Subject: 3.5m Night Log 20251001
From: ajt@apo.nmsu.edu
Date: Thu,  2 Oct 2025 13:40:34 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Wednesday, October 01, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UW04  S.Hawley          S.Hawley
CU02  Y.Notsu           Y.Notsu
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW04  ECHELLE        18:58   01:05
CU02  ARCTIC         01:11   06:42
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW04/R      18:56  01:10    0    0    0    0   0.0  6.2   0    0
CU02/R      01:10  06:50    0    0    0    0   4.8  0.8   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
Excellent weather 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
--------------------------------------------------------------------------
 19:11 ecamera    521(  375) -34  56  12.5 16.0 14.8 16.7 13.2   ND3  0.89
 01:18 arctic   397( 1159) 236  62  13.3 12.0 12.6 11.8 12.5   ARCTIC_4170  1.54
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    61    37      4   264    (W)    285    clear     none
     17:00    60    37      6   256  (WSW)    449    clear     none
     18:00    59    35      9   315   (NW)    349    clear     none
     19:00    56    33      6   336  (NNW)    348    clear     none
     20:00    56    31      4   349    (N)    326    clear     none
     21:00    57    30      1   207  (SSW)    271    clear     none
     22:00    56    32      2   187    (S)    333    clear     none
     23:00    55    35      3   187    (S)    360    clear     none
     00:00    56    31      8   178    (S)    352    clear     none
     01:00    55    35      7   188    (S)    598    clear     none
     02:00    56    36      6   192  (SSW)    685    clear     none
     03:00    55    36      5   185    (S)    684    clear     none
     04:00    54    36      4   188    (S)    594    clear     none
     05:00    54    37      5   186    (S)    609    clear     none
     06:00    54    33      5   192  (SSW)    450    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