Subject: 3.5m Night Log 20240531
From: ajt@apo.nmsu.edu
Date: Sat,  1 Jun 2024 12:02:44 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Friday, May 31, 2024
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
NA01  A.Jaskot          A.Jaskot
BY06  E.Hintz           S.Call,M.Christensen
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
NA01  KOSMOS         20:58   01:03
BY06  TSPEC          01:19   04:01
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
NA01/R      20:15  01:10    0    0    0    0   4.9  0.0   0    0
BY06/R      01:10  05:47    0   1.8   0    0   1.3  1.5   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
Dataq/PMSS had to be power cycled again.
Some thin clouds in and out for the first half of the night, but good seeing. Clear after, but we got hit with dust after the wind shifted to the SE.
Closed due to dust at about 04:00; we weren't able to reopen.
No telescope or instrument problems.
                    ------- 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
--------------------------------------------------------------------------
 20:10 klow   130( 1408) 251  66  17.1 19.7 19.4 19.5 17.4   --  0.72
 00:25 tcamera    352( 1624) 256  53  16.8 15.2 15.7 14.9 15.9   Ks  0.83
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    70    27     11   178    (S)   1722  ptly cldy   none
     17:00    74    27     17   201  (SSW)   1944  ptly cldy   none
     18:00    68    26     13   204  (SSW)   2220  ptly cldy   none
     19:00    71    25     26   204  (SSW)   2144 mstly clr    none
     20:00    64    17     14   233   (SW)   1966    clear     none
     21:00    63    12     12   203  (SSW)   1963 mstly clr    none
     22:00    63    11     11   193  (SSW)   1911  ptly cldy   none
     23:00    62    11      6   209  (SSW)   2282 mstly clr    none
     00:00    63    12      6   192  (SSW)   2001 mstly clr    none
     01:00    62    10     11   176    (S)   1779    clear     none
     02:00    62    11      9   190    (S)   1686    clear     none
     03:00    58    31     14   149  (SSE)   3020    clear     none
     04:00    57    39     14   140   (SE)   4198    clear     dust
     05:00    57    36     11   136   (SE)   4570    clear     dust
     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 HUB version: v20171231_01
Current TUI version: 3.1.5