From: "Dwight K. Elvey" 
To: atm{at}shore.net
Reply-To: "Dwight K. Elvey" 


>From: "Nicolas Delalondre" 
>
>Hello,
>
>I'm starting a 10'' mirror (F/D 4 or 5...) dedicated to astrophotography.
>What should be the fully illuminated field diameter ?
>
>
>

Hi
 What format? CCD, 35mm, 2.5inch sq. or what?
Dwight

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