Subject: 3.5m Night Log 20240509
From: cgray@apo.nmsu.edu
Date: Fri, 10 May 2024 11:08:54 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Thursday, May 09, 2024
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
GS01  M.Crenshaw        M.Shea
UV01  S.Majewski        S.Majewski
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
GS01  KOSMOS         20:00   22:00
UV01  DIS            01:00   02:22
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
GS01/R      20:00  01:10   3.0  0.2   0    0   0.0  2.0   0    0
UV01/R      01:10  05:59   3.4   0    0    0   1.4  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
The night started out clear with good seeing. The clouds started rolling in a couple hours later and became a problem around 20:00. GS01 couldn't punch through them and gave up. They cleared a enough for UV01 to observe for a bit, but then the wind shifted east. Dust spiked to 10K and the humdiity over 80%. By 5am things were still bad and we gave up.
No problems 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
--------------------------------------------------------------------------
 19:45 khigh   336( 1229) 194  80  11.1 11.7 11.9 11.2 11.1   --  0.85
 00:11 dcamera    381( 1055) 123  29  10.7 10.0 10.7  9.7 10.2   --  1.54
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    58    17     15   262    (W)   3061    clear     none
     17:00    60    16     25   244  (WSW)   2642    clear     none
     18:00    60    14     18   239  (WSW)   2474    clear     none
     19:00    55    12     19   238  (WSW)   2515 mstly clr    none
     20:00    53    11     16   244  (WSW)   2426 mstly cldy   none
     21:00    52    11     10   247  (WSW)   2411 mstly cldy   none
     22:00    52    11     11   312   (NW)   2791   cloudy     none
     23:00    52    14     12   288  (WNW)   2886 mstly cldy   none
     00:00    52    15     14   293  (WNW)   2897  ptly cldy   none
     01:00    51    12      6   269    (W)   2790 mstly cldy   dust
     02:00    47    14     16    71  (ENE)   2922 mstly cldy   dust
     03:00    40    29     23    73  (ENE)   9408 mstly cldy   dust
     04:00    38    32     15    88    (E)   9612  ptly cldy   dust
     05:00    38    33     13    82    (E)         ptly cldy  humid
     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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