selecting the right focuser draw tube length

[madtuna]

Building a newt, what is the formular for working out the correct drawtube length on your focuser?

many thanks

[Omaroo]

Steve - it's worthy of writing a book about....which is why someone has! :)

If you like, I'll loan you my copy of Krieges' "The Dobsonian Telescope - a practical manual for building large aperture telescopes" if you come to the Forest or Stargard next time around. It explains ALL. :thumbsup:

[madtuna]

thanks for the offer Chris.

I just bought the book :thumbsup:

[Omaroo]

:thumbsup: