Tag: Newtonian telescope

Image 1: Catseye XLKPs are available in extended lengths of 1.0, 1.5, 2.0 and 2.5 inches, in addition to the original pictured on the right.

Catseye Collimation Extended-Barrel XLKPs Telescope Collimation Tools Are Now Available

Newtonian astrograph telescope users can now confidently take autocollimator focuser-axis alignment to the next level of precision without the need of a focuser drawtube extension. By design, Newtonian astrographs incorporate a “back-focus” position of the primary mirror’s native focal plane to facilitate image focus at the camera CCD chip. To […]