From: Russet McMillan
Subject: 3.5m Night Log 20020315
Date: Sat, 16 Mar 2002 05:34:44 -0700 (MST)
                         APACHE POINT OBSERVATORY
                         3.5m Telescope Night Log
                          Friday, March 15, 2002
                                                           ACTUAL
 ASTRONOMER    OBSERVER(S)             INSTRUMENT      START  FINISH
 -------------------------------------------------------------------
 D.Vanden Berk B.Wilhite               DISII           19:00   20:15
 C.Gronwall    C.Gronwall              DISII           --:--   --:--
   INST        SCHEDULED     WEATH     EQUIP     OBS     DAY  NOTUSED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 --------------------------------------------------------------------
 UC05/R      19:04  00:10  3.9   0    0    0   0.5  0.7   0    0    0
 JH03/R      00:10  05:19  5.1   0    0    0    0    0    0    0    0
 note: scheduled times listed include instrument change time
                  ------------- ACTIVITY LOG --------------
 1st Half Observing Specialist: J.Barentine
 Opened the enclosure right around sunset to get things cooling and launch
the good ship DISII on her maiden science voyage.  The weather started out
looking much better than last night, with lower dust and diminishing
winds.  Once it got dark I did a simple test suggested earlier in the
afternoon by Russet.  This consisted of focusing the instrument via the
slitviewer, then taking images with the red and blue cameras in imaging
mode to compare the focus values.  The results showed consistency in the
focus between all three detectors to within a few percent, probably due to
variable seeing.
 The dust counts had been up around the closure limit near the beginning
of the night but I stayed open anyway because the humidity was low.  A
little after 8pm the dust counts in the enclosure shot up to 5000 and the
winds reached the closure limit, so I closed.  The winds dropped again but
the dust pretty much put the kibosh on any useful work tonight.
 2nd Half Observing Specialist: R.McMillan
 Second half remained visibly dusty, with thickening clouds.  Lots
 more DISII characterization work and software testing.
                   ------- 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
 ---------------------------------------------------------------------
 19:10  DISslit     10(364)   144  55   2.0/2.2    198  28   -     1.30
              --------------- WEATHER LOG ----------------
                                 Wind                        Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:01    41     6     11   249  (WSW)   1632  PtlyCldy    none
     17:01    39     3     15   184  (S)     1456   Clear      none
     18:01    36     5     19   191  (S)     1316   Clear      none
     19:01    36     5     26   195  (SSW)   1636  PtlyCldy    dust
     20:01    35     6     23   193  (SSW)   1777  PtlyCldy    dust
     21:01    36     5     24   205  (SSW)   1547 MstlyCldy    dust
     22:01    34     8     26   198  (SSW)   2242 MstlyCldy    dust
     23:01    34     9     19   193  (SSW)   2697 MstlyCldy    dust
     00:01    33    11     17   192  (SSW)   2509  cloudy      dust
     01:01    31    12     17   201  (SSW)   2384  cloudy      dust
     02:01    30    13     15   191  (S)     2465  cloudy      dust
     03:01    30    10     15   189  (S)     2185  cloudy      dust
     04:01    30     9     18   215  (SW)    1990  cloudy      dust
     05:01    30    10     20   209  (SSW)   1841  cloudy      dust
   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: 2.81
   Current guide software version: GIm Ctrlv4.1b2
   Current TCC version: 2.5.5   Current MC version: tmc