Subject: 3.5m Night Log 20251019
From: ajt@apo.nmsu.edu
Date: Mon, 20 Oct 2025 12:40:00 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Sunday, October 19, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
NM01  M.Prescott        M.Prescott&Class
JH03  N.Zakamska        D.Bizyaev
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
NM01  ECHELLE        18:35   01:08
JH03  ECHELLE        01:08   05:55
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
NM01/O      18:34  01:10    0    0    0    0   6.6  0.0   0    0
JH03/R      01:10  07:03    0    0    0    0   5.2  0.7   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
Restarted dataq at checkout.
Beautiful clear night with 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
--------------------------------------------------------------------------
 19:28 ecamera    404(    4)  50  66   9.9 10.7 10.9 10.3  9.8   ND2  1.26
 01:13 ecamera    461(   -7) 219  47  10.0  9.0  9.6  9.0  9.6   Clear  1.04
 03:06 ecamera    441(  -28)  65  38   9.3  8.8  9.4  8.8  9.5   ND2  1.48
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    55    26     11   215   (SW)    700    clear     none
     17:00    54    24      9   203  (SSW)    748    clear     none
     18:00    52    26     12   207  (SSW)    715    clear     none
     19:00    50    22      8   189    (S)    611    clear     none
     20:00    50    23     13   191    (S)    667    clear     none
     21:00    49    24     14   201  (SSW)    550    clear     none
     22:00    49    25     15   210  (SSW)    688    clear     none
     23:00    49    25     14   209  (SSW)    717    clear     none
     00:00    49    25     14   205  (SSW)    715    clear     none
     01:00    50    23     13   236   (SW)    653    clear     none
     02:00    50    21     13   263    (W)    443    clear     none
     03:00    49    22     21   237  (WSW)    485    clear     none
     04:00    49    23     22   267    (W)    495    clear     none
     05:00    49    22     19   254  (WSW)    364    clear     none
     06:00    49    21     21   251  (WSW)    350    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