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42" omg


astrokat

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If that were mine, I would put a mirror at the top (the secondary) and the 45 deg mirror (the thirdly) at the pivot point with the focusser attached to the pivot, its high enough to be comfotably sat at, plus the whole length would be shorter.

Nice project for you BIG DOB boys ;)

REMEMBER you heard this idea here first :)

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If that were mine, I would put a mirror at the top (the secondary) and the 45 deg mirror (the thirdly) at the pivot point with the focusser attached to the pivot, its high enough to be comfotably sat at, plus the whole length would be shorter.

Nice project for you BIG DOB boys ;)

REMEMBER you heard this idea here first :)

That'll be a Nasmyth focus then :)

I'm afraid James Nasmyth beat you too it by a 150 years... :D

Oldham Optical Astro Page Nasmyth focus

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