Subject: 3.5m Night Log 20250802
From: mcmillan@apo.nmsu.edu
Date: Sun,  3 Aug 2025 12:12:06 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, August 02, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
BY03  S.Call            S.Call
OU02  A.Moss            A.Moss
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
BY03  TripleSpec     20:55   00:55
OU02  KOSMOS         01:15   05:25
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
BY03/R      20:09  01:10    0   0.8   0    0   0.2  4.0   0    0
OU02/R      01:10  06:10    0    0    0    0   5.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: R.McMillan
Some rain loomed over us at sunset but never quite arrived, and we were able to open the dome before the end of twilight.  Medium clouds thinned out for a few hours until we had a lovely photometric night with very 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
--------------------------------------------------------------------------
 21:06 tcamera    375( 1662) -30  72  17.9 19.9 19.6 20.3 18.0   Ks  1.17
 01:28 kosmos   460( 1302)  -4  52  17.3 16.7 17.2 16.7 16.9   -  0.78
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    69    51      2   249  (WSW)   1906  ptly cldy   none
     17:00    71    48     11   233   (SW)   1675  ptly cldy   none
     18:00    72    48     10   268    (W)   1887 mstly cldy   none
     19:00    66    47      7   263    (W)   1834   cloudy     none
     20:00    65    45      2   257  (WSW)   1297 mstly cldy   none
     21:00    65    46      5   191    (S)   1427  ptly cldy   none
     22:00    64    47      6   197  (SSW)   1848  ptly cldy   none
     23:00    64    47      8   186    (S)   1772 mstly clr    none
     00:00    64    47     10   192  (SSW)   1925    clear     none
     01:00    63    48      9   184    (S)   2014    clear     none
     02:00    62    48     13   207  (SSW)   2065    clear     none
     03:00    62    48     14   189    (S)   2064    clear     none
     04:00    62    47     11   205  (SSW)   1925 mstly clr    none
     05:00    62    47     13   206  (SSW)   2015 mstly clr    none
     06:00    60    47      9   213  (SSW)   1866 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.
              ----------  TELESCOPE SOFTWARE  ----------
Current TCC version: 1.4.2
Current HUB version: v20171231_01
Current TUI version: 3.1.8