Subject: 3.5m Night Log 20230110
From: mcmillan@apo.nmsu.edu
Date: Wed, 11 Jan 2023 11:16:00 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, January 10, 2023
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
EN01  B.Ketzeback       R.McMillan
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
EN01  DIS            --:--   --:--
EN01  KOSMOS         21:30   03:30
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
EN01/R      17:24  00:10   3.3  0.7   0    0   0.0  2.8   0    0
EN01/R      00:10  06:58    0   3.5   0    0   0.0  3.3   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: R.McMillan
Although the weather was not threatening, thicker clouds at the start and end of the night prevented useful on-sky work.  In the middle part of the night there was some clear sky and some thinner clouds so I did some KOSMOS testing on-sky during that period.  I did have difficulty getting KOSMOS to mount properly, and I was not succesful in using the workaround suggested before Christmas.
At the start of the night I checked the scattered light on DIS (very bad but starting to improve for both blue and red - the speed of improvement will depend on temperature, and may be slow during the winter).  I also worked on the ARCSAT schedule.
                    ------- 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
--------------------------------------------------------------------------
 21:56 kosmos   472(  637) 158  68  10.0  3.6  4.3  3.3  3.4   -  1.36
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00                  8   255  (WSW)    315 mstly cldy   none
     17:00                  9   251  (WSW)    309 mstly cldy   none
     18:00                  9   241  (WSW)    266 mstly cldy   none
     19:00                 13   258  (WSW)    306  ptly cldy   none
     20:00                  9   252  (WSW)    263  ptly cldy   none
     21:00                 11   262    (W)    188 mstly clr    none
     22:00                 14   261    (W)    191    clear     none
     23:00                 14   254  (WSW)    186    clear     none
     00:00                 15   240  (WSW)    281  ptly cldy   none
     01:00                 13   241  (WSW)    354  ptly cldy   none
     02:00                 22   220   (SW)    335  ptly cldy   none
     03:00                 25   209  (SSW)    455 mstly cldy   none
     04:00                 23   242  (WSW)    583 mstly cldy   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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