Subject: 3.5m Night Log 20250705
From: cgray@apo.nmsu.edu
Date: Sun,  6 Jul 2025 11:40:58 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, July 05, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
OU01  G.Jewett          G.Jewett, M.kilic, C.Lisse, B.Bolin, C.Ingebretsen
UW10  S.Hawley          L.Hebb
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
OU01  ARCTIC         20:39   22:28
OU01  KOSMOS         22:42   01:10
UW10  ECHELLE        01:14   04:37
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
OU01/R      20:24  01:10    0    0    0    0   0.0  4.8   0    0
UW10/R      01:10  05:53   1.3   0    0    0   2.2  1.2   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
Change of plans for tonight. JH05 talked with OU01 to observe I3/ATLAS during A half. Amazingly, we were able to get data with ARCTIC and Kosmos, though it took a good chunk of time to get KOSMOS properly on target. The skies were clear for most of the night and we had good seeing until the wind shifted to the east. There were storm blowouts that I thought would be straight up storms, but they didn't seem to make it as far as the mountain. The blowouts caused a spike in humidity and we had to close before 5am.
                    ------- 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
--------------------------------------------------------------------------
 21:10 arctic   289( 1717)  45  24  18.0 21.2 21.1 20.4 19.8   sdss-i  1.87
 23:01 kosmos   285( 1435)  19  36  17.5 17.7 18.3 17.3 17.4   --  1.52
 01:24 ecamera    406(  454) 160  73  16.7 16.1 16.8 16.0 16.2   ND1  1.14
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    76    34     12   312   (NW)   1204 mstly clr    none
     17:00    74    34     10   274    (W)   1261 mstly clr    none
     18:00    75    33     10   269    (W)    948 mstly clr    none
     19:00    73    30      8   264    (W)    946 mstly clr    none
     20:00    70    30      3   255  (WSW)   1051    clear     none
     21:00    66    42      7    96    (E)   1837    clear     none
     22:00    63    40     10    86    (E)   1508    clear     none
     23:00    64    37     10    96    (E)    970    clear     none
     00:00    62    37     12    92    (E)    964 mstly clr    none
     01:00    62    44     11    87    (E)   1302    clear     none
     02:00    62    41      8    95    (E)   1169    clear     none
     03:00    59    50      9    92    (E)           clear     none
     04:00    60    50     15   112  (ESE)   1746 mstly clr   humid
     05:00    55    54     21    79    (E)        mstly clr   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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