TELESCOPE Crayford Focusers: A History And Demonstration (How It Works) ( by #reflactor )
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TELESCOPE Crayford Focusers: A History And Demonstration (How It Works) ( by #reflactor )
The Crayford Focuser is everywhere in astronomy. Few people know that it was invented by a modest engineer who gave it away for free... #crayford #telescope #focuser #reflactorguy /// AMAZON AFFILIATE LINKS (Note: I earn a small commission from these links) /// 2" to 1.25" Eyepiece Adapter: https://amzn.to/3WM9dPc Best Smartphone Adapter EVER ...
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