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How To Collimate a Telescope? A Beginner's Guide
How To Collimate a Telescope? A Beginner's Guide
A Beginner's Guide to Collimation - Gary Seronik
Star testing collimating - perfect circles? - Getting Started General Help and Advice - Stargazers Lounge
How to Align Your Newtonian Reflector Telescope | Sky & Telescope - Sky & Telescope
Help? Used telescope for the 1st time last night and it was amazing but the secondary mirror was obstructing my view. Have i done something wrong when setting it up? Or is