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Old 21-04-2012, 10:14 AM
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gregbradley is offline
Join Date: Feb 2006
Location: Sydney
Posts: 16,416
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.

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