Make your own autofocuser
Nice DIY tool for creating bahtinov mask for your scope.
Live View Focusing for DSLRs
A brief FocusMax tutorial
Improved Bahtinov mask – String Bahtinovs
The absolute BEST focusing aid. Achieving critical focus is now so easy that a child could do it.
The use of a Bahtinov Mask ss preferred method for achieving critcal focus
What Is Focus?
Detailed tutorial provides methodology for obtaining deep space images
Author claims that knife edge focusing is really the best way
Good guide on the acquisition process
Excellent information by Jerry Rodrigues
Focusing options for SCTs by sctscopes.net
Detailed document on Focusing & Binning
Nice explanation on how to focus
Jerry Lodriguss on Focusing