Svbony Sv197 Collimating Cheshire Eyepiece, 1.25 Inch Collimation Eyepiece, For Newtonian Reflector Telescope Dash Cameras * Durable & Secure Grip:

* Durable & Secure Grip: Constructed with a soft 180mm silicone rubber grip

Backward compatible with Gigabit and Cat5 networks

Or Exploring Nature

The Customers Gave Us Some Valuable Advice In Using It

Svbony Sv197 Collimating Cheshire Eyepiece, 1.25 Inch Collimation Eyepiece, For Newtonian Reflector Telescope Dash Cameras * Durable & Secure Grip:How To Collimate Telescope With Cheshire Eyepiece: The View Through The Cheshire Eyepiece During The Collimation Will Differ Between Telescopes. For Fast Telescopes (F5 And Below), It Will Be Little Off Center, And For The Slow Telescopes (F5 And Above), The View Will Be More Centered And Easier To Collimate. 1. The Goal Here Is To Center The Primary Mirror Reflection In The Secondary Mirror And Reflection From The Cheshire With The Secondary Mirror.