Subject: 3.5m Night Log 20250811
From: dembicky@apo.nmsu.edu
Date: Tue, 12 Aug 2025 10:50:06 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, August 11, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UV04  Y.Zhou            J.Davidson
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UV04  DSSI           --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UV04/R      20:01  06:16   1.4  8.9   0    0   0.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: J.Dembicky
I did some alt drive slip tests during checkout to look for bad spots.
Delayed opening due to storms nearby with radar returns.  Thunderstorm at 23:00 and
several more during the 2nd half.
We finally gave up at 04:50 with nearby rain.
                    ------- 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    76    43     16   222   (SW)   1963  ptly cldy   none
     17:00    75    41      7   203  (SSW)   1817  ptly cldy   none
     18:00    73    41     13   239  (WSW)   1692  ptly cldy   none
     19:00    69    44      9   150  (SSE)   1799  ptly cldy   none
     20:00    63    46     21   145   (SE)   1949 mstly cldy   none
     21:00    62    44     22   149  (SSE)   1700 mstly cldy   none
     22:00    61    43     20   154  (SSE)   1648   cloudy     rain
     23:00    57    47     17   137   (SE)   2052   cloudy     rain
     00:00    52    48     23    96    (E)          cloudy   lt rain
     01:00    50    47     22    74  (ENE)          cloudy   lt rain
     02:00    52    44      6   110  (ESE)          cloudy   lt rain
     03:00    51    45     14    90    (E)          cloudy     rain
     04:00    51    45     19    76  (ENE)    865   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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Current HUB version: v20171231_01
Current TUI version: 3.1.8