Subject: 3.5m Night Log 20230925
From: dembicky@apo.nmsu.edu
Date: Tue, 26 Sep 2023 12:41:02 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, September 25, 2023
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
GS02  D.Gies            K.Shepard
UW07  B.Morris          S.Hawley
CU01  K.McGouldrick     K.McGouldrick
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
GS02  TSPEC          19:04   22:04
GS02. ECHELLE        22:04   23:50
UW07  ECHELLE        --:--   --:--
CU01  TSPEC          04:30   06:32
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
GS02/R      19:04  01:10    0   1.3   0    0   0.0  4.8   0    0
UW07/R      01:10  04:30   0.9  2.4   0    0   0.0  0.0   0    0
CU01/R      04:30  06:46    0    0    0    0   2.3  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: J.Dembicky
I closed at 23:50 due to humidity.  Inside Optidew seemed to be reading about 15% too high.  The old outside sensor was also reading about 8-10% too high.  I used the outside optidew, and check railings outside, to determine when the humidity was getting too high.
When the humidity started to drop around 04:00, (clouds were forming overhead), both the outside optidew and outside old sensor were in closer agreement.  The inside optidew was still reading vary high humidity.
                    ------- 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
--------------------------------------------------------------------------
 19:23 tcamera    429( 1879)  58  49  15.1 19.0 18.2 19.0 16.8   Ks  1.06
 22:09 ecamera    291(  202)  59  83  13.2 13.2 13.7 12.7 13.3   ND2  1.10
 04:45 tcamera    340( 1410) -11  64  12.0 11.1 12.2 10.9 11.9   Ks  1.30
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    70    46     16   213  (SSW)    765    clear     none
     17:00    66    43     16   213  (SSW)    698    clear     none
     18:00    64    36      5   243  (WSW)    563    clear     none
     19:00    60    39      9   232   (SW)    758    clear     none
     20:00    57    42      4   107  (ESE)    848    clear     none
     21:00    54    49      7    98    (E)   1486    clear     none
     22:00    55    46      7    96    (E)   1181    clear     none
     23:00    55    44      9   109  (ESE)   1006    clear     none
     00:00    52    50     14    80    (E)           clear    humid
     01:00    51    50     14    81    (E)           clear    humid
     02:00    51    49     10    86    (E)        mstly clr   humid
     03:00    51    49      7    90    (E)        mstly clr   humid
     04:00    54    47     13   141   (SE)         ptly cldy   none
     05:00    53    46     10   138   (SE)   1368  ptly cldy   none
     06:00    53    46     10   179    (S)   1441 mstly clr    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  ----------
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Current TUI version: 3.1.3beta0