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Old 22-04-2012, 09:18 AM
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soundworthy (Michael)
Digital Audio Sculptor

soundworthy is offline
Join Date: Apr 2009
Location: Ballina
Posts: 34
Originally Posted by gregbradley View Post
There's a 5D2 on Astromart for $2000 thats been modified with Astrodon replacement filter. The sample images are fabulous.

There is no substitute for a large sensor but it does place demands on the scope. You need a focuser and scope that has a large enough corrected circle to illuminate the sensor without coma. Usually that also means using a flattener and 3 inch focusers or larger. Some report success with 2.7 inch focuser so it may depend on scope model.

I'm going to get the P-FLAT68, but why a 3inch focuser?
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