Subject: 3.5m Night Log 20220502
From: dembicky@apo.nmsu.edu
Date: Tue,  3 May 2022 11:17:10 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, May 02, 2022
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
NA01  A.Jaskot          A.Jaskot
JH04  M.Guolo           M.Guolo
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
NA01  KOSMOS         --:--   --:--
JH04  KOSMOS         --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
NA01/R      19:55  01:10   3.3  2.0   0    0    0    0    0    0
JH04/R      01:10  06:05   4.9   0    0    0    0    0    0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: J.Dembicky
Held off on opening tonight due to elevated dust (>5000cts outside).
A rather depressing night with clear skies but dust levels just over our opening limits, per email discussion with Bill earlier today.  The dust did dip below 5000cts for a while and it looked promising for a little while, but alas, dust levels rose and dashed our hopes.
I did allow ARCSAT to open, as we are less stringent on dust with that telescope.  The problem with the 2.5m weather sensor repeatedly caused the shutter to automatically close.  I used the bypass repeatedly to keep the telescope open.  We also needed to restart the software on ARCSAT a couple times tonight as ACP became sluggish.  Restartig software alone seemed to fix the problem, for a while at least.
                    ------- 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    64    12     11   253  (WSW)   5483    clear     dust
     17:00    62    14     27   269    (W)   5492    clear     dust
     18:00    61    12     22   247  (WSW)   5302    clear     dust
     19:00    58    12     17   265    (W)   5049    clear     dust
     20:00    54    11     16   251  (WSW)   5014    clear     dust
     21:00    52    11     14   247  (WSW)   4834    clear     dust
     22:00    52    11     24   248  (WSW)   4984    clear     dust
     23:00    51    12     10   272    (W)   5173    clear     dust
     00:00    50    12      5   274    (W)   5024    clear     dust
     01:00    51    11      5   252  (WSW)   4954    clear     dust
     02:00    51     9      7   198  (SSW)   4758    clear     dust
     03:00    49    12     14   239  (WSW)   4598    clear     dust
     04:00    48    12     12   243  (WSW)   4823    clear     dust
     05:00    48    14     11   244  (WSW)   4961    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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