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Ritchey Chretien's and image curvature.
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11-07-2009, 01:32 PM
Satchmo
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Join Date: Dec 2005
Location: Sydney
Posts: 1,879
If someone can give me an approx. figure for backfocus ( primary to focal plane) and the seperation from primary to secondary, I can reverse engioneer the design and post some raytrace spot diagrams without a field flattener.
Satchmo
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