View Single Post
  #96  
Old 21-04-2012, 10:14 AM
gregbradley's Avatar
gregbradley
Registered User

gregbradley is offline
 
Join Date: Feb 2006
Location: Sydney
Posts: 16,350
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.

Greg.
Reply With Quote