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Not Returnable
Please note that used items are not returnable.
This is a used collimation eyepiece in excellent condition, with no marks on the body. It comes in its original box, with instructions, which can also be found here.
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.