Subject: 3.5m Night Log 20250722
From: tsutherland@apo.nmsu.edu
Date: Wed, 23 Jul 2025 10:46:45 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, July 22, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UW06  G.Khullar         G.Khullar
JH05  C.Lisse           C.Lisse,C.Ingebretsen
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW06  KOSMOS         --:--   --:--
JH05  ARCTIC         --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW06/R      20:17  01:10   4.9   0    0    0   0.0  0.0   0    0
JH05/R      01:10  06:03   3.4  1.5   0    0   0.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: T.Sutherland
Echelle could not be used by JH01 due to contamination. Their time was taken over by JH05 and arctic was used.
Stayed closed all night due to storms, humidity, and clouds. Gave up around 4:30am.
Kosmos filled alarmingly quickly this morning. I'm not sure if it is actually full or if something is misbehaving.
                    ------- 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    62    50      7   265    (W)    622   cloudy     none
     17:00    60    47      5   261    (W)    576   cloudy   lt rain
     18:00    60    47     10   267    (W)    546   cloudy     none
     19:00    59    50     11   255  (WSW)   2744   cloudy     none
     20:00    54    52     18   214   (SW)          cloudy     rain
     21:00    52    47      6   189    (S)          cloudy     rain
     22:00    53    52      7   280    (W)          cloudy     rain
     23:00    53    51     13   327  (NNW)          cloudy    humid
     00:00    54    50      8   358    (N)          cloudy    humid
     01:00    53    50      6   337  (NNW)          cloudy    humid
     02:00    53    50      6   347  (NNW)          cloudy    humid
     03:00    55    49      8   339  (NNW)          cloudy    humid
     04:00    55    48      5   345  (NNW)          cloudy     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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