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RE:[ATM] 6"mirror, 10" focus?]

 
 Unless you happen to have a 150 foot roll sitting in your fridge and a
 hypering chamber in the basement.   :^)
 Also E200 makes for great astrophotos, and there is also a Fuji
 transparency film that works quite nicely as well.
 For B&W work there are a few films in the 200-400 speed range which
show
 some promise, espescially with the short exposure times required for a
 6" ~f/1.7 Schmidt.
 
 George Anderson
 Montreal Canada
 
 Clear skies and good health
 
 Mark Holm wrote:
 >
 > The problem with the Schmidt idea is that decent astro photo film may
be
 > on the way out.  2415 is already gone.  It's hard to bend ccd's to a
10
 > inch radius.  Probably you need to do a field flattener too. and then
 > find or make a cd camera that has a very compact head, and
prefferably
 > remote heat dump.  Adds quite a bit to the complexity.
 >
 > --
 > Mark Holm
 > mdholm@telerama.com
 > _______________________________________________
 > ATM mailing list http://www.atmlist.net/
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