Subject: 3.5m Night Log 20220316
From: decolib@apo.nmsu.edu
Date: Thu, 17 Mar 2022 11:59:28 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Wednesday, March 16, 2022
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
EN01  B.Ketzeback       D.DeColibus
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
EN01  KOSMOS         19:20   23:30
EN01  KOSMOS         03:20   05:20
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
EN01/W      19:20  07:02    0    0    0    0   0.0 11.7   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: D.DeColibus
A night in which some engineering happened. See separate email for details.
The clouds were pretty bad by 22:00, and since most of the work I was doing didn't require sky anyway, I closed at 23:30.
Clouds dissipated fairly abruptly at 02:00.
We opened up at 03:15.
Clouds came back around 4, and we closed up at 05:20.
Since the majority of the engineering work could be (and was) done off-sky, I didn't mark any scheduled time as lost to weather.
                    ------- 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
--------------------------------------------------------------------------
 03:33 kosmos     0(  298) 107  59   0.7  2.0  4.3  2.5  1.9   --  1.91
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    55     8     19   234   (SW)   1632 mstly clr    none
     17:00    51     0     19   266    (W)   1000 mstly clr    none
     18:00    51    -2     23   267    (W)    978 mstly clr    none
     19:00    48     0     19   252  (WSW)   1046 mstly clr    none
     20:00    48     0     18   256  (WSW)   1021  ptly cldy   none
     21:00    47     1     14   257  (WSW)   1124  ptly cldy   none
     22:00    46     1     14   270    (W)   1440  ptly cldy   none
     23:00    44     1     20   287  (WNW)   1516   cloudy     none
     00:00    43     5     22   266    (W)   1986   cloudy     none
     01:00    41     5     20   268    (W)   1985 mstly cldy   none
     02:00    37     7     21   301  (WNW)   2175 mstly clr    none
     03:00    34    16     12   328  (NNW)   2504 mstly clr    none
     04:00    32    17      7   355    (N)   2312   cloudy     none
     05:00    31    20     14   318   (NW)   2046   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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