Date: Wed, 18 Jun 1997 06:31:59 -0600 (MDT)
From: Karen Gloria
Subject: 3.5-m obslog 970617
                           TUESDAY JUNE 17, 1997
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                    ACTUAL
ASTRONOMER   INSTRUMENT   DATE   START FINISH
Staff          guider   6/17-18  21:55 03:42
Diercks        SPIcam     6/18   03:42 04:13
 INST        SCHEDULED      OBS      WEATH     EQUIP   DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
EN00/S     21:55 04:13    -   5.8   -    0    -    0    0    -   0.5
UW??/R       -     -      -   0.5   -    0    -    0    0    -    0
(note: times listed include instrument change time)
                               ACTIVITY LOG
(* means a trouble report has been issued or appended to)
The telescope was opened at 22:30 MDT, after the first phase of tests
on the new rotator cable wrap was complete.
Jeff Morgan and Jon Davis, with assistance from me and Tia Hoyes ran
extensive tests on the cable wrap during the day and into the evening,
before going onto the sky.  I edited the instrument blocks to allow
for the new rotator wrap limits, except for the AOTF block, which
already has more restrictive limits, and the chaos block, which
doesn't use the rotator.  Tia Hoyes and I tested the software wrap
limits with DIS before going on the sky.
The sky was photometric when we opened, so Tia and I took a set of
throughput data with DIS.  These are on marmot in
/marm0/throughput/970617.
After the throughput observations, Jeff and I took several long DIS
integrations at various rotator angles and velocities.  All the images
showed good tracking (except near the zenith, as is expected).  We
made a point of making several large altitude slews to test the
altitude axis motor as well.
Ed Turner made arrangements for an early morning GRB observation.
This was a target of opportunity.  Alan Diercks (UW) volunteered to do
the observations.  These were done with SPIcam.  I'm logging this as
drop-in time for UW.  If this is incorrect, I will revise the time
account log.
Two sonic booms were heard at the site.  These occurred between 22:15
and 22:30 MDT.  Very loud.
                                FOCUS LOG
                              JUNE 17 1997
                  Best   Telescope           Wind            Seeing
Time   Inst      Focus    Az  El    #Temp   Dir MPH  filter  FWHM "
23:10  DIS    -350(6328) 287  59  14.8/17.1 153  7     r      1.4
01:20  DIS    -275(6380)  96  39  13.6/14.4 174  7   r+ND2    1.9
02:50  DIS    -100(6389)   8  84  13.9/13.9 177  8   r+ND2    1.4
03:45 SPIcam  -150(6047) 131  39  13.7/13.7 176  9     R      1.1
#The first temp is air, the second is truss, both in degrees Celsius
                                 WEATHER
                               JUNE 17 1997
                                   Wind
    Time  Temp F  Dewp. F  MPH.	  Dir.       Dust    Sky          Precip.
     16:01    65    30      6   284  (WNW)    353   clear          none
     17:01    64    27      8   310  (NW)     319   clear          none
     18:01    66    32      7   268  (W)      342   clear          none
     19:01    65    32      8   268  (W)      417   clear          none
     20:01    61    31      6   273  (W)      424   clear          none
     21:01    58    31      2   291  (WNW)    461   clear          none
     22:01    59    32      1   351  (N)      489   clear          none
     23:01    58    31      5   169  (SSE)    473   clear          none
     00:01    58    31      8   147  (SSE)    477   clear          none
     01:01    57    32      9   143  (SE)     497   clear          none
     02:01    57    31      7   164  (SSE)    510   clear          none
     03:01    57    30      6   171  (S)      863  cirrus @ horiz  none
     04:01    56    31      6   177  (S)      770   clear          none
     05:01    56    31      8   172  (S)      634   clear          none
     06:01    55    30      9   153  (SSE)    567   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.
-Karen