Subject: 3.5m Night Log 20250916
From: mcroom@apo.nmsu.edu
Date: Wed, 17 Sep 2025 10:20:44 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, September 16, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UW04  S.Demasi          S.Demasi
GS02  D.Gies            P.Wysocki
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW04  ARCTIC         --:--   --:--
GS02  ECHELLE        --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW04/R      19:16  01:10   5.9   0    0    0   0.0  0.0   0    0
GS02/R      01:10  06:40   1.3  4.2   0    0   0.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: M.Croom
Alcor all-sky camera needed USB restart.
Rain, clouds, humidity kept us closed all night. B Half observer called it early; shut down at 04:15.
No telescope or instrument issues were encountered.
                    ------- 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
--------------------------------------------------------------------------
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    54    50     16    82    (E)          cloudy   lt rain
     17:00    55    48     11    99    (E)          cloudy   lt rain
     18:00    51    49     15    37   (NE)          cloudy     rain
     19:00    48    45     23    63  (ENE)          cloudy     rain
     20:00    51    42     17    77  (ENE)          cloudy     rain
     21:00    52    41     19   130   (SE)          cloudy   lt rain
     22:00    54    39     11   184    (S)          cloudy     none
     23:00    53    45     17   150  (SSE)          cloudy   lt rain
     00:00    52    47     17   146   (SE)          cloudy     none
     01:00    52    45     16   152  (SSE)          cloudy    humid
     02:00    52    45     13   174    (S)          cloudy    humid
     03:00    51    46      2   204  (SSW)          cloudy    humid
     04:00    51    46      5   183    (S)          cloudy    humid
     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