Subject: 3.5m Night Log 20200201
From: mcmillan@apo.nmsu.edu
Date: Sun,  2 Feb 2020 13:07:44 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, February 01, 2020
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
WY01  M.Brotherton      J.McLane
CU09  J.Bally           J.Bally
OU03  A.Kosakowski      A.Kosakowski
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
WY01  TSPEC          17:55   19:10
CU09  ECHELLE        19:14   22:48
CU09  TSPEC          22:50   00:00
OU03  DIS            00:22   05:32
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
WY01/R      17:44  19:24    0    0    0    0   0.0  1.7   0    0
CU09/R      19:24  00:10    0    0    0    0   0.0  4.8   0    0
OU03/R      00:10  06:49   1.3   0    0    0   4.7  0.7   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: R.McMillan
Mostly clear for the first half of the night, with variable seeing.  Increasing clouds during second half eventually caused us to give up a little while before twilight.
                    ------- 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
--------------------------------------------------------------------------
17:52 tcamera    516( 1018)  52  51   6.3  7.3  7.1  7.2  6.6   Ks  0.92
19:22 ecamera    386( -492) -161  59   6.3  5.8  6.1  5.6  5.9   Clear  1.46
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    44    12      7    17  (NNE)     57    clear     none
     17:00    44    12     14    37   (NE)     46    clear     none
     18:00    44    11     26    25  (NNE)     16    clear     none
     19:00    42    11     21    17  (NNE)     27    clear     none
     20:00    43    11     21    25  (NNE)     11    clear     none
     21:00    47     4     15    20  (NNE)     55    clear     none
     22:00    46     2     15    42   (NE)     25 mstly clr    none
     23:00    46     1     15    48   (NE)     35 mstly clr    none
     00:00    47     1      1   232   (SW)     56 mstly clr    none
     01:00    46     0      5   126   (SE)     44 mstly clr    none
     02:00    48     3      2   204  (SSW)     45  ptly cldy   none
     03:00    46     1      1   218   (SW)     43  ptly cldy   none
     04:00    46     2      5   192  (SSW)     41 mstly cldy   none
     05:00    45    -1      2   208  (SSW)     34 mstly cldy   none
     06:00    46     1      1   160  (SSE)     32 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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