Subject: 3.5m Night Log 20250225
From: ajt@apo.nmsu.edu
Date: Wed, 26 Feb 2025 12:46:33 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, February 25, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UV05  C.Sarazin         M.Sun
BY05  S.Bahr            S.Bahr
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UV05  ARCTIC         18:06   00:01
BY05  KOSMOS         00:15   05:10
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UV05/R      18:06  00:10    0    0    0    0   6.1  0.0   0    0
BY05/R      00:10  06:26    0    0    0    0   5.7  0.6   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
The last hour of A-half gcam threw an error "No header to finish for gcam" (first instance timestamp 2025-02-26 05:52:38) but it didn't affect guiding or observations at all.
Mostly clear except for a few thin clouds in B-half.
                    ------- 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
--------------------------------------------------------------------------
 18:49 arctic   283( 1144) 276  77   8.7  9.8  9.9  9.0  8.7   SDSS_r  0.85
 19:44 arctic   359( 1165) 144  58   8.7  8.6  9.1  8.1  8.0   SDSS_r  1.00
 00:24 kosmos   340(  995) 122  37   8.3  7.2  7.9  7.1  7.6   --  1.47
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    55    11     12   263    (W)    348    clear     none
     17:00    52    12     10   256  (WSW)    337    clear     none
     18:00    49    12      8   269    (W)    340    clear     none
     19:00    48    10     12   266    (W)    395    clear     none
     20:00    48    10     12   246  (WSW)    680    clear     none
     21:00    47     9     10   263    (W)    645    clear     none
     22:00    47     6     12   265    (W)    524    clear     none
     23:00    47     5     11   262    (W)    532    clear     none
     00:00    46     5     13   262    (W)    435    clear     none
     01:00    46     4      9   245  (WSW)    442 mstly clr    none
     02:00    46     6      9   250  (WSW)    398 mstly clr    none
     03:00    45     6     10   249  (WSW)    393    clear     none
     04:00    47    11     12   293  (WNW)    394    clear     none
     05:00    48    12     15   307   (NW)    424    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