Subject: 3.5m Night Log 20250721
From: tsutherland@apo.nmsu.edu
Date: Tue, 22 Jul 2025 12:05:56 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, July 21, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
NA01  A.Jaskot          A.Jaskot
WY01  M.Moe             M.Moe
AP01  S.Merkowitz       R.McMillan,T.Sutherland
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
NA01  KOSMOS         --:--   --:--
WY01  KOSMOS         --:--   --:--
AP01  APOLLO         --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
NA01/R      20:18  01:10   4.9   0    0    0    0   0.0  0    0
WY01/R      01:10  05:02   2.3  1.5   0    0    0    0   0    0
AP01/R      05:02  06:02    0   1.0   0    0   0.0   0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: T.Sutherland
Dataq needed restarting twice.
Opened for about 10 minutes at the start of the night, until I went outside to clean off the allsky, and saw lightning.
After I cleaned the all sky with windex, it started getting "bad images" so that was down most of the night. It seems to have fixed itself around 5:30am.
Humidity kept us closed all night. Did some in dome apollo runs but never opened for for than 5 minutes.
                    ------- 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
--------------------------------------------------------------------------
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    66    49     15   224   (SW)    663  ptly cldy   none
     17:00    64    51     11   233   (SW)    685  ptly cldy   none
     18:00    67    51     12   218   (SW)    668  ptly cldy   none
     19:00    62    52     12   212  (SSW)         ptly cldy  humid
     20:00    58    50     10   238  (WSW)         ptly cldy  humid
     21:00    57    51     15   239  (WSW)         ptly cldy  humid
     22:00    56    52      6   244  (WSW)         ptly cldy  humid
     23:00    56    51      7   263    (W)         ptly cldy  humid
     00:00    55    52      9   248  (WSW)         ptly cldy  humid
     01:00    55    52     10   211  (SSW)         ptly cldy  humid
     02:00    55    51     11   232   (SW)        mstly clr   humid
     03:00    54    50      8   231   (SW)        mstly clr   humid
     04:00    54    50      7   214   (SW)        mstly clr   humid
     05:00    53    50      6   189    (S)        mstly clr   humid
     06:00    52    51      8   258  (WSW)        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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