Subject: 3.5m Night Log 20250820
From: tsutherland@apo.nmsu.edu
Date: Thu, 21 Aug 2025 12:10:18 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Wednesday, August 20, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UW12  E.Bellm           E.Bellm, D.Wang
JH01  P.McCreery        K.Schlaufman,P.McCreery
NM03  A.Peck            A.Abbas,B.Roberson
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW12  NICFPS         20:17   23:25
JH01  ECHELLE        23:29   01:09
NM03  ECHELLE        01:10   05:46
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW12/R      19:51  23:25   0.4   0    0    0   3.1   0    0    0
JH01/R      23:25  01:10    0    0    0    0   1.8  0.0   0    0
NM03/R      01:10  06:22    0    0    0    0   3.5  1.7   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: T.Sutherland
UW12 called in their ToO with nicfps for the first 90 minutes or so of A-half tonight.
Dataq need power cycling at the start of the night.
Restarted the all sky just before sunset, since it was frozen (had to go outside and power cycle).
Once the clouds cleared just after sunset, we were able to get on sky and have a clear and productive night! The humidity was >70% most of the night, but we had pretty good seeing.
                    ------- 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
--------------------------------------------------------------------------
 20:31 NICFPS     594( 1942) 251  60  14.3 18.0 16.8 18.7 15.3   MK-J  1.07
 20:49 NA2gdr 37026(37026) 251  56  14.3 17.3 16.3 16.9 14.9   R  5.05
 23:33 ecamera    337(   75) 208  67  13.9 13.6 13.9 13.2 13.2   clear  0.93
 01:13 ecamera    377(   84) 236  44  12.8 12.7 13.3 12.4 12.6   ND2  0.93
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    65    54      2   231   (SW)        mstly cldy  humid
     17:00    65    50     11    88    (E)   1111 mstly cldy   none
     18:00    63    49     12    52   (NE)   1140 mstly cldy   none
     19:00    61    50      8   113  (ESE)   1172  ptly cldy   none
     20:00    59    50      9    81    (E)        mstly clr   humid
     21:00    58    51      4   103  (ESE)           clear    humid
     22:00    57    50      2   202  (SSW)           clear    humid
     23:00    57    50      1   214   (SW)           clear    humid
     00:00    57    50      1   147  (SSE)           clear    humid
     01:00    56    50      7    94    (E)           clear    humid
     02:00    56    50      8    89    (E)           clear    humid
     03:00    57    49      1   149  (SSE)           clear    humid
     04:00    56    49      0   288  (WNW)           clear    humid
     05:00    53    48      5   356    (N)           clear    humid
     06:00    55    48      8    44   (NE)           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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