Subject: 3.5m Night Log 20250610
From: tsutherland@apo.nmsu.edu
Date: Wed, 11 Jun 2025 12:00:49 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, June 10, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UV04  S.Majewski        J.Davidson,E.Horch
AP01  S.Merkowitz       R.McMillan,T.Sutherland
GS05  T.Henry           J.Davidson,E.Horch
JH01  Z.Rustamkulov     Z.Rustamkulov
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UV04  DSSI           20:45   00:04
AP01  APOLLO         00:07   01:02
GS05  DSSI           01:08   02:10
JH01  KOSMOS         04:15   05:45
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UV04/R      20:20  00:10    0   0.4   0    0   0.0  3.4   0    0
AP01/R      00:10  01:10    0    0    0    0   0.0  1.0   0    0
GS05/R      01:10  03:46    0   1.6   0    0   0.0  1.0   0    0
JH01/R      03:46  05:46    0   0.5   0    0   0.0  1.5   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: T.Sutherland
Omea was acting up at the start of the night. We went without since the camera would not connect after three restarts. See email for errors.
Dataq needed a restart at the beginning of the night.
Apollo flip mirror battery needs replacing. See PR 2247.
Opened at 8:45pm. Radar was everywhere EXCEPT in the county, so we were fine for most of the night. Closed for about two hours due to some suspicious clouds.
                    ------- 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
--------------------------------------------------------------------------
 20:59 dssi   296( 1764)   2  67  13.2 16.4 17.4 16.2 14.6   blue  1.00
 00:27 APOLLO     300( 2013)   9  41  13.3 13.1 13.8 13.2 13.1   --  1.50
 04:33 kosmos   300( 1217)  47  40  12.9 12.8 13.9 12.8 13.0   --  1.80
  ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    59    32     16    43   (NE)    998  ptly cldy   none
     17:00    63    32     12   300  (WNW)   1732  ptly cldy   none
     18:00    60    29      6   245  (WSW)   4095  ptly cldy   dust
     19:00    57    32      1   295  (WNW)   3860  ptly cldy   dust
     20:00    58    32      9   360    (N)   3100 mstly clr    none
     21:00    56    32      9    31  (NNE)   1507 mstly clr    none
     22:00    56    32      7    14  (NNE)   2542 mstly clr    none
     23:00    57    32     16    48   (NE)   1125 mstly clr    none
     00:00    57    32      8    31  (NNE)    924 mstly clr    none
     01:00    58    32     10    30  (NNE)    879  ptly cldy   none
     02:00    58    30     11    21  (NNE)    609 mstly cldy   none
     03:00    55    27     16    64  (ENE)    835 mstly cldy   none
     04:00    56    32     15    70  (ENE)   1003 mstly clr    none
     05:00    55    32     12    54   (NE)   1035 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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