Crayford focuser

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English[edit]

English Wikipedia has an article on:
Wikipedia

Etymology[edit]

It was initially demonstrated to the Crayford Manor House Astronomical Society.

Noun[edit]

Crayford focuser (plural Crayford focusers)

  1. A simplified focusing mechanism for amateur telescopes, having a smooth spring-loaded shaft which holds the focus tube against four opposing bearing surfaces, and controls its movement.
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