Subject: 3.5m Night Log 20201209
From: mcmillan@apo.nmsu.edu
Date: Thu, 10 Dec 2020 13:19:58 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Wednesday, December 09, 2020
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UV02  R.Wilson          R.Wilson
CU07  J.Bally           J.Bally
AP01  T.Murphy          R.McMillan
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UV02  ECHELLE        17:04   00:10
CU07  ECHELLE        00:10   04:02
CU07  ARCTIC         04:05   04:37
AP01  APOLLO         --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UV02/R      17:06  00:10    0    0    0    0   7.1  0.0   0    0
CU07/R      00:10  05:46    0   1.2   0    0   2.0  2.4   0    0
AP01/R      05:46  06:46    0   1.0   0    0   0.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: R.McMillan
First half was lovely, clear with good seeing.  Then a few thin clouds moved in, then a few more, then we had thick clouds with nearby precipitation so it was time to close.
                    ------- 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
--------------------------------------------------------------------------
 18:19 ecamera    628( -186) 248  39   5.1  6.8  6.9  6.2  5.4   ND3  0.89
 01:31 ecamera    449( -475)  -4  52   5.2  4.7  5.2  4.6  5.0   ND3  0.95
 05:11 arctic   548(  712)  43  67   4.8  4.6  5.1  4.7  4.7   657  1.04
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    43     3      9   305   (NW)    174    clear     none
     17:00    42     9     14   281    (W)    204    clear     none
     18:00    42    13     14   292  (WNW)    141    clear     none
     19:00    42    14     12   289  (WNW)    147    clear     none
     20:00    43    12      9   263    (W)    116    clear     none
     21:00    43    14      9   272    (W)    166    clear     none
     22:00    42    17     11   268    (W)    324    clear     none
     23:00    41    22     10   264    (W)    209    clear     none
     00:00    41    21     11   264    (W)    157  ptly cldy   none
     01:00    42    20     12   268    (W)    102  ptly cldy   none
     02:00    41    21     11   265    (W)    136  ptly cldy   none
     03:00    41    20     10   257  (WSW)    171  ptly cldy   none
     04:00    41    20     12   222   (SW)    269 mstly cldy   none
     05:00    42    24     17   207  (SSW)    118 mstly cldy   none
     06:00    42    23     21   206  (SSW)    274 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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