To: atm{at}shore.net
From: kwhitefire{at}juno.com
Reply-To: kwhitefire{at}juno.com


I played around with field sizes for the cass and greg section of my scope
optics.  It appears that I can use a large focuser, say 3" diameter. 
I know of no eyepieces that have this large format.  The f/D's of the cass
and greg systems are 18 and 37.  Do 3" diameter eyepieces exist?  If
so, where can I get them?  If not, what configuration would I use?  I know
Plossls are easy enough to build, but considering the huge field, would
something else be more appropriate?  The field size is .7 degrees total.

Kevin of Eastern Iowa
Seeker of the Darkness




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