In the world of telescope gear, a diagonal is more than just an accessory—it's an essential component that significantly impacts the clarity of the celestial objects you observe. If you're keen on using 2” eyepieces for your stargazing sessions, a 2” diagonal is a must-have. The benefit of the larger barrel size is that it lets you capture more of your telescope's light cone, offering particular advantages for viewing dim deep-sky objects.
Engineered for optimal performance, the Celestron 2” Mirror Diagonal is crafted with precision in mind. Its housing is meticulously machined to ensure that the optical components remain in perfect alignment. For assurance in quality, the diagonal’s mirror undergoes interferometric testing and is guaranteed to have at least a 1/10 wave rating or better. To enhance image sharpness and brightness, the mirror is coated with Celestron’s top-tier XLT coatings—the same ones found on their premium telescopes.
If you own a standard Schmidt-Cassegrain telescope, this 2” diagonal will thread securely onto its rear cell. For maximizing light capture, simply pop a 2” eyepiece into the diagonal's barrel. If your setup includes 1.25” eyepieces, don’t worry; the diagonal comes with a 2” to 1.25” adapter that can be secured with a thumbscrew. And for times when you’re not out admiring the cosmos, the diagonal can be safely stored in its provided aluminum case.
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