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.
