Subject: 3.5m Night Log 20200927
From: trudyk@apo.nmsu.edu
Date: Mon, 28 Sep 2020 11:24:35 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Sunday, September 27, 2020
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
OU03  A.Kosakowski      A.Kosakowski
JH01  H.Hwang           H.Hwang
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
OU03  DIS            19:01   23:09
JH01  DIS            02:09   04:20
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
OU03/R      19:01  01:10    0    2.0  0    0   0.0  4.2   0    0
JH01/R      01:10  06:47    2.5  1.0  0    0   0.4  1.8   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: T.Rudyk
Evening started clear with low winds but poor seeing. Around 22:50 a front hit us with high winds and the dust counts spiked. We had to close shortly after. Dust began to drop around 00:00 but the winds were increasing. Humidity began to rise as the temperature dropped as well. The humidity began to drop around 01:30 but winds remained high. When they finally came down just low enough to open the seeing was awful: the worst I've ever witnessed here ( >7 arcseconds!). Humidity shut us down again at 04:20. We did not open again.
                    ------- 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
--------------------------------------------------------------------------
 19:36 dcamera    385( 1057)  96  53  16.6 19.1 19.2 19.0 16.5   -  1.66
 20:33 dcamera    424( 1042) -148  51  17.4 17.9 18.0 17.4 17.2   -  1.29
 21:47 dcamera    448( 1026) -95  50  17.1 17.1 17.5 16.6 16.9   -  1.33
 02:19 dcamera    450(  588)  17  60   3.1  7.7  9.0  7.4  4.1   -  7.03
            ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    68    25     16   253  (WSW)    664    clear     none
     17:00    65    24      7   286  (WNW)    647    clear     none
     18:00    64    24      5   351    (N)    757    clear     none
     19:00    62    23      1   113  (ESE)    704    clear     none
     20:00    62    22      9     4    (N)    623    clear     none
     21:00    63    19      8    15  (NNE)    578    clear     none
     22:00    61    18      4     2    (N)    582    clear     none
     23:00    50    32     27    71  (ENE)   8920    clear     dust
     00:00    47    32     31    73  (ENE)   6029    clear     dust
     01:00    44    32     18    57  (ENE)           clear    humid
     02:00    39    32     24    73  (ENE)   4148    clear     none
     03:00    36    31     32    73  (ENE)   2873    clear     none
     04:00    34    30     23    71  (ENE)           clear    humid
     05:00    32    29     29    72  (ENE)           clear    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.
              ----------  TELESCOPE SOFTWARE  ----------
Current TCC version: 1.2.4
Current HUB version: v20171231_01
Current TUI version: 2.6.0