The Orion Dual-Speed Crayford Refractor Focuser is a specialized unit compatible with five distinct Orion refracting telescopes. It incorporates backlash-free movement and provides an 11-to-1 ...
Engineer and inventor John Wall, inventor of the Crayford Focuser Stargazing Live is back and as part of the Brian Cox-based excitement we're looking at one of the unsung heroes of amateur astronomy - ...
The BARSKA Optics AE11120 Magnus 65ED is an f/6 apochromatic refractor telescope. Its optical system features a fully multicoated triplet lens. The included accessories comprise a 2" Crayford focuser, ...
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