaxies for NM07. Radar was starting to make it's way towards us and, as we weren't getting anything anyway, we closed just before 5am.
During checkout, the left louvers would not open (the right were fine). I opened them manually and they opened fine (I also closed them manually).
Weather forecast is calling for snow tomorrow night. They sat we might get 6 inches!! ...yeah, I've heard that story before. We shall see if it ends up being farce, again.
                    ------- 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
--------------------------------------------------------------------------
 17:40 dcamera    257(  252) -61  65   2.5  4.8  5.3  4.5  3.1   --  1.48
 18:38 dcamera    517(  400) 272  53   2.3  2.3  3.5  2.5  2.4   --  1.53
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    39    18      5   263    (W)    123 mstly cldy   none
     17:00    37    19     11   290  (WNW)    122 mstly cldy   none
     18:00    37    18     13   270    (W)    134 mstly cldy   none
     19:00    36    15     16   262    (W)    139 mstly cldy   none
     20:00    35    15     14   283  (WNW)    193 mstly cldy   none
     21:00    35    15     15   275    (W)    211 mstly cldy   none
     22:00    34    16     12   266    (W)    205 mstly cldy   none
     23:00    36    17     11   256  (WSW)    187 mstly cldy   none
     00:00    35    17     14   251  (WSW)    186 mstly cldy   none
     01:00    36    17     15   266    (W)    193 mstly cldy   none
     02:00    35    17     17   236   (SW)    229   cloudy     none
     03:00    35    18     16   236   (SW)    187   cloudy     none
     04:00    36    20     20   212  (SSW)    279   cloudy     none
     05:00    35    22     23   222   (SW)    327   cloudy     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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