Date: Thu, 6 Nov 1997 07:09:44 -0700 (MST)
From: Charles Corson
Subject: 3.5m obslog 971105
                         WEDNSDAY NOVEMBER 5 1997
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                    ACTUAL
ASTRONOMER   INSTRUMENT   DATE   START FINISH
Corson		DIS	  11/5   18:30 19:15
Richards	DIS	  11/04  19:15 06:00
 INST        SCHEDULED      OBS      WEATH     EQUIP   DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
UC01/R	   18:33 04:01    0    0.7  0    0    0    0    0    0    0
UW04/R     04:01 05:01    7.2  2.6  0    0    0    0    0    0    0
(note: times listed include instrument change time)
                               ACTIVITY LOG
(* means a trouble report has been issued or appended to)
The Turner Lens program was productive with observations of two
lens targets under very clear skies.
Gordon Richards also continued his observations, productive as well.
Gordon and Chris Mallouis had five nights of observing with DIS, QSO
survey.  Besides last night's unfortunate warming of the dewars, the
run was very productive with over 70+ targets surveyed, and additional
secondary targets observed as well.
Two important points came to front during this run.  First is that
the efficiency of Gordon's run could have been increased by 20% if
real-time video acquisition of the slit was available (based on the number
of targets observed and 5-10min per acquisition).  Second, repeatablility
of grating tilt positions are more likely than not to render afternoon
wavelength calibrations useless, greater than 1pixel shifts in the central
wavelength at low-res.  More subtle shifts in central wavelength are
seen due to turret movement and other factors, but are seen to be
of 1pixel or less at low-res.  In the spirit of providing information as
to the success or failure of observer's programs with the 3.5m telescope,
I feel that these two issues are worth mentioning in perspective of
Gordon's run.
                                FOCUS LOG
                             NOVEMBER 5 1997
                  Best   Telescope           Wind            Seeing
Time   Inst      Focus    Az  El    #Temp   Dir MPH  filter  FWHM "
18:30  DIS    -200(6230)  155 58   4.4/8.5  63  17   r       1.9
#The first temp is air, the second is truss, both in degrees Celsius
                                 WEATHER
                              NOVEMBER 5 1997
                                   Wind
    Time  Temp F  Dewp. F  MPH.   Dir.       Dust    Sky          Precip.
     16:01    48    22      6   204  (SSW)    574    clear        none
     17:01    44    23      3   233  (SW)     538    clear        none
     18:01    41    24      8    73  (ENE)    641    clear        none
     19:01    40    22     14    59  (ENE)    674    clear        none
     20:01    39    22     14    65  (ENE)    753    clear        none
     21:01    46    12     14    35  (NE)     393    clear        none
     22:01    43    10      0   249  (WSW)    342    clear        none
     23:01    36    22     13    74  (ENE)    583    clear        none
     00:01    37    19     12    75  (ENE)    557    clear        none
     01:01    38    17      1   180  (S)      551    clear        none
     02:01    39    20      1   126  (SE)     738    clear        none
     03:01    41    18      5   179  (S)      600    clear        none
     04:01    40    17      9   164  (SSE)    597    clear        none
     05:01    39    14      7   126  (SE)     487    clear        none
     06:01    39    14      8   124  (SE)     498    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 Ctrlv3.0b11.
Charles