Subject: 3.5m Night Log 20251030
From: tsutherland@apo.nmsu.edu
Date: Fri, 31 Oct 2025 12:44:09 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Thursday, October 30, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UV01  Y.Zhou            Y.Zhou,Class
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UV01  ARCTIC         18:22   00:00
UV01  TRIPLESPEC     00:14   04:04
UV01  ARCTIC         04:17   06:24
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UV01/R      18:22  01:10    0    0    0    0   0.0  6.8   0    0
UV01/R      01:10  07:12    0    0    0    0   5.3  0.7   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: T.Sutherland,R.McMillan
Restarted dataq at start of night.
We had beautiful weather and great seeing all night.
No telescope or instrument problems. Even arcsat behaved itself!
                    ------- 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
--------------------------------------------------------------------------
 19:18 arctic   584( 1325) 106  69  10.2 11.6 11.2 11.3 10.4   SDSS_r  0.69
 19:20 arctic   580( 1317) 106  70  10.5 11.5 11.2 11.3 10.3   J-C_V  0.67
 22:35 arctic   359(  924)  43  61   8.6  7.8  8.4  7.4  8.1   H-Alpha  1.16
 00:20 tcamera    436( 1160)  22  55   8.8  7.9  8.8  7.8  8.6   --  0.86
 04:25 arctic   405(  952)  23  55   7.7  7.3  7.9  7.2  7.7   SDSS_r  0.82
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    53    19      1    33  (NNE)    473    clear     none
     17:00    53    17      0    77  (ENE)    203    clear     none
     18:00    51    17      5   358    (N)    182    clear     none
     19:00    51     7     16    21  (NNE)     66    clear     none
     20:00    48     7     11    77  (ENE)    140    clear     none
     21:00    47    15      4    90    (E)    624    clear     none
     22:00    47    14      5   192  (SSW)    302    clear     none
     23:00    49     9      4   256  (WSW)    143    clear     none
     00:00    49     7      7   272    (W)     86    clear     none
     01:00    46     8      6   323   (NW)    106    clear     none
     02:00    48    11      8   293  (WNW)    126    clear     none
     03:00    48    11      5   269    (W)    160    clear     none
     04:00    47    17      6   269    (W)    397    clear     none
     05:00    47    17      7   271    (W)    514    clear     none
     06:00    47    17      1   263    (W)    441    clear     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