Subject: 3.5m Night Log 20241027
From: ajt@apo.nmsu.edu
Date: Mon, 28 Oct 2024 11:51:44 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Sunday, October 27, 2024
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
BY04  M.Joner           B.Boizelle,M.Joner
WY01  M.Brotherton      M.Brotherton
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
BY04  KOSMOS         18:45   01:09
WY01  KOSMOS         01:13   02:45
WY01  KOSMOS         03:57   05:02
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
BY04/R      18:25  01:10    0    0    0    0   6.8  0.0   0    0
WY01/R      01:10  07:10   1.0  0.2   0    0   1.6  3.2   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
Thin clouds in the evening that continued to be annoying all through the night. They were the worst between 02:45 and 04:00, we did not close the dome but we stopped observing during this time due to the clouds.
We closed the dome at 05:00 for truss cals as the observer's target was at too high airmass to contend with the clouds.
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
--------------------------------------------------------------------------
 18:57 khigh   315( 1386) 142  71  13.7 15.4 15.1 15.1 13.5   --  0.80
 22:51 khigh   215( 1150) 111  68  13.1 12.5 13.1 12.3 12.7   --  0.74
 01:22 klow   265( 1225) 298  28  13.0 12.4 13.0 12.3 12.8   --  1.29
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    63    28     13   249  (WSW)   1153  ptly cldy   none
     17:00    61    26      7   254  (WSW)   1043  ptly cldy   none
     18:00    60    26     12   228   (SW)   1076  ptly cldy   none
     19:00    57    25     14   218   (SW)   1424  ptly cldy   none
     20:00    57    25     13   200  (SSW)   1256  ptly cldy   none
     21:00    57    26     12   187    (S)   1381  ptly cldy   none
     22:00    56    26     13   212  (SSW)   1412  ptly cldy   none
     23:00    56    25     12   205  (SSW)   1450  ptly cldy   none
     00:00    57    25     14   216   (SW)   1274  ptly cldy   none
     01:00    56    24     14   208  (SSW)    869  ptly cldy   none
     02:00    55    24     13   193  (SSW)    822 mstly cldy   none
     03:00    55    23     15   203  (SSW)    898 mstly cldy   none
     04:00    53    24     14   203  (SSW)    743  ptly cldy   none
     05:00    54    23     17   198  (SSW)    690  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.
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