Subject: 3.5m Night Log 20251031
From: ajt@apo.nmsu.edu
Date: Sat,  1 Nov 2025 13:35:16 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Friday, October 31, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UV01  Y.Zhou            Y.Zhou&Class
AP01  S.Merkowitz       R.McMillan,T.Sutherland
CU02  Y.Notsu           Y.Notsu
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UV01  ECHELLE        18:25   22:28
UV01  EYEPIECE       22:30   00:05
AP01  APOLLO         00:14   01:09
CU02  ARCTIC         01:15   07:03
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UV01/O      18:21  00:10    0    0    0    0   0.0  5.8   0    0
AP01/W      00:10  01:10    0    0    0    0   0.0  1.0   0    0
CU02/R      01:10  07:13    0    0    0    0   4.3  1.8   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
We had a band of clouds come through at sunset, but they cleared up and we clear or mostly clear skies for the rest of the night. Eyepiece observing was great! Around changeover the wind gusts picked up although we were able to stay open, and the seeing got worse.
I had to restart stripchart mac because CPUs were at 100% (az_alt_v.stp had disappeared so that might be the culprit).
At 00:16 we had an internet glitch that affected remote observers, there was a big lag in messages getting through and people had trouble with their connections.
Restarted dataq this morning when it froze.
                    ------- 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
--------------------------------------------------------------------------
 18:39 ecamera    546(  182)  86  69   9.9 11.5 11.0 11.1 10.1   ND4  0.80
 01:23 arctic   408(  983)  82  18   7.7  7.2  7.9  7.1  7.4   ARCTIC_4170  2.25
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    52    19      9   268    (W)   1393 mstly clr    none
     17:00    53    19     16   296  (WNW)    977  ptly cldy   none
     18:00    50    21     10   265    (W)   1185  ptly cldy   none
     19:00    50    23     12   229   (SW)   1456    clear     none
     20:00    50    22     11   261    (W)   1657    clear     none
     21:00    49    21      8   264    (W)   1495    clear     none
     22:00    50    20     11   308   (NW)   1290    clear     none
     23:00    48    20      1   297  (WNW)   1138    clear     none
     00:00    46    20     12   358    (N)   1173    clear     none
     01:00    46    16     18    17  (NNE)    534    clear     none
     02:00    46    15     17    37   (NE)    436    clear     none
     03:00    45    14     16    18  (NNE)    255 mstly clr    none
     04:00    44    13      6    33  (NNE)    210    clear     none
     05:00    43     9     14   346  (NNW)    133    clear     none
     06:00    43     7     24   346  (NNW)    143    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