Re: [ATM] Tri-shiefspiegler

["Jim Girard" <argojg@comcast.net>]

----- Original Message ----- 
From: "David Williams" <dwilliams1128@earthlink.net>
Subject: [ATM] Tri-shiefspiegler


"Does anyone know of the advantages of the Tri-shiefspiegler telescope
besides that there is more consentration of light in the first few rings in
the difration patern of a star?  And therefore better resolution at the same
power.  It apperently has 3 mirrors, but do you know if it has an optical
window too?  How difficult are these instruments to make? "


You might also take a look at the Kutter Schiefspiegler variation:
http://www.telescopemaking.org/schief.html which is probably a bit easier to
make (although smaller.)

Jim Girard


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