Subject: 3.5m Night Log 20251116
From: ajt@apo.nmsu.edu
Date: Mon, 17 Nov 2025 13:18:50 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Sunday, November 16, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
NM05  K.Sanderson       K.Sanderson
UW11  B.Benda           B.Benda
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
NM05  KOSMOS         20:25   21:05
UW11  ECHELLE        --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
NM05/R      17:10  00:10   6.5   0    0    0   0.5  0.0   0    0
UW11/R      00:10  06:27   4.1  2.2   0    0   0.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
KOSMOS disperser wheel got stuck during truss cals, and fixed by manually moving into place and doing kosmos status robotics.
We opened up around 20:20 when there seemed to be some patches between the clouds, and were able to focus, but we were unfortunately trying in vain; we didn't get much of anything useful.
I stopped the telescope and closed the mirror covers but kept the dome open for a while, but the wind gusts came up and pushed the telescope to a higher altitude than it was stopped at. I closed the dome, and did some test slews--no problems.
Throughout B-half we had fog blowing through, and were unable to reopen.
                    ------- 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
--------------------------------------------------------------------------
 20:39 kosmos   490(  924) 278  58   6.4  7.1  7.7  7.3  6.4   --  1.03
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    47    34     17   244  (WSW)    556 mstly cldy   none
     17:00    47    36     23   259    (W)    725   cloudy     none
     18:00    45    36     18   252  (WSW)          cloudy     none
     19:00    45    33     20   258  (WSW)    839   cloudy     none
     20:00    45    28     19   261    (W)    886 mstly cldy   none
     21:00    44    31     23   259    (W)   1091   cloudy     none
     22:00    43    32     18   265    (W)    859   cloudy     none
     23:00    42    32     22   260    (W)    816   cloudy     none
     00:00    41    32     25   260    (W)          cloudy     fog
     01:00    40    32     22   265    (W)          cloudy     fog
     02:00    39    32     22   254  (WSW)          cloudy     fog
     03:00    38    32     20   263    (W)        mstly cldy   fog
     04:00    37    32     19   263    (W)        mstly cldy   fog
     05:00    36    31     27   261    (W)        mstly cldy   fog
     06:00    36    32     19   271    (W)        mstly cldy   fog
     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.
              ----------  TELESCOPE SOFTWARE  ----------
Current TCC version: 1.4.2
Current HUB version: v20171231_01
Current TUI version: 3.1.8