Subject: 3.5m Night Log 20230716
From: ajt@apo.nmsu.edu
Date: Mon, 17 Jul 2023 12:29:39 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Sunday, July 16, 2023
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
WY02  M.Moe             M.Moe,N.Patten
NM05  A.Dijeau          A.Dijeau
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
WY02  KOSMOS         20:39   00:44
NM05  KOSMOS         04:21   05:26
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
WY02/R      20:21  01:10  0.6    0    0    0   4.2  0.0   0    0
NM05/R      01:10  05:58  3.2    0    0    0   1.3  0.3   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
Alt motor humming during test slews while sitting at 150, 10.
The sky was nice and clear for most of the night, but unfortunately the dust was a little too high for most of B-half.
Closed due to dust at 00:45, opened back up at about 04:15 when dust came back down below the limit. After that, outside dust counts waffled around 4000 counts but the indoor ones stayed closer to 3000 with the fans in reverse mode.
DIS temps:
19:00 198, 191
00:47 194, 187
04:18 188, 185
05:54 186, 185
                    ------- 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
--------------------------------------------------------------------------
 20:49 kosmos   772( 1922) -18  57  21.5 24.4 22.4 24.4 22.8   --  1.23
 23:17 kosmos   446( 1427)  -2  27  19.5 20.3 20.6 19.8 19.6   --  1.38
 04:29 kosmos   400( 1245) 296  77  19.4 18.2 19.1 18.2 19.1   --  1.00
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    74    49      7   253  (WSW)   3322 mstly clr    none
     17:00    76    49     10   252  (WSW)   2993 mstly clr    none
     18:00    73    45      2   204  (SSW)   2606 mstly clr    none
     19:00    74    44      2   231   (SW)   2293    clear     none
     20:00    71    45      1   228   (SW)   2394    clear     none
     21:00    71    40      1   209  (SSW)   1741    clear     none
     22:00    70    39      4   189    (S)   1751    clear     none
     23:00    67    47     16   137   (SE)   3703    clear     dust
     00:00    67    45     19   137   (SE)   3065    clear     dust
     01:00    65    43     15   129   (SE)   5606    clear     dust
     02:00    63    42     15   136   (SE)   6670    clear     dust
     03:00    62    42      6   169    (S)   7049    clear     dust
     04:00    66    45     10   212  (SSW)   4061    clear     dust
     05:00    66    44     10   187    (S)   4190    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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