Re: [ATM] ground ring diameter vs. mirror diameter

[Dave Smith <smithersscope@yahoo.com>]

I forgot to mention that the mirror is 1" thick plate
glass.
She was nose heavy before the spring
counterweights...yep.

--- Dave Smith <smithersscope@yahoo.com> wrote:

> If you have a 16
> inch f5.6 mirror like mine (focal length almost 90
> inches!) you can't go building a minimalist
> scope--

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