Subject: 3.5m Night Log 20241104
From: dembicky@apo.nmsu.edu
Date: Tue,  5 Nov 2024 12:06:56 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, November 04, 2024
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
JH04  N.Oliveros-Gomez  N.Oliveros-Gomez
CU04  Z.Berta-Thompson  A.Stephens
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
JH04  NICFPS         --:--   --:--
CU04  KOSMOS         --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
JH04/R      17:18  00:10   4.9  1.9   0    0   0.0  0.0   0    0
CU04/R      00:10  06:16   6.1   0    0    0   0.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: J.Dembicky
We got about 1-2 inches of snow today, Fog all day as well so no melting on the roof.  I turned the roof heaters on but we were about at the limit of their effectiveness at -2.7C.  I turned the heaters off around 21:00 as the temps was now -3.4C and they probably weren't really doing much without any sunlight.
Bill moved the LN2 tank for Kosmos over to the side wall.  This works out very nice with lots of room still for KOSMOS, no strian on the umbillical hose, and easy access to the fill port without unchaining the tank from the wall.
I did not zero the NA2 rotator today.  When I took off KOSMOS the pins went in with no problem, which indicates the rotator is fairly well zero'ed where it is.  Engineering is in a few days anyhow so it will be zero'ed then as part of our normal engineering tasks.
Humidity kept us closed all night long.
                    ------- 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    28    28     16   329  (NNW)          cloudy     fog
     17:00    27    27     18   338  (NNW)          cloudy     fog
     18:00    27    27     12   318   (NW)          cloudy     fog
     19:00    27    27     14   329  (NNW)          cloudy     fog
     20:00    27    26      6    34   (NE)        mstly cldy  humid
     21:00    26    25     13   329  (NNW)         ptly cldy  humid
     22:00    25    24      5    16  (NNE)        mstly clr   humid
     23:00    25    24     17     3    (N)         ptly cldy  humid
     00:00    26    26      4   356    (N)          cloudy     fog
     01:00    26    26     12   345  (NNW)          cloudy     fog
     02:00    26    26     17    27  (NNE)        mstly cldy   fog
     03:00    26    25     13    13  (NNE)           clear    humid
     04:00    26    25     20     1    (N)           clear    humid
     05:00    26    25     15   359    (N)           clear    humid
     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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