View Single Post
  #52  
Old 29-04-2012, 06:38 PM
bratislav (Bratislav)
Registered User

bratislav is offline
 
Join Date: Aug 2006
Location: Europe
Posts: 235
Quote:
Originally Posted by Moon View Post
Better optics would be nice, but it's down the list. For now I'll just pretend its as good as the test report posted by Dave.
James
James,

no need to pretend or guess. That is why Roddier invented his test. Capturing extrafocal images of a star is rather trivial nowadays, and I'm quite good at running the test.
Next best thing to a proper interferogram, that's for sure. No guessing involved one bit.

(attached analysis of Stefan's 16" D-K in average seeing)
Attached Thumbnails
Click for full-size image (16DK_roddier.JPG)
120.9 KB74 views
Reply With Quote