Date: Thu, 19 Jun 1997 06:46:04 -0600 (MDT)
From: Karen Gloria
Subject: 3.5-m obslog 970618
                         WEDNESDAY JUNE 18, 1997
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                    ACTUAL
ASTRONOMER   INSTRUMENT   DATE   START FINISH
Staff           DIS     6/17-18  22:30 00:30
Diercks       SPIcam      6/18   02:50 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    -   2.0   -   2.3   -   0.6   0    -   1.4
UW??/R       -     -      -   1.4   -    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 21:20 MDT.  I didn't get on the sky until
22:30 MDT due to a *rotator runaway and a *problem with the dis mount.
Jeff Morgan, Tia Hoyes and I sorted out both problems by 22:30.  The
telescope was closed at 00:30.  A lot of pollen was visible in the
air.  It was reopened at 02:50 MDT.  It was rather difficult to tell
just how much pollen or dust was in the air with the bright moonlight.
Jeff Tia, and Jon Davis worked on the rotator (for the guide camera
installation) during the day and into the evening.  Later on I observed a
spectrophotometric standard.  I planned to observe one starting at the
meridian and continue as it increased in airmass.  I didn't have one
near there, so I chose a high airmass standard to observe through
decreasing airmass.  Due to the pollen closure, I got just one set of
observations.  So, for what it's worth, I have throughput data taken
at 2.6 airmass.  These are on Marmot in /marm0/throughput/970618.
Alan Diercks observed remotely again to try to locate an optical
counterpart for the recent gamma-ray burster.  A stubborn cloud was
right in front of his target area most of the time, though.
                                FOCUS LOG
                              JUNE 18 1997
                  Best   Telescope           Wind            Seeing
Time   Inst      Focus    Az  El    #Temp   Dir MPH  filter  FWHM "
23:10  DIS   -200(6728)   66  16  16.1/17.9 148 12     r      2.1
00:10  DIS   -300(    )   73  29  15.5/16.7 168 11     r      2.1
03:15 SPIcam -200(6431)  136  43  15.0/16.1 179  7     R      1.1
#The first temp is air, the second is truss, both in degrees Celsius
                                 WEATHER
                               JUNE 18 1997
                                   Wind
    Time  Temp F  Dewp. F  MPH.	  Dir.       Dust    Sky          Precip.
     16:01    71    33     12   268  (W)      511  ptly cldy       none
     17:01    71    30      8   238  (WSW)    490   clear          none
     18:01    71    31      2   259  (W)      489   clear          none
     19:01    69    28      0   293  (WNW)    496   clear          none
     20:01    65    29      4   205  (SSW)    496   clear          none
     21:01    60    30      6   185  (S)      691   clear          none
     22:01    61    33     10   139  (SE)     660   clear          none
     23:01    61    34     15   141  (SE)     537   clear          none
     00:01    60    33     13   153  (SSE)    639   clear          none
     01:01    61    31     13   163  (SSE)    827  ptly cldy       none
     02:01    62    30      9   180  (S)      749  ptly cldy       none
     03:01    58    32     13   182  (S)      835  ptly cldy       none
     04:01    59    31      9   180  (S)      847  ptly cldy       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