The Crayford Focuser and DIY Focuser for Homemade Telescope

1,593

3

1

The Crayford focuser is a simplified focusing mechanism for amateur astronomical telescopes. Crayford focusers are considered superior to entry-level rack and pinion
focusers, normally found in this type of device. Instead of the rack and pinion, they have a smooth spring-loaded shaft which holds the focus tube against four opposing bearing surfaces, and controls its movement. It is named after the Crayford Manor House Astronomical Society, Crayford, London, England where it was invented by John Wall, a member of the astronomical society which meets there. The original Crayford Focuser is on display there.

I do it with aluminium alloy, aluminium tube and nice work

More Homemade Refractor Telescope DIY Erecting Prism Binoviewer Focuser here:

Share

    Recommendations

    • Arduino Contest 2019

      Arduino Contest 2019
    • Tape Contest

      Tape Contest
    • Trash to Treasure

      Trash to Treasure

    Discussions