Subject: 3.5m Night Log 20250616
From: ajt@apo.nmsu.edu
Date: Tue, 17 Jun 2025 11:58:36 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, June 16, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UW05  S.Demasi          S.Demasi,S.Anderson
UW01  S.Hawley          L.TovarMendoza
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW05  ARCTIC         --:--   --:--
UW01  ARCTIC         03:52   05:00
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW05/R      20:22  02:00   4.0  1.6   0    0   0.0  0.0   0    0
UW01/R      02:00  05:46    0   1.9   0    0   0.0  1.9   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
NA1 mirror cover petal would not open fully despite multiple attemps at high altitude; I finally got it to open fully at 10 alt (PR 2248 submitted).
NICFPS failed at checkout again, had to reconnect and restart the ics. Dataq plots had also stopped, with PMSS offline. Power cycled PMSS from tron and restarted dataq.
Dust hovering around 6000 counts in 1-micron for most of the night, but it finally dropped and we opened a little before 04:00 and got on sky for the end of the night.
All-sky camera froze around sunset, thank you Cary for coming in to fix it again.
KOSMOS ccd temp start of night 190, end of night 180.
                    ------- 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
--------------------------------------------------------------------------
 04:05 arctic  -100( 1213)  49  39  19.4 19.1 21.7 18.8 18.8   SDSS_z  1.42
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    83    32     12   261    (W)   6291 mstly clr    dust
     17:00    83    33      8   262    (W)   5052 mstly clr    dust
     18:00    78    31      8   262    (W)   3653 mstly clr    dust
     19:00    78    29      9   260    (W)   4406 mstly clr    dust
     20:00    73    28     12   216   (SW)   5466 mstly clr    dust
     21:00    72    32     12   194  (SSW)   5579 mstly clr    dust
     22:00    72    29     15   180    (S)   5784 mstly clr    dust
     23:00    68    38     16   153  (SSE)   5449    clear     dust
     00:00    70    31      8   180    (S)   7497 mstly clr    dust
     01:00    66    38      8   182    (S)   5700 mstly clr    dust
     02:00    65    37      2   176    (S)   5733 mstly clr    none
     03:00    64    33      3   176    (S)   5696    clear     dust
     04:00    67    27      1   203  (SSW)   3450    clear     none
     05:00    67    24     10   296  (WNW)   3351    clear     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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