Date: Thu, 3 Jul 1997 06:16:11 -0600 (MDT)
From: Charles Corson
Subject: 3.5m obslog 70702
                           WEDNESDAY JULY 2, 1997
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                    ACTUAL
ASTRONOMER   INSTRUMENT   DATE   START FINISH
Richards          DIS     7/2    21:15 01:10
Devereux          DIS     7/3    01:10 04:19
 INST        SCHEDULED      OBS      WEATH     EQUIP   DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
UC01/R     21:56 01:10    0.8  0    2.2  0    0.3  0    0    0    0
NM01/R     01:10 04:19    0    0    1.9  0    1.2    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 8:30pm with good conditions, but poor seeing.
Winds were out of the North/Northeast at 20-25mph and carried considerable
dust.  We eventually had to close at 23:00.
Gordon Richards was the first observer, continuing observations of QSO's.
We lost most of the available twighlight and some scheduled time due to
telescope issues, mainly three elevation run-aways and poor telescope
pointing.  As noted above, the dome was closed due to blowing dust.
Nick Devereux observed on sight using DIS in imaging mode.  The seeing
improved to 1.3-1.5arc-sec, but the success of the observing is
questionable.  We noticed that when we changed mask positions, that the
wheel was not positioning correctly.  Some tests early this morning
confirmed that our suspicions.  I homed all devices and the wheel could be
positioned with no problems.   The dust count did rise again during Nick's
run, but I remained opened.  There was no visual evidence of dust as
before so, the call was made to stay open (only for about 30-45min. in
total).
The slitview camera worked flawlessly.  I was not able to completely test
the guider centroiding.
                                FOCUS LOG
                              JULY 2, 1997
                  Best   Telescope           Wind            Seeing
Time   Inst      Focus    Az  El    #Temp    Dir MPH  filter  FWHM "
21:20  DIS    -450        233 72   17.6/21.0 60  18     r      2.4
22:55  DIS    -400        290 46   16.3/17.6 87  14     r      3.2
03:15  DIS    -200        137 74   16.9/16.5 90   5     r      1.4
#The first temp is air, the second is truss, both in degrees Celsius
                                 WEATHER
                               JULY 2, 1997
                                   Wind
    Time  Temp F  Dewp. F  MPH.	  Dir.       Dust    Sky          Precip.
     16:01    81    41      0   328  (NNW)   1058    clear        none
     17:01    74    37      1    35  (NE)    1118    clear        none
     18:01    70    36     12    72  (ENE)   1292    clear        none
     19:01    70    35     19    65  (ENE)    940    clear        none
     20:01    66    35     22    61  (ENE)   1280    clear        none
     21:01    64    33     19    65  (ENE)   1290    clear        none
     22:01    63    32     20    68  (ENE)   1503    clear        none
     23:01    61    33     19    59  (ENE)   1764    clear        none
     00:01    61    37     20    60  (ENE)   2129    clear        none
     01:01    58    39     13    65  (ENE)   2420    clear        none
     02:01    60    37      8    63  (ENE)   2304    clear        none
     03:01    61    33      8   101  (E)     2061    clear        none
     04:01    61    34      3    83  (E)     2010    clear        none
     05:01    62    30      1   317  (NW)    1613    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: GImCtrl.1 6.21.97.
-Karen