Subject: 3.5m Night Log 20250926
From: ajt@apo.nmsu.edu
Date: Sat, 27 Sep 2025 12:02:32 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Friday, September 26, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
BY04  M.Joner           M.Joner,B.Boizelle
GS04  S.Lepine          E.Galligan,C.Gray
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
BY04  TSPEC          19:21   22:53
GS04  ECHELLE        --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
BY04/R      19:02  01:10   2.3  0.3   0    0   1.4  2.1   0    0
GS04/R      01:10  06:47   5.6   0    0    0   0.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
All-sky camera restarted (with usb) at start of night and then again shortly after, then it ran the rest of the night.
We delayed opening by a few minutes due to a storm just east of us, and then had to close up again after a few hours when the big storm coming at us from the southwest started getting too close. It was cloudy all night but for the first part of the night they were thin enough that we were able to observe through them. The second half of the night we got some rain!
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
--------------------------------------------------------------------------
 19:31 tcamera    426( 1513) 127  57  12.6 15.6 15.0 15.7 13.1   Ks  0.95
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    62    44     11   248  (WSW)    397  ptly cldy   none
     17:00    59    43     10   252  (WSW)    428  ptly cldy   none
     18:00    58    43      7   261    (W)    413  ptly cldy   none
     19:00    56    40      5   277    (W)    379  ptly cldy   none
     20:00    55    41      6   338  (NNW)    361  ptly cldy   none
     21:00    55    42      7   327  (NNW)    477  ptly cldy   none
     22:00    54    43      1   246  (WSW)    406  ptly cldy   none
     23:00    55    42      0     5    (N)    407  ptly cldy   none
     00:00    54    44      4   340  (NNW)    383  ptly cldy   none
     01:00    54    44      1   281    (W)          cloudy     none
     02:00    52    41      3   294  (WNW)    407   cloudy   lt rain
     03:00    48    33      3   286  (WNW)    442   cloudy   lt rain
     04:00    48    32      5   314   (NW)    320   cloudy     rain
     05:00    47    32      5    82    (E)    365   cloudy     rain
     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