Re: [ATM] Schiefspiegler

["Bob May" <rmay@nethere.com>]

Schiefs, like refractors for different reasons, don't scale up
well for a start.  Since the intention of such long focal length
instruments is for planetary work, anything over about 6" is
going to somewhat be a waste anyway due to the turbulence in the
atmosphere, they are usually built smaller.
I'll also note that long focal lengths also means large images of
things and thus relatively low power EPs compared to what the
Newt crowd uses are normal.  My longest FL eyepiece for my 200"
refractor is an 8" focal length!
Bob May

rmay at nethere.com
http: slash /nav.to slash bobmay
http: slash /bobmay dot astronomy.net


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