SkyWatcher Dedicated eyepiece Collimator for Newtonian, Ø 31,8mm (1 1/4")
The Sky-Watcher Collimation Eyepiece is ideal for precise collimation of Newtonians and refractors with adjustable lenscells. This special eyepiece fits into 1.25" focusers or diagonals. Alignment is easy using the small opening on one end and thin crosshairs on the other end.