Thread: What's the best field flattener for DSLR?
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Old 04-08-2009, 10:20 AM
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Kal (Andrew)
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Join Date: Nov 2006
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Actually I should mention that both the RC and the ACF still have field curvature (their designs eliminate coma).

The new Celestron EdgeHD SCT scopes are coma free and flat field, but the prices in Australia are ridiculous.
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