Instrument Host Overview
      ========================
 
      This is the  2.7m (107in) Harlan J. Smith Telescope of the
      McDonald Observatory.
 
      Observatory
      -----------
      McDonald Observatory, located in the Davis Mountains of
      south central Texas, is run by the University of Texas
      at Austin.  As of this writing it is operating four
      optical telescopes.  The observatory is at longitude
      104:01.3 W and 30:40.3 N at an altitude of 2075 m.
 
 
      Telescope
      ---------
      The Harlan J. Smith Telescope has a primary mirror 107
      inches in diameter.  Three different foci are available,
      each with its own instrumentation.  The following
      information is from the McDonald Observatory web site at:
 
             http://www.as.utexas.edu/mcdonald
 
      It was current as of 26 Feb 2003.
 
 
         Primary Mirror
            diameter        2.72 m
            focal length   10.68 m
            f-ratio         3.93
 
         Cassegrain Ritchey-Chretien focus
            focal length   23.91 m
            f-ratio         8.8
            field angle    61.5  arcmin
            plate scale     8.62 arcsec/mm
 
         Cassegrain focus
            focal length   47.98 m
            f-ratio        17.7
            field angle    31    arcmin
            plate scale     4.29 arcsec/mm
 
         Coude focus
            focal length   88.43 m
            f-ratio        32.54
            field angle     3    arcmin
            plate scale     2.32 arcsec/mm