Subject: 3.5m Night Log 20250728
From: dembicky@apo.nmsu.edu
Date: Tue, 29 Jul 2025 09:25:53 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, July 28, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
OU01  G.Jewett          G.Jewett
OU02  A.Moss            A.Moss
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
OU01  ARCTIC         --:--   --:--
OU02  KOSMOS         --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
OU01/R      20:13  01:10   2.6  2.3   0    0   0.0  0.0   0    0
OU02/R      01:10  06:07   4.9   0    0    0   0.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: J.Dembicky
Clouds, rain, and humidity tonight, we never had a chance to open.
                    ------- 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    64    56      4   206  (SSW)          cloudy   lt rain
     17:00    63    54      9   189    (S)    657   cloudy     none
     18:00    62    53      8   176    (S)          cloudy     none
     19:00    62    53      9   154  (SSE)          cloudy     none
     20:00    56    55     12   122  (ESE)          cloudy     rain
     21:00    55    55     18   164  (SSE)          cloudy     rain
     22:00    54    50      6   128   (SE)          cloudy    humid
     23:00    56    47     15   163  (SSE)          cloudy    humid
     00:00    53    49      7   188    (S)          cloudy    humid
     01:00    52    52     10   146   (SE)          cloudy    humid
     02:00    54    46     15   184    (S)          cloudy     rain
     03:00    55    46     12   181    (S)          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.
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