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Re: ATM Field De-rotator Question, and an Important Alternate Scope Design


Hi Kevin,

I was following this thread and the Wynne design sounds very intriguing to 
me. I'm just starting to polish a 26" f3.9 and was looking at maybe a Nasmyth 
Cass, but the spherical  secondary of the Wynne sounds much easier. Are the 
correcting lenses in the system simple or complex? What kind of glass? Have 
you built one?

Thanks,

Paulo