Date: Sat, 21 Jun 1997 05:52:50 -0600 (MDT)
From: Tia Hoyes
Subject: 3.5m obslog 970620
                          FRIDAY   JUNE  20, 1997
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                    ACTUAL
ASTRONOMER   INSTRUMENT   DATE   START FINISH
Staff          GUIDER   6/20-21  19:30 03:30
Diercks        SPICAM     6/21   03:45 05:30
 INST        SCHEDULED      OBS      WEATH     EQUIP   DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
EN00/S     21:56 04:14    0   5.5   0    0    0    0    0    0   0.8
(note: times listed include instrument change time)
                               ACTIVITY LOG
(* means a trouble report has been issued or appended to)
The telescope was opened at 19:30.  Jeff Morgan, Dan Long and I worked on
setting up the GUIDER to take test images for the instrument block.  We began
the night obtaining a few reasonable images, but then quite a few strange
happenings occurred.  We started seeing incorrect images and kept losing the
star from view.
Dan tried to use Arcturus to point the telescope and align the instrument
properly, but after finding an offset problem with both the Azimuth and
Altitude axis, he chose to remap both.
We also remapped the GUIDER numerous times during the evening to try to
correct the problems we were incurring.  We discovered that the filter
position does not properly find its origin by using the command "0 (FILTER)",
but if "REMAP" is used, it does.  Note that until the controller is
reprogrammed, the REMAP command cannot be used without manual supervision.
Eventually, somehow a star stayed on the chip (none of us can explain how it
mysteriously cooperated) and we got rough scale measurements for the GUIDER
instrument block data.
Alas, the problem with the star not staying on the chip returned, and we
decided to hand the telescope over to Alan Diercks to work on Gamma Ray
Burster observations.  The telescope seemed to cooperate, and he obtained some
information.
                                FOCUS LOG
			       JUNE  20  1997
                  Best     Telescope         Wind             Seeing
Time   Inst      Focus      Az  El   Temp#  Dir MPH  filter   FWHM "
03:50 SPICAM -200(6598) 107.2 15.6 14.2/15.9 300.1 9.6  R     1.05
# The first temp is air, the second is truss, both in degrees C.
                                 WEATHER
			      JUNE  20  1997
                                 Wind
    Time   Temp F Dewp.   MPH.    Dir.       DUST     Sky         Precip.
     16:01    67    21     13   288  (WNW)    475    clear         none
     17:01    70    21     12   288  (WNW)    401  mostly clear    none
     18:01    75    26      6   266  (W)      326    clear         none
     19:01    71    22      1   266  (W)      455    clear         none
     20:01    65    20      6   276  (W)      338    clear         none
     21:01    66    18      1   341  (NNW)    396    clear         none
     22:01    66    17      1   196  (SSW)    417    clear         none
     23:01    63    19      6   203  (SSW)    578    clear         none
     00:01    63    19      7   252  (WSW)    533    clear         none
     01:01    62    20      7   279  (W)      626    clear         none
     02:01    62    19      7   281  (W)      608    clear         none
     03:01    61    19      4   294  (WNW)    559    clear         none
     04:01    59    17     11   301  (WNW)    549    clear         none
     05:01    57    17      7   281  (W)      512    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: GIm Ctrl SI502 6.3.96.
-Tia