Subject: 3.5m Night Log 20171214
From: trudyk@apo.nmsu.edu
Date: Fri, 15 Dec 2017 13:31:57 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Thursday, December 14, 2017
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
M.Bentz           M.Bentz               DIS            17:24   18:11
K.KWITTER         K.KWITTER             DIS            18:12   00:30
K.KWITTER         K.KWITTER             DIS            01:48   05:45
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
GS01/R     17:07   18:07    0    0    0.4  0   0.6  0.0   0    0
NA01/R     18:07   06:50    1.3  0    0    0   9.1  2.4   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: T.Rudyk
Had some troubles on a late checkout with the az axis being lost and throwing  fiducial errors.  Called Bill K. and together we reset the az position so that the magnesensors could finish the correction.  Time is noted in the failure log.  Skies started out clear, and remained mostly clear throughout the night. Seeing was very bad, though.  Dcam was showing a sticky shutter...veritcal shine on bright stars.  Humidity began to rise around 23:00. We closed due to humid conditions at 00:30.  By 01:52, humidity began to drop, and we opened. We were able to stay open the rest of the night.
                    ------- FAILURE LOG -------
PROG   INST   FAILURE MODE     TIME
    (SEDFNVOG)   TI/SHU    START  FINISH  DESCRIPTION
----------------------------------------------------------------------
GS01/R    D    T/S        16:58   17:22   Az was lost. Had to reset.
            ---------------- FOCUS LOG ---------------
Time  Instrument  Focus     Az  El  Temp Strc Prim  Sec  Air  filt  FWHM
--------------------------------------------------------------------------
 18:42 dcamera    550(  307)   2  52  -3.7  1.0  2.1  0.9 -2.6   -  2.00
 19:53 dcamera    414(   -9) 266  57  -4.3 -2.5 -1.3 -2.6 -3.9   -  2.02
 21:31 dcamera    672(   95) 136  52  -5.4 -5.5 -4.8 -5.5 -5.4   -  2.48
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    30    13     11    67  (ENE)   1639    clear     none
     17:00    26    12     10    79    (E)   1736    clear     none
     18:00    26    13     14    54   (NE)   1658    clear     none
     19:00    23    13     14    63  (ENE)   1888    clear     none
     20:00    21    13     21    69  (ENE)   1920    clear     none
     21:00    21    13     17    67  (ENE)   1614    clear     none
     22:00    20    13     20    76  (ENE)   1546    clear     none
     23:00    19    13     19    75  (ENE)           clear     none
     00:00    18    14     14    74  (ENE)        mstly clr   humid
     01:00    17    14     17    76  (ENE)           clear    humid
     02:00    18    12      6    19  (NNE)           clear     none
     03:00    23    13     10    24  (NNE)           clear     none
     04:00    25    11     12    57  (ENE)    876    clear     none
     05:00    24    11      5    97    (E)    912    clear     none
     06:00    23    10      1   111  (ESE)   1024    clear     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.
                          TELESCOPE STATUS
    Telescope drives operational. Current TCC version: 1.2.4
    Current TUI version: 2.6.0