1.25'' Cheshire Collimation Eyepiece with Crosshair for Newtonian SCT Telescope

The Collimating Eyepiece is a combination of a “sight tube” and a “Cheshire eyepiece.”. A Cheshire eyepiece has a polished flat set in the barrel at a 45° angle, which directs light entering from a cutout in the side of the barrel down into the optical path.

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