Subject: 3.5m Night Log 20251025
From: ajt@apo.nmsu.edu
Date: Sun, 26 Oct 2025 12:56:26 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, October 25, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
OU01  M.Kilic           M.Kilic
JH03  N.Zakamska        D.Bizyaev
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
OU01  TSPEC          18:38   01:10
JH03  ECHELLE        01:13   06:14
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
OU01/R      18:27  01:10    0    0    0    0   4.2  2.5   0    0
JH03/R      01:10  07:08    0    0    0    0   6.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
Restarted dataq a few times, otherwise everything went smoothly, including clear skies all night long. We closed up at twilight.
                    ------- 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
--------------------------------------------------------------------------
 18:51 tcamera    489( 1268)  68  35   6.1  8.7  8.3  8.4  6.5   Ks  1.09
 01:18 ecamera    428( -190) -140  43   6.7  5.7  6.2  5.7  6.4   Clear  0.84
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    45    31     11   358    (N)    454    clear     none
     17:00    46    32      6   333  (NNW)    413    clear     none
     18:00    44    30      2   268    (W)    512    clear     none
     19:00    43    30      6   344  (NNW)    513    clear     none
     20:00    44    24     13     5    (N)    473    clear     none
     21:00    45    23     15    31  (NNE)    471    clear     none
     22:00    43    26      4   343  (NNW)    563    clear     none
     23:00    43    24      8   340  (NNW)    535    clear     none
     00:00    43    23      4   344  (NNW)    457    clear     none
     01:00    44    26     12   308   (NW)    419    clear     none
     02:00    44    27      9   291  (WNW)    426    clear     none
     03:00    44    28      8   264    (W)    345    clear     none
     04:00    43    27     15   287  (WNW)    309    clear     none
     05:00    43    27      6   319   (NW)    268    clear     none
     06:00    43    26     10   321   (NW)    267    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