ATM Dob Clutch

[akelly <akelly@ghg.net>]

>Date: Thu, 10 Dec 1998 17:25:31 -0800
>From: "Howard Banich" <Howard.Banich@nike.com>
>Subject: re:ATM Re: Dob Clutch

>How about a clamp? I envision a small wood clamp attached to the top of

>the rocker box that would take just a little tightening to clamp the
>altitude ring in place. Caveat emptor - haven't tried it or seen it
>tried...

Howard,

        Andy Saulietis and I designed and installed just such a clutch
to three 17.5" Dob Newts in 1982-3.  These worked quite well and the one
on my 17.5 was very necessary to hold things in place back when I had
the scope on an equatorial platform for CCD imaging.  The curved clamp
had a roughened Masonite brake pad on the undersurface which clamped
against the top of the aluminum trunnion surface.

Al Kelly
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