View Single Post
  #6  
Old 27-04-2007, 07:37 PM
74tuc
Registered User

74tuc is offline
 
Join Date: Sep 2006
Location: Sandy Creek(Sth.Aust.)
Posts: 153
Hi all,

Just to put in my 2 cents worth.

Re: " A $50 eyepiece in a $5,000 telescope gives you a $50 view

A $5,000 eyepiece in a $50 telescope gives you a $50 view

A $500 eyepiece in a $5,000 telescope gives you a million $$$$ view "

Price may not be a good indicator as to how well a 'scope/eyepiece might perform.
One needs to consider the f# of the optics. A $65 orthoscopic will give one million dollar views with a good F10 newtonian (say $2000). A $1000 Nagler of long focal length may give terrible views with an F4 16" newtonian because of the normal off axis aberrations - the larger the newtonian mirror the greater will be the coma.

Jerry.
Reply With Quote