Thanks, Don. I leafed-through it years ago, will pick
up a copy and read it in detail. My editor at S&T
recommeded it too, for some reason I didn't buy it at
the time.

For those interested in the star-test, both for mirror
evaluation & collimation, I suggest Dick Suiter's book
"Star-Testing Astronomical Telescopes". Might be a
bit "long-haired" for the casual observer, but
contains a wealth of information.

C.

--- "Don J. Colton" wrote:
> Chuck
> Dave Kriege's book contains a wealth of information
> and yes the table that
> goes with the template gives the proper offset for
> many different configurations. The template has a
> line drawn precisely done
> the major axis and one down the minor axis so it is
> easy to mark the offset.
> Clear Skies
> Don Colton
>
> -----Original Message-----
> From: utah-astronomy-bounces@mailman.xmission.com
>
[mailto:utah-astronomy-bounces@mailman.xmission.com]On
> Behalf Of Chuck
> Hards
> Sent: Tuesday, August 12, 2003 9:00 PM
> To: Visit http://www.utahastronomy.com for the photo
> gallery.
> Subject: RE: [Utah-astronomy] Lasers and collimation
> questions
>
>
>
> Someone earlier in this thread mentioned a secondary
> mirror template for center-dotting purposes.
> Remember
> that if you have a fast system, the diagonal will
> not
> be centered. It must be off-centered slightly in
> order to provide an evenly illuminated focal plane.
> Hopefully the template will take this into account,
> I'm not familiar with the book mentioned.
>
> C.

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