Subject: 3.5m Night Log 20250812
From: dembicky@apo.nmsu.edu
Date: Wed, 13 Aug 2025 12:41:02 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, August 12, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
GS03  T.Henry           J.Davidson
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
GS03  DSSI           00:06   06:17
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
GS03/R      20:00  06:17   1.9  2.2   0    0   0.0  6.2   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: J.Dembicky
Clouds and nearby radar returns kept us closed until around midnight.
No problems with the telescope tonight.
                    ------- 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
--------------------------------------------------------------------------
 00:21 dssi   200( 1420) 157  72  14.0 15.4 15.5 15.1 14.2   692  0.70
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    62    42     11    83    (E)   1158   cloudy     none
     17:00    65    44      6   107  (ESE)   1134   cloudy     none
     18:00    66    46      2   143   (SE)   1203   cloudy     none
     19:00    61    45     13    69  (ENE)   1409   cloudy     none
     20:00    61    46     13    79    (E)   1314   cloudy     none
     21:00    59    46     16    71  (ENE)    915   cloudy     none
     22:00    58    47     12    87    (E)    880 mstly cldy   none
     23:00    58    44     10   115  (ESE)   1152  ptly cldy   none
     00:00    58    44     12   117  (ESE)   1151 mstly clr    none
     01:00    58    43     11   136   (SE)   1226 mstly clr    none
     02:00    59    44     11   165  (SSE)   1279 mstly clr    none
     03:00    58    45     13   151  (SSE)   1913 mstly clr    none
     04:00    56    50     15   138   (SE)        mstly clr    none
     05:00    55    50      3   147  (SSE)        mstly clr    none
     06:00    55    49     10   182    (S)         ptly cldy   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