View Single Post
  #6  
Old 07-08-2015, 05:10 PM
Bassnut's Avatar
Bassnut (Fred)
Narrowfield rules!

Bassnut is offline
 
Join Date: Nov 2006
Location: Torquay
Posts: 5,064
There are 2 kinds of focuser positioning, absolute and relative. Absolute involves encoders or steppers from a home position, relative is simple DC drive. Both work, but have different performance.
Reply With Quote