Subject: 3.5m Night Log 20251125
From: ajt@apo.nmsu.edu
Date: Wed, 26 Nov 2025 14:20:10 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, November 25, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UW04  S.Hawley          S.Hawley,L.Hebb
UW03  C.Chandler        M.Frissell,D.Singh,C.Chandler
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW04  ECHELLE        17:14   20:31
Uw04  ECHELLE        21:19   00:05
UW03  ARCTIC         00:09   05:51
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW04/R      17:07  00:10    0  0.8    0    0   2.5  4.6   0    0
UW03/R      00:10  06:35    0    0    0    0   6.4  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
Other than some humidity we had a nice clear night!
Closed up at 20:30 due to high humidity, reopened about an hour later.
No telescope or instrument problems.
                    ------- 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
--------------------------------------------------------------------------
 17:22 ecamera    522(  -30) 252  37   4.8  6.9  6.1  6.4  4.7   ND3  1.31
 21:22 ecamera    500( -365) 306  44   1.9  0.5  1.8  0.4  1.4   Clear  1.62
 00:15 arctic   445(  676) 300  58   1.9  0.6  1.8  0.7  1.4   SDSS_r  0.97
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    42    29      2   222   (SW)    242  ptly cldy   none
     17:00    41    27      6   138   (SE)    237    clear     none
     18:00    38    21     17    79    (E)    154    clear     none
     19:00    35    22     18    74  (ENE)    141    clear     none
     20:00    33    29     15    78  (ENE)           clear    humid
     21:00    32    28     11    85    (E)           clear    humid
     22:00    38    23      4   194  (SSW)    170    clear     none
     23:00    37    22      3   200  (SSW)    144    clear     none
     00:00    36    23      7   183    (S)    173    clear     none
     01:00    35    24      6   186    (S)    211    clear     none
     02:00    35    23      7   180    (S)    179    clear     none
     03:00    36    21      9   184    (S)    190    clear     none
     04:00    34    24      7   186    (S)    224    clear     none
     05:00    32    25      9   185    (S)           clear    humid
     06:00    32    24     12   180    (S)           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.
              ----------  TELESCOPE SOFTWARE  ----------
Current TCC version: 1.4.2
Current HUB version: v20171231_01
Current TUI version: 3.1.8