Upgrade Your Old Diagonal With a 2" SizeCelestron Dielectric Diagonal with Twist-Lock! Enjoy better views through your telescope with this premium diagonal featuring diffraction-limited optics and 58 layers of dielectric coatings! The Celestron 93573 Diagonal provides a 90° viewing angle, perfect for more comfortable viewing through refractor and Cassegrain-type telescopes. Dielectric coatings create a stunning 99% reflective surface, ensuring the maximum amount of light collected by the telescope reaches the eyepiece. Celestron orange twist-lock mechanism on the eyepiece side keeps the barrel centered in the diagonal to provide better optical alignment. The Celestron 2" Dielectric Diagonal accepts eyepieces, Barlow lenses, threaded filters, and other accessories with a 2” barrel. Caps are provided for both ends of the diagonal to keep these quality optics clean when they are not in use and stored. The Celestron twist-lock eyepiece holder secures eyepieces while keeping them centered in the diagonal, thus providing best opto-mechanical alignment between the telescope and eyepiece. Unlike traditional thumb screws, the twist-lock cannot scratch or engrave the barrel of your eyepieces. This Celestron 2" Twist-Lock Dielectric Mirror Diagonal has an integrated 2” barrel stop that prevents 2” accessories with long barrels from damaging the mirror. All the diagonal’s mechanical parts are made of machined black anodized aluminum, except the twist lock rings, which are orange anodized for visibility. The interior of the Schmidt-Cassegrain adapter and 2” barrel are glare threaded and painted flat black to prevent unwanted reflections. With all its features and these high-end finishes, the Celestron Dielectric Star Diagonal, 2” with Twist-Lock connection is a mirror diagonal which will serve your observing well for many years. This diagonal also comes with two interchangeable barrels to provide flexibility in connecting the diagonal to a wide variety of telescopes without the need for additional adapters. A standard 2” barrel is included. For Schmidt-Cassegrains (SCTs) that use a threaded connection to the focuser, a barrel with SCT threads is included. Both barrels thread onto the diagonal housing, providing a secure and safe connection.
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