Subject: 3.5m Night Log 20231212
From: cgray@apo.nmsu.edu
Date: Wed, 13 Dec 2023 12:54:53 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, December 12, 2023
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
JH02  Z.Rustamkulov     Z.Rustamkulov
UW07  K.Suberlak        K.Suberlak
JH03  Q.Wang            Q.Wang
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
JH02  KOSMOS         19:07   20:07
UW07  KOSMOS         20:08   00:10
JH03  KOSMOS         00:12   05:19
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
JH02/R      17:07  20:07   2.0   0    0    0   1.0  0.0   0    0
UW07/R      20:07  00:10    0    0    0    0   4.1  0.0   0    0
JH03/R      00:10  06:48   1.5   0    0    0   5.1  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
The night started out with thick clouds. JH02 would have lost their time but UW07 donated an hour to the cause. Seeing moderate to poor for the whole night and the clouds drifted in and out. The humidity started increasing and, the way the clouds were behaving further along the ridge, there was a threat of fast rain. Once the clouds starting forming over us, I closed.
                    ------- 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
--------------------------------------------------------------------------
 20:34 kosmos   288(  844)  38  50   3.2  4.2  4.9  4.0  3.8   --  2.04
 00:11 kosmos   336(  881)   3  25   3.8  3.5  4.0  3.5  3.8   --  1.57
 04:47 kosmos   331(  806) 117  21   2.8  1.9  3.5  2.9  2.8   --  2.02
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    43    24     14   211  (SSW)    833   cloudy     none
     17:00    42    25      9   183    (S)    738   cloudy     none
     18:00    41    25     11   215   (SW)    807   cloudy     none
     19:00    41    27     14   204  (SSW)    949 mstly clr    none
     20:00    39    25     11   204  (SSW)    968    clear     none
     21:00    38    25     12   181    (S)   1203    clear     none
     22:00    39    26     15   182    (S)   1000    clear     none
     23:00    40    26     14   162  (SSE)   1110    clear     none
     00:00    39    24     15   151  (SSE)   1231    clear     none
     01:00    39    25     15   175    (S)   1114    clear     none
     02:00    38    26     14   175    (S)   1294  ptly cldy   none
     03:00    39    28     13   173    (S)   1194  ptly cldy   none
     04:00    38    29     17   150  (SSE)   1377 mstly clr    none
     05:00    37    30     20   146   (SE)   1373 mstly 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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