Cheshire collimating eyepiece for accurate alignment of any Newtonian reflector telescope mirrors, ideal for ensuring the best optical alignment. Accurate collimation is essential for ensuring the best performance from reflector telescopes, this quality easy to use Cheshire eyepiece is the recommended way to achieve this. This collimation aid is also useful for aligning refractor optics very accurately.
Precision machined from aluminium with fine crosshairs and a clear bright mirror at 45 degrees with sighting hole
A superb eyepiece that came with my 10 inch GSO telescope, it gives you wonderful views of The Pleiades etc. and other night sky wonders, it is an excellent eyepiece in my opinion.