Thread: Do you think my dew / light shield is long enough?
View Single Post
  #2  
Old 20-05-2014, 03:24 PM
Dennis
Dazzled by the Cosmos.

Dennis is offline 		 
Join Date: May 2005
Location: Brisbane
Posts: 11,823
To minimise the potential of vignetting, I once read about a rule of thumb that suggested the length of the dew shield should be 1 ½ x the diameter of the telescope.

Cheers

Dennis
Reply With Quote