Subject: 3.5m Night Log 20251201
From: ajt@apo.nmsu.edu
Date: Tue,  2 Dec 2025 11:46:58 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, December 01, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
AP01  S.Merkowitz       R.McMillan
EN01  B.Ketzeback       A.Townsend,R.McMillan
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
AP01  APOLLO         17:06   18:00
EN01  KOSMOS         18:00   02:40
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
AP01/W      17:06  18:06    0    0    0    0   0.0  1.0   0    0
EN01/W      18:06  00:10    0    0    0    0   0.0  6.1   0    0
EN01/W      00:10  06:40   2.5  1.5   0    0   0.0  2.5   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
Engineering tasks:
- Restarted hub and tcc
- Restarted dome mac
- Reset axis controllers
- Zeroed na2 rotator (-0.1)
- Power cycled KOSMOS ieb1 and tested disperser wheel
- Dark current checks on KOSMOS and ARCTIC
- Echelle new ThAr examination and lots of cals taken to exercise icc; no problems!
No telescope or instrument problems.
Morning LN2 fills are done.
                    ------- 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
--------------------------------------------------------------------------
 17:02 APOLLO     525( 1465)  99  32  -0.1  0.8  1.3  0.8 -0.1   530  2.00
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    33    16     14   343  (NNW)    346    clear     none
     17:00    32    15     15   328  (NNW)    322    clear     none
     18:00    33    15     12   351    (N)    325    clear     none
     19:00    31    11      4   285  (WNW)    261    clear     none
     20:00    30     8     13   359    (N)    212    clear     none
     21:00    31     5      4    22  (NNE)    196    clear     none
     22:00    32     8     10   334  (NNW)    270    clear     none
     23:00    31     6     14   319   (NW)    215    clear     none
     00:00    31     8     10   284  (WNW)    273    clear     none
     01:00    31    17     10   279    (W)    335    clear     none
     02:00    32    17     12   284  (WNW)    367 mstly clr    none
     03:00    31    19     11   280    (W)    405   cloudy     none
     04:00    31    19     10   263    (W)    385   cloudy     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