Subject: 3.5m Night Log 20250320
From: tsutherland@apo.nmsu.edu
Date: Fri, 21 Mar 2025 12:56:36 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Thursday, March 20, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
GS01  D.Michael         M.Shea
UW01  P.Yoachim         D.Meng
NM07  A.Smith           B.Roberson
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
GS01  KOSMOS         21:58   22:45
UW01  KOSMOS         --:--   --:--
NM07  ECHELLE        --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
GS01/R      19:24  01:10   5.0   0    0    0   0.8  0.0   0    0
UW01/R      01:10  03:40   0.3  2.2   0    0    0    0    0    0
NM07/R      03:40  06:57    0   3.3   0    0    0    0    0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: T.Sutherland
Restarted dataq at start of night. Thanks Bill for helping with fixing other dataq issues.
Checked Arctic shutter, it was in fact stuck open, which explains Jack's problem from the other night. I reset it. Took an object exposure to exercise the shutter, and then took another bias and the bias levels are still really low with the UL quad being the darkest.
High dust counts at start of night kept us from opening. Opened just before 10pm but had to close at around 10:45pm because of more dust. Stayed closed the rest of the night. Gave up around 6:35am.
Outside optidew sensor has been stuck at 100% for the entire 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
--------------------------------------------------------------------------
 22:13 klow   375(  814)  99  63   2.3  2.9  3.3  2.8  2.3   --  1.03
              ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    42    -2     15   216   (SW)   4263    clear     dust
     17:00    43    -4     19   203  (SSW)   3554    clear     dust
     18:00    41    -5     13   198  (SSW)   4208    clear     dust
     19:00    38    -5     14   194  (SSW)   5214    clear     dust
     20:00    36    -6     15   184    (S)   4890    clear     dust
     21:00    36    -7     20   206  (SSW)   3497    clear     dust
     22:00    36    -6     15   194  (SSW)   3564    clear     none
     23:00    36    -5     18   207  (SSW)   4517    clear     dust
     00:00    37    -5     15   210  (SSW)   5127    clear     dust
     01:00    37    -5     14   250  (WSW)   4564    clear     dust
     02:00    38    -5     19   263    (W)   5121    clear     dust
     03:00    37    -5     16   263    (W)   5969    clear     dust
     04:00    37    -5     17   274    (W)   6047    clear     dust
     05:00    37    -5     20   301  (WNW)   5409    clear     dust
     06:00    36    -5     15   321   (NW)   4522    clear     dust
     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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