Subject: 3.5m Night Log 20161110
From: mcmillan@apo.nmsu.edu
Date: Fri, 11 Nov 2016 12:33:17 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Thursday, November 10, 2016
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
M.Klaene          R.McMillan,C.Gray     ARCTIC         18:02   19:45
                  R.McMillan            NA2GDR         19:45   20:15
                  R.McMillan            ARCTIC         04:30   05:30
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
EN01/W     17:13   06:22   2.3  7.7   0    0   1.0  2.2   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: R.McMillan
It was humid at sunset, but we did get some observations of Venus with ARCTIC.  Then I did instrument blocks with ARCTIC and NA2 guider through heavy clouds (I was observing a 2nd magnitude star with no filter for a while).  I closed after the instrument blocks, and then humidity went up for a while.  Everything outside frosted over.  While closed, I worked on DIS spectrograph focus, which needed to be adjusted due to the recent cold snap.
I was cautious when humidity dropped, but I decided it really was stable about an hour before twilight and tried to set up for some ARCTIC tracking tests to see if the instrument blocks helped.  Instead I found a problem with ARCTIC itself and spent some time trying to characterize it.  We know one way to fix this problem, but we would like to find a better way, so I didn't do anything drastic.  I left ARCTIC in a bad state for Bill to work with during the day.
                    ------- FAILURE LOG -------
PROG   INST   FAILURE MODE     TIME
    (SEDFNVOG)   TI/SHU    START  FINISH  DESCRIPTION
----------------------------------------------------------------------
            ---------------- FOCUS LOG ---------------
Time  Instrument  Focus     Az  El  Temp Strc Prim  Sec  Air  filt  FWHM
--------------------------------------------------------------------------
 18:50 arctic   889(  772) -14  52   2.0  4.5  3.8  4.4  3.8   -  1.51
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    40    33      6   251  (WSW)    227 mstly cldy   none
     17:00    36    34      4   235   (SW)        mstly cldy  humid
     18:00    35    29      2   189    (S)        mstly cldy   none
     19:00    35    29      8   181    (S)    305 mstly cldy   none
     20:00    36    28     10   139   (SE)    372 mstly cldy   none
     21:00    35    31     11   134   (SE)         ptly cldy   none
     22:00    35    28      1   179    (S)         ptly cldy  humid
     23:00    34    31      2   190    (S)         ptly cldy  humid
     00:00    33    31      5   186    (S)        mstly clr   humid
     01:00    33    31      5   190    (S)        mstly clr   humid
     02:00    33    32      1   217   (SW)        mstly clr   humid
     03:00    34    29      6    26  (NNE)        mstly clr    none
     04:00    33    27      7    20  (NNE)        mstly clr    none
     05:00    33    26     11    40   (NE)    307 mstly clr    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: 1.2.2
    Current TUI version: 2.5.1