WebThe Wikipedia entry for the Crayford focuser provides a concise treatment on the history. What makes it elegant is that it is a minimally constrained kinematic design. In a nutshell, unconstrained rigid bodies have 6 degrees of freedom ( translation along each of the three spatial dimensions and rotation about each of the three spatial dimensions). WebJim's Mobile, Inc. (JMI Telescopes) is a world renowned manufacturer of astronomical telescopes and aftermarket accessories for the amateur and professional astronomer. We manufacture telescopes and accessories such as telescope wheels, carrying cases, guiding computers, focusers, motors and motor controls and much more.
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http://www.jimsmobile.com/menu_focusers.htm WebCrayford had done a few of the of the outgoing pre-1974 stacked headlight 'S' class, including a hugely expensive 6.3 V8, 300 SEL Estate. The all new 1974 'S' Class and the Crayford sibling "s" Estate were very advanced cars and the Crayford was retrimmed with Mercedes Benz materials to the point that you could not tell them apart. It was ... WebWelcome to MoonLite Telescope Accessories... A manufacturer of premium automated telescope focusers. We make Crayford style focusers in 2" and 2.5" format sizes. Plus 2 axis worm drive rotating focusers in 3 format sizes 2.5", 3", and 3.5". All of our products are made in house in the US and are designed and machined with modern machining and ... shopwithscrip scam