Subject: 3.5m Night Log 20231216
From: ajt@apo.nmsu.edu
Date: Sun, 17 Dec 2023 13:36:01 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, December 16, 2023
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
AP01  S.Merkowitz       R.McMillan
GS01  D.Crenshaw        J.Falcone,M.Shea
CU03  B.Oppenheimer     M.Croom
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
AP01  APOLLO         17:06   18:06
GS01  KOSMOS         18:12   23:48
CU03  KOSMOS         23:50   05:47
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
AP01/R      17:08  18:08    0    0    0    0   0.0  1.0   0    0
GS01/R      18:08  00:10    0    0    0    0   3.0  3.1   0    0
CU03/R      00:10  06:51    0    0    0    0   6.7  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
Thin clouds but decent seeing, and it cleared up during B-half.
GS01 finished up a little early and donated the rest of their time to CU03. We stopped observing at twilight.
No telescope or instrument problems.
                    ------- 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
--------------------------------------------------------------------------
 17:14 APOLLO     430( 1863) -20  39   5.9  7.2  6.5  6.8  6.5   530  1.10
 18:43 kosmos   330(  950) -40  69   4.8  5.8  6.0  5.5  5.4   --  0.90
 00:02 kosmos   380( 1033)  90  51   7.9  6.3  7.2  6.1  7.2   --  0.90
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    45    -3      3   265    (W)     63  ptly cldy   none
     17:00    43    -8      9   317   (NW)     66  ptly cldy   none
     18:00    43    -9     10   329  (NNW)     42  ptly cldy   none
     19:00    39   -12      9   344  (NNW)     56  ptly cldy   none
     20:00    43    -9      7   350    (N)     53  ptly cldy   none
     21:00    43    -8      8   360    (N)     35  ptly cldy   none
     22:00    46    -7      8    35   (NE)     45  ptly cldy   none
     23:00    47    -6      9     9    (N)    111  ptly cldy   none
     00:00    47    -5      8    14  (NNE)    138 mstly clr    none
     01:00    46    -7     10    26  (NNE)    192 mstly clr    none
     02:00    47    -6     10    14  (NNE)    201 mstly clr    none
     03:00    47    -6      7    19  (NNE)    238    clear     none
     04:00    46    -6     16     7    (N)    128    clear     none
     05:00    47    -5     21    21  (NNE)     37    clear     none
     06:00    47    -5     19    24  (NNE)     32    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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