Date: Wed, 12 Sep 2001 06:07:24 -0600 (MDT)
From: John Barentine
Subject: 3.5m Night Log 20010911
                         APACHE POINT OBSERVATORY
                         3.5m Telescope Night Log
                       Tuesday, September 11th, 2001
                                                           ACTUAL
  ASTRONOMER    OBSERVER(S)             INSTRUMENT      START  FINISH
  -------------------------------------------------------------------
  C.Stubbs      A.Miceli,A.Rest          DIS-low        19:51  22:20
  E.Gates       G.Gyu                    DIS-low        01:44  05:20
    INST        SCHEDULED     WEATH     EQUIP     OBS     DAY  NOTUSED
  I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
  --------------------------------------------------------------------
  UW07/R      20:08  01:00  2.7   0    0    0   2.2   0    0    0    0
  UC03/R      01:00  05:51  0.2  1.1   0    0    0   3.6   0    0    0
   note: scheduled times listed include instrument change time
                  ------------- ACTIVITY LOG --------------
   Observing Specialists: J.Dembicky, J.Barentine
   Began startup at 17:00 to allow first half observers to begin
calibrations early.  Closed due to high humidity at 22:20.  Reopened at
01:41 when humidity dropped below the closure threshold and skies were
clearer.  Clouds in the second half proved repeatedly problematic and
observers did not gather much data, but what they did gather seemed
useful.  Closed ahead of schedule due to clouds.
               ---------------- FOCUS LOG ---------------
                                        Air/Truss   Wind
  Time   Instrument   Focus     Az El    Temp-C    Dir MPH  filt   FWHM"
  ----------------------------------------------------------------------
  20:02   DISslit    20(829)   -38 55   12.9/14.5  127 20   none   1.05
  20:19  NA2Guider 2845(58845) -40 53   12.6/14.3  125 18    R     0.93
  02:07    DISslit   40(688)   119 66   12.4/11.4  208 01   none   1.18
  02:09  NA2Guider -2534(53465)119 66   12.4/11.4  208 01    R     1.02
              --------------- WEATHER LOG ----------------
                                  Wind                        Precip.or
      Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
     ------------------------------------------------------------------
     16:01    59    47      8   191  (S)      164   Cloudy    Lt Rain
     17:01    57    47      4   110  (ESE)    248   Cloudy    Lt Rain
     18:01    58    46      9   152  (SSE)    242   Cloudy    None
     19:01    57    45      9   150  (SSE)    304   Cloudy    None
     20:01    56    46     19   125  (SE)     234   Pt Cldy   None
     21:01    54    47     15   118  (ESE)    220   Mst Clr   None
     22:01    53    48     15   116  (ESE)    219   Clear     None
     23:01    52    49     19   129  (SE)     181   Clear     None
     00:01    52    49     10   108  (ESE)    223   Clear     None
     01:01    52    49      6   104  (ESE)    153   Pt Cldy   None
     02:01    55    45      0   228  (SW)     189   Pt Cldy   None
     03:01    54    45      7    32  (NNE)    171   Pt Cldy   None
     04:01    54    45      9    51  (NE)     133   Pt Cldy   None
     05:01    54    44      5    81  (E)      151   Pt Cldy   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
   Primary, secondary, and tertiary mirrors in place and collimated.
   Primary support system operational. Mirror ventilation system in
   place.
   Telescope drives operational. Current Remark version: 2.62. Current
   guide software version: GIm Ctrlv4.1b2. Current TCC version: 2.5.5
   Current MC version: v1_7_3.