Image of the day

Captured by
Douglas Rollain

M20 Trifid Nebula in LRGBHa

My Account

New to Astromart?

Register an account...

Need Help?

Helical vs. Linear focusers

Started by Larry Seguin, 05/22/2004 03:33PM
Posted 05/22/2004 03:33PM Opening Post
I've been looking at Ed Taychert's 14" T-scope and noticed that it comes standard with a helical crayford focuser. I've always used the linear crayford's in the past. Anybody got any input on the use of helical crayford's? Thanks for any and all feedback!
Larry