Date: Tue, 29 Jan 2002 00:34:41 -0700 (MST)
From: John Barentine
Subject: Night Log 20020128
                         APACHE POINT OBSERVATORY
                         3.5m Telescope Night Log
                         Monday, January 28, 2002
                                                           ACTUAL
 ASTRONOMER    OBSERVER(S)             INSTRUMENT      START  FINISH
 -------------------------------------------------------------------
 B.Gillespie   J.Barentine             n/a             --:--   --:--
   INST        SCHEDULED     WEATH     EQUIP     OBS     DAY  NOTUSED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 --------------------------------------------------------------------
 EN01/O      18:28  06:04   0   11.6  0    0    0    0    0    0    0
 note: scheduled times listed include instrument change time
                  ------------- ACTIVITY LOG --------------
 1st Half Observing Specialist: J.Barentine
 Problems discovered during daytime engineering on the tertiary led to
complete shutdown of the telescope.  The earliest we may be on-sky again
is Thursday, Jan 31.  Regardless, the night was unusable because of
weather with cloudy skies and moderate winds throughout.
 2nd Half Observing Specialist: n/a
                   ------- FAILURE LOG -------
 PROG/INST  FAILURE MODE     TIME
 S/E/G/D/O     TI/SHU    START  FINISH    DESCRIPTION
 --------------------------------------------------------------------
               ---------------- FOCUS LOG ---------------
                                        Air/Truss   Wind
 Time   Instrument   Focus     Az  El    Temp-C    Dir MPH  filt  FWHM
 ---------------------------------------------------------------------
              --------------- WEATHER LOG ----------------
                                 Wind                        Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:01    42    14     26   250  (WSW)    352  MstlyCldy   none
     17:01    41    17     15   267  (W)      290  MstlyCldy   none
     18:01    38     7     15   275  (W)     1047  MstlyCldy   none
     19:01    35    11     20   295  (WNW)    595  Overcast    none
     20:01    34    13     13   283  (WNW)    599  Overcast    none
     21:01    32    18     11   323  (NW)     535  Overcast    none
     22:01    31    22     14   289  (WNW)   1492  Overcast    none
     23:01    31    24     13   251  (WSW)    140  Overcast    none
     00:01    31    23     22   288  (WNW)    107  Overcast    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 mirror in place.  Secondary and tertiary mirrors removed from
   telescope and stowed.  Primary support system disengaged (telescope
   stowed pointing at zenith for servicing). 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.