Date: Tue, 12 Aug 1997 06:22:20 -0600 (MDT)
From: Charles Corson
Subject: 3.5m obslog 970811
                          MONDAY AUGUST 11, 1997
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                    ACTUAL
ASTRONOMER   INSTRUMENT   DATE   START FINISH
Szkody	     DIS          8/10   --    --
Engr	     Guider       8/11   --    --
Evans	     Grim	  8/11   1:10  4:20
 INST        SCHEDULED      OBS      WEATH     EQUIP   DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
UW01/R	   21:23 22:20    0    0    0    1.0  0    0    0    0    0
EN01/O     22:20 01:10    0    0    0.4  2.5  0    0    0    0    0
UC03/R     01:10 04:54    3.2  0    0    0    0    0    0    0.6  0
(note: times listed include instrument change time)
                               ACTIVITY LOG
(* means a trouble report has been issued or appended to)
The dome was not opened until 01:10, due to clouds, ~5mag of extinction.
Szkody's run and the Engineering run had no time on the sky.
Rhodri Evans used Grim in imaging mode, but was severly hampered by the
cirrus and lower level clouds that came and went.  Rhodri's observing was
also impacted by frequent focus shifts.  At 4:20, the decision was made to
not fight the clouds.
*The remaining time was used to obtain a pointing map.  Unfortunately,
several software related issures prevented me from obtaining a model.
In particular, the GIm_Scale and Offset had to modified to allow for
proper pointing corrections for the new bin factor and the software
would not handle a fwhm less than 3pixels.
(the guider is now used in 3x3bin mode to accomodate centroiding)
The seeing was measured at 0.85arc-sec for both J and R bands(guider).
The dust monitor counts are not being logged.
                                FOCUS LOG
                              AUGUST 11, 1997
                  Best   Telescope           Wind            Seeing
Time   Inst      Focus    Az  El    #Temp    Dir MPH  filter  FWHM "
1:10   Grim   -325(6467)  350 48  15/16      280  0    J      1.2
1:50   Grim   -250(6524)  343 47  16.0/15.7  330  2    J      1.0
3:07   Grim   -75 (6693)  340 49  16.0/15.6  293  3    J      1.0
3:35   Grim    0          3   73  15.7/15.6  314  9    J      0.86
#The first temp is air, the second is truss, both in degrees Celsius
                                 WEATHER
                               AUGUST 11, 1997
                                   Wind
    Time  Temp F  Dewp. F  MPH.	  Dir.       Dust    Sky          Precip.
     16:01    72    47      3   242  (WSW)           clear        none
     17:01    68    46      7   275  (W)             clear        none
     18:01    68    40      3   305  (NW)            clear        none
     19:01    68    49      2   251  (WSW)           cirrus       none
     20:01    63    44      4   275  (W)             cirrus       none
     21:01    63    43      4   277  (W)             mstly cldy   none
     22:01    61    45      1   122  (ESE)           mstly cldy   none
     23:01    61    47      6   182  (S)             mstly cldy   none
     00:01    58    49      4   186  (S)             mstly cldy   none
     01:01    57    50      3   184  (S)             cirrus       none
     02:01    60    48      0   238  (WSW)           cirrus       none
     03:01    61    45      5   286  (WNW)           cirrus       none
     04:01    60    45      2   300  (WNW)           cirrus       none
     05:01    60    46      1   317  (NW)            cirrus       none
     06:01    59    46      5   332  (NNW)           cirrus       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.
-Charles