Astronomy Plus 1.25" Cheshire Collimator

A Cheshire collimating eyepiece is a precision tool used to align the optical elements of a telescope, ensuring sharp and accurate views.

It is particularly useful for Newtonian telescopes, where it helps align the primary and secondary mirrors, and can also aid in verifying collimation in Schmidt-Cassegrain telescopes.

By using a sight tube, a central peephole, and a crosshair, it allows users to fine-tune mirror alignment without relying on external light sources.

Technical Specification

In the Box

1.25" Cheshire Collimator (TA12)

Warranty & Manual