Astronomy Plus Chesire Telescope Collimation Eyepiece (long style)

This long-style collimator is a precision alignment tool designed for Newtonian and Dobsonian telescopes, offering enhanced visibility and accuracy thanks to its extended length. Crafted from CNC-machined aluminum, it provides a robust and lightweight solution for telescope collimation without the need for batteries or electronics.

Ideal for both beginners and experienced astronomers, this tool typically functions as a Cheshire-style eyepiece or combination sight tube and Cheshire, giving you clear visual cues to align your secondary and primary mirrors. The longer body increases sighting accuracy by offering a more stable optical axis and better alignment reference, especially useful on telescopes with longer focal lengths or larger secondary mirrors.

The internal reflective surface and central peephole allow precise collimation using ambient light, while the durable aluminum construction ensures long-lasting performance in the field or observatory. Whether you're star-testing or preparing for a high-power planetary session, this tool helps you achieve the sharpest possible image through careful optical alignment.

A must-have for serious observers who value mechanical simplicity and optical precision.

In the Box

Astronomy Plus Telescope Collimation Eyepiece (long style)

Warranty

Astronomy Plus Warranty