Mirror misaligned? The Collimation Eyepiece will help your realign your OneSky or any neutonians or Schmidt-Cassegrain scopes. Easy to use, fits into the eyepiece.
The Celestron Cheshire Collimation Eyepiece is ideal for precise collimation of Newtonians and helpful for aligning Schmidt-Cassegrains. This special eyepiece fits into 1¼" focusers or diagonals.
Alignment is easy using the small opening on one end and thin cross hairs at the other end. The collimation eyepiece is more accurate than the simple Collimation Tool.
