[ATM] newt and 75% ray

["Dan Delzell" <dan@bogus.net>]

I keep designing telescope and never building one, but I think I have
finally have a design I can build (I'm not the best wood worker).

 

I've used newt to plot it, and it says that I have vignetting of the 75% ray
at the focuser with 1.25" eye pieces. It looks significant in the focuser
view.  

 

Is this something I should worry about? And how can I change my design to
fix this problem?

 

The scope is a 14" f5 with a 2.6" secondary and low profile focuser. 

 

Thanks. 

_______________________________________________
ATM mailing list http://www.atmlist.net/