Subject: 3.5m Night Log 20240117
From: ajt@apo.nmsu.edu
Date: Thu, 18 Jan 2024 13:59:48 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Wednesday, January 17, 2024
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
OU02  A.Moss            A.Moss
UV01  A.Verbiscer       A.Verbiscer
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
OU02  KOSMOS         17:41   23:50
UV01  ARCTIC         00:05   06:44
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
OU02/R      17:30  00:10    0    0    0    0   0.0  6.7   0    0
UV01/R      00:10  06:56    0    0    0    0   6.3  0.5   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
Lots of clouds until a little about 01:20. We had wind speeds near the closure limits a few times and elevated humidity after it cleared up, but were able to stay open and observe through all of it.
Focus value for khigh is on KOSMOS spectrograph detector, not kcam.
No telescope or instrument problems.
                    ------- 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
--------------------------------------------------------------------------
 18:04 khigh   465(  965) 101  64   3.1  3.2  3.3  3.2  2.9   --  1.16
 00:14 arctic   430(  867)   0  77   1.6  0.9  1.9  1.5  1.7   SDSS_r  1.23
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    38    12     17   303  (WNW)    406  ptly cldy   none
     17:00    38    15     25   296  (WNW)    590  ptly cldy   none
     18:00    38    17     18   279    (W)    490  ptly cldy   none
     19:00    37    15     20   275    (W)    686  ptly cldy   none
     20:00    37    15     19   275    (W)    634  ptly cldy   none
     21:00    36    15     22   281    (W)    463  ptly cldy   none
     22:00    37    19     25   272    (W)    271 mstly cldy   none
     23:00    36    20     23   307   (NW)    250 mstly cldy   none
     00:00    36    22     19   300  (WNW)    218 mstly cldy   none
     01:00    36    25     25   313   (NW)   1213 mstly clr    none
     02:00    34    24     19   298  (WNW)    217 mstly clr    none
     03:00    34    25     21   306   (NW)    172 mstly clr    none
     04:00    34    27     24   298  (WNW)     78 mstly clr    none
     05:00    34    28     10   281    (W)     86 mstly clr    none
     06:00    33    28      9    19  (NNE)     93 mstly clr    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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