Date: Fri, 15 Aug 1997 08:23:02 -0600 (MDT)
From: Karen Gloria
Subject: 3.5-m obslog 970814
                         THURSDAY AUGUST 14, 1997
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                    ACTUAL
ASTRONOMER   INSTRUMENT   DATE   START FINISH
Turner          DIS       8/14     -     -
Konigl         GRIM2    8/14-15    -     -
Ledlow         GRIM2      8/15   02:37 04:57
 INST        SCHEDULED      OBS      WEATH     EQUIP   DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
PU01/S     21:19 22:20    -    0    -   0.7   -   0.3   0    -    0
UC08/R     22:20 01:10    -    0    -    0    -   2.8   0    -    0
NM07/R     01:10 04:57    0    0    0    0   1.6  2.2   0    0    0
(note: times listed include instrument change time)
                               ACTIVITY LOG
(* means a trouble report has been issued or appended to)
Charles Corson was the observing specialist for the first half of the
night.
The telescope was closed due to weather until 22:00 MDT.
Charles was the observer for PU01.  Tzevi Mazeh was the observer for
UC08 (observing from Israel), and Tom Harrison was the observer for
NM07.
*The telescope is oscillating in the azimuth direction.  The amplitude
of the oscillation is 6 arcsec on the sky.  This oscillation is
present at all telescope positions except the northern quadrant, where
it is completely absent (pointing was very good in all regions of the
sky).  Charles and I both explored the several possible causes.  Tom
had two objects in the north, so he was able to do some observing,
which is fortunate because the weather was very good.  I didn't log
any used time to NM07 due to the condition of the tracking in most of
the sky.
*I used the twilight time to work with the guide camera.  Due to the
oscillation problem in most of the sky, I decided not to take pointing
model data.  I tested guiding instead.  Guiding failed, although some
interesting things were learned.
                                FOCUS LOG
                             AUGUST 14 1997
                  Best   Telescope           Wind            Seeing
Time   Inst      Focus    Az  El    #Temp   Dir MPH  filter  FWHM "
02:15  GRIM2  -50(    )    4  60  14.2/14.5 324  10    J      0.7
05:15 guider 60000(6619) 348  57  13.6/13.5   6  11  R+ND2    1.0
#The first temp is air, the second is truss, both in degrees Celsius
                                 WEATHER
                              AUGUST 14 1997
                                   Wind
    Time  Temp F  Dewp. F  MPH.	  Dir.       Dust    Sky          Precip.
     16:01    61    45      9   346  (NNW)    407   clear          none
     17:01    65    51      8   278  (W)      477   clear          none
     18:01    60    51     11   342  (NNW)    321   ptly cldy      none
     19:01    53    46     21   352  (N)      827   ptly cldy      none
     20:01    56    42     18    24  (NNE)    355   ptly cldy      none
     21:01    58    38      7   310  (NW)     228   overcast       none
     22:01    58    37      8   310  (NW)     216   ptly cldy      none
     23:01    56    38     12    34  (NE)     232   ptly cldy      none
     00:01    60    34      1   352  (N)      243   ptly cldy      none
     01:01    58    35      7   354  (N)      165   clear          none
     02:01    57    39      2   335  (NNW)    316   clear          none
     03:01    56    37      9   326  (NW)     230   clear          none
     04:01    56    39      9   338  (NNW)    302   clear          none
     05:01    56    38      8    12  (NNE)    275   clear          none
     06:01    59    39      3   342  (NNW)    411   clear          none
     07:01    59    39      4   359  (N)      463   clear          none
     08:01    60    39      8     7  (N)      445   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
> 1 micron per 0.1 cu. ft.
                             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: 2.36.
Current guide software version: GImCtrlv3.0b10
-Karen