Subject: 3.5m Night Log 20230916
From: cgray@apo.nmsu.edu
Date: Sun, 17 Sep 2023 11:09:08 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, September 16, 2023
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
CU04  B.Oppenheimer     C.Churchill
BY01  M.Joner           B.Boizelle
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
CU04  KOSMOS         22:42   01:00
BY01  ARCTIC         01:10   04:30
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
CU04/R      19:17  01:10   2.5  0.9   0    0   2.5  0.0   0    0
BY01/R      01:10  06:40   2.2   0    0    0   3.3  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
The night started out with storm clouds and virga all around us, which kept us
closed for the first 3ish hours. After that, the humidity would wax and wan with the
clouds. Even so, seeing was good, though I guess I didn't hit the record button for
when I focus kosmos, which was 0.95" at 22:45.
At 4:30am the humidity spiked due to a storm to the west and we closed. Radar than
starting popping up around us and we called it a night at 5am.
                    ------- 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
--------------------------------------------------------------------------
 00:14 arctic   364( 1341)  49  57  12.0 12.2 12.7 11.9 12.0   JC-V  1.07
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    61    50      9   257  (WSW)    850  ptly cldy   none
     17:00    63    50     11   247  (WSW)    696  ptly cldy   none
     18:00    62    50      6   264    (W)    611 mstly cldy   none
     19:00    55    50      3    43   (NE)    648 mstly cldy   none
     20:00    51    50     16    73  (ENE)          cloudy     none
     21:00    52    45     13    75  (ENE)    594   cloudy     none
     22:00    54    45      6    90    (E)    646 mstly cldy   none
     23:00    55    43      6   174    (S)    629 mstly clr    none
     00:00    54    43      2   193  (SSW)    626  ptly cldy   none
     01:00    54    45      4   195  (SSW)    710  ptly cldy   none
     02:00    53    43      1   173    (S)    612 mstly clr    none
     03:00    54    45      1   200  (SSW)    634 mstly clr    none
     04:00    53    47      1   208  (SSW)    759 mstly clr   humid
     05:00    50    48      2   204  (SSW)        mstly clr   humid
     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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