Thread: Dob Dew
View Single Post
  #38  
Old 30-04-2005, 09:51 AM
ausastronomer (John Bambury)
Registered User

ausastronomer is offline
 
Join Date: Mar 2005
Location: Shoalhaven Heads, NSW
Posts: 2,620
Quote:
Originally posted by Starkler
A sub aperture mask isnt required and just needs to be big enough to direct air toward the upper edge of the mirror to create turbulence and it will give the desired effect.
Geoff,

I am aware of that but I want to try the sub aperture mask to eliminate the diffraction noise off the mirror clips, I already have the problem solved for the boundary layer.

CS-John B

Last edited by ausastronomer; 30-04-2005 at 09:54 AM.
Reply With Quote