Subject: 3.5m Night Log 20210111
From: cgray@apo.nmsu.edu
Date: Tue, 12 Jan 2021 13:23:06 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, January 11, 2021
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
BY01S R.Steele          R.Steele
CU03  B.Oppenheimer     B.Semock, M.Croom
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
BY01  DIS            17:25   00:10
CU03  DIS            00:10   05:56
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
BY01/R      17:25  00:10    0    0    0    0   6.8  0.0   0    0
CU03/R      00:10  06:57    0    0    0    0   6.6  0.2   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
We had some light clouds at the beginning of the night with elevated humidity. However, after a few hours, they both went away and we had moderate seeing.
No problems tonight.
                    ------- 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
--------------------------------------------------------------------------
 19:41 dcamera    361( -123)  35  73  -6.1 -5.3 -5.3 -5.6 -6.0   --  1.28
 21:40 dcamera    477(  -48) -56  67  -5.7 -6.2 -5.7 -6.2 -5.8   --  1.08
 23:05 dcamera    485(  -24) 159  30  -6.4 -6.5 -5.8 -6.5 -6.4   --  1.39
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    25    14      3   216   (SW)    321 mstly clr   humid
     17:00    19    14      1   207  (SSW)    404 mstly clr   humid
     18:00    20    14      9    60  (ENE)    330 mstly clr   humid
     19:00    20    14      1    90    (E)        mstly clr   humid
     20:00    22     8     13    70  (ENE)    375 mstly clr    none
     21:00    21     7     14    71  (ENE)    439 mstly clr    none
     22:00    23     1     13    66  (ENE)    340    clear     none
     23:00    20     2     10    48   (NE)    279    clear     none
     00:00    22    -1      6     4    (N)    331    clear     none
     01:00    22    -2      0   151  (SSE)    335    clear     none
     02:00    22    -1     16    78  (ENE)    438    clear     none
     03:00    24    -1     15    72  (ENE)    488    clear     none
     04:00    25    -2     14    69  (ENE)    636    clear     none
     05:00    25    -3      8    84    (E)    521    clear     none
     06:00    24    -4     10    54   (NE)    574    clear     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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