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Re: [ATM] Fw: Diagonal help
That depends upon how much vignetting that will be necessary and
how big the EP is. I see about 3/4" for the 100% illumination to
become available and then the EP diameter needs to be added to
that.
FWIW, if you are going to use the .965" EPs then a 1/2" would be
added to that which makes the secondary to be about 1.25" as a
nice larte size.
Bob May
bobmay@nethere.com
http://nav.to/bobmay
http://bobmay.astronomy.net
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