Mark Roberts wrote....
"Digital? Nah. What you want is to go to glass plates.
;-)"

Hey Mark, "been there, done that!"  Me and Mathew Brady were mates!!
In all truthfullness, I did some glass plate work, at Mt Palomar. They were 
14 x 17 and 8x8 I believe. And believe it or not, they were very thin and 
pulled to a curve under vacuum to accomodate the field curvature of the 
Schmidt camera scope. Every once in a while during an exposure a plate would 
break. Gawd, what a mess!!

Walt


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