From:
Subject: 3.5m Night Log 20111027
Date: Fri, 28 Oct 2011 12:45:04 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Thursday, October 27, 2011
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
B.Balick.         K.Kwitter             DIS            19:10   06:30
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
UW06/R     18:26   01:00    0   0.3   0    0   6.0  0.3   0    0
UW06/R     01:00   07:09    0    0    0    0   6.1  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: R.McMillan
Fog at sunset cleared off just in time for us to open at the end of
evening twilight.  I judged that we focused perhaps 15 minutes later than
we would have if the weather were good at the very beginning of the
night, so I only counted a little time lost to weather.  After that,
skies were clear but seeing was quite variable, from 1 to 3 arcseconds at
various times.  As the telescope cooled I tracked focus on field stars
without stopping to do focus runs.  The telescope had a little trouble
tracking through a high-altitude transit (with windshake), but it never
became a serious problem.  Everything else worked well.
                    ------- 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
--------------------------------------------------------------------------
 19:16 dis-slit   255( -248)  81  74  -0.2  3.8  5.6  3.7  2.0   -  1.04
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    31    31      6   359    (N)    362 mstly cldy   fog
     17:00    32    29     11   303  (WNW)  28955 mstly cldy   fog
     18:00    31    31     12   351    (N)  60327  ptly cldy   fog
     19:00    30    25      9   355    (N)    190    clear     none
     20:00    32    22     11    27  (NNE)    212    clear     none
     21:00    38    21     10    20  (NNE)    149    clear     none
     22:00    37    22     12    16  (NNE)    130    clear     none
     23:00    36    25     16    11    (N)    114    clear     none
     00:00    36    26     18    16  (NNE)     97    clear     none
     01:00    37    26      7   359    (N)    119    clear     none
     02:00    36    27      6    19  (NNE)    109    clear     none
     03:00    37    27      8     8    (N)    161    clear     none
     04:00    37    27      2   342  (NNW)    146    clear     none
     05:00    36    26      0    77  (ENE)    157    clear     none
     06:00    36    26      5    17  (NNE)    175    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: 2.15.0
    Current TUI version: 1.9.3