Subject: 3.5m Night Log 20250116
From: dembicky@apo.nmsu.edu
Date: Fri, 17 Jan 2025 12:27:56 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Thursday, January 16, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
BY03  M.Joner           M.Joner, B.Boizelle
CU06  Y.Notsu           Y.Notsu
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
BY03  KOSMOS         17:30   22:00
CU06  ARCTIC         --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
BY03/R      17:30  00:10    0   2.2   0    0   2.8  1.7   0    0
CU06/R      00:10  06:56    0   6.8   0    0   0.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: J.Dembicky
We were able to open for a few hours at the start of the night until the clouds moved in around 22:00.  We had a few flurries about an hour later and then clouds, with a fog bank hanging over us at 05:00, when I gave up for the night.
                    ------- 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
--------------------------------------------------------------------------
 18:20 khigh   273(  667)   9  61   2.0  1.9  3.2  2.8  2.2   --  1.30
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    41    25     12   201  (SSW)    658 mstly clr    none
     17:00    38    24      9   212  (SSW)    676 mstly clr    none
     18:00    36    25     13   236   (SW)    862  ptly cldy   none
     19:00    37    27     10   263    (W)        mstly clr    none
     20:00    38    22     20   269    (W)    370 mstly cldy   none
     21:00    37    21     15   237  (WSW)    546 mstly cldy   none
     22:00    35    27     16   239  (WSW)          cloudy     none
     23:00    34    25     12   252  (WSW)          cloudy   lt snow
     00:00    34    26      9   267    (W)          cloudy     none
     01:00    34    25     13   261    (W)          cloudy     none
     02:00    33    24     12   257  (WSW)          cloudy     none
     03:00    32    25     23   265    (W)          cloudy     none
     04:00    31    23     18   263    (W)          cloudy     none
     05:00    29    23     13   260    (W)          cloudy     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: 3.1.5