Thread: Barnard's Loop
View Single Post
  #5  
Old 08-12-2013, 02:34 PM
Stefan Buda
Registered User

Stefan Buda is offline
 
Join Date: Jul 2013
Location: Melbourne, VIC
Posts: 974
Hi Richard,

I think the problem is astigmatism caused by the aperture mask being at the wrong place. A complex objective such as a camera lens must have the aperture diaphragm somewhere between the various lens elements, in order to work properly.
Other than that I like the image.

Cheers,

Stefan

Last edited by Stefan Buda; 08-12-2013 at 02:36 PM. Reason: Extra word
Reply With Quote