Date: Tue, 29 Mar 2011 06:35:46 -0600 (MDT)
Subject: 3.5m Night Log 20110328
From: jwhueh@apo.nmsu.edu
                       Apache Point Observatory
                       3.5m Telescope Night Log
                       Monday, March 28, 2011
                                                        ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
W.Ketzeback       J.Huehnerhoff         ECHELLE        19:10   20:30
C.Wu              C.Wu                  DIS            20:32   06:20
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
--------------------------------------------------------------------
DD04/O     19:29   20:29    0    0    0    0   1.0  0.0   0    0
NM02/O     20:29   06:47    0    0    0    0   7.6  2.7   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist:    J.Huehnerhoff
Clear most of the night with good seeing at the start of the night quickly
degrading after sunset.  Dust levels increased around 0100MT but never got
above 5K counts (0.1 micron).  Around 0300MT light clouds rolled in, did
not notice an affect on seeing, but did see and increase in drive error
and star wander due to wind.  The wind was not overly high, gusts did not
top 25mph, so it is unclear why it was less stable than normal.
                    ------- 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
--------------------------------------------------------------------------
 19:29 ECHELLE   416( -803) 234  66   9.2 10.8  9.8  9.8  9.9   ND3  0.79
 20:45 dis-slit   268(  -89) 121  44   8.5  8.5  8.5  8.0  8.0   --  1.61
 00:34 dis-slit   174( -309) 178  79   7.0  6.6  6.9  6.2  6.5   --  1.59
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    58    16     25   243  (WSW)   1654    clear     none
     17:00    54    12     15   272    (W)   1741    clear     none
     18:00    54    11     24   256  (WSW)   1793    clear     none
     19:00    50    12     27   255  (WSW)   1613    clear     none
     20:00    48    11     24   265    (W)   1635    clear     none
     21:00    46    13     23   266    (W)   1690    clear     none
     22:00    45    13     22   258  (WSW)   1608    clear     none
     23:00    45    12     22   271    (W)   1393    clear     none
     00:00    45    12     18   287  (WNW)    940    clear     none
     01:00    44    13     22   295  (WNW)   2571    clear     none
     02:00    44    14     20   297  (WNW)   4255    clear     none
     03:00    44    13     22   299  (WNW)   1550 mstly clr    none
     04:00    43    14     17   301  (WNW)    996 mstly clr    none
     05:00    42    12     20   304   (NW)   1213 mstly clr    none
     06:00    40    17     19   308   (NW)    744 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: 2.14.0
    Current TUI version: 1.8.6