The Dielectric Star Diagonal features a unique twist-lock mechanism, designed to securely hold any 1.25" eyepieces while maintaining perfect opto-mechanical alignment between the telescope and eyepiece. This innovative twist-lock design eliminates the risk of scratching or engraving the barrel of your eyepieces, a common issue with traditional thumb screws. In addition, the twist-lock mechanism includes an integrated 1.25" barrel stop, providing added protection against potential damage to the mirror from 1.25" accessories with long barrels. The diagonal's mechanical parts are crafted from machined black anodized aluminum, with the exception of the twist-lock rings, which are orange anodized for easy visibility.
The interior of the barrel is threaded and painted flat black to prevent glare, ensuring a seamless and uninterrupted viewing experience. With its advanced features and high-end finishes, the Celestron Dielectric Star Diagonal, 1.25" with Twist-Lock, stands out as one of the highest quality 1.25" star diagonals on the market. Compared to standard star diagonals, this dielectric star diagonal excels in both reflectivity and optical quality. With an over 99% reflective mirror and diffraction-limited optical quality, it guarantees that virtually all the light collected by the telescope reaches the eyepiece without affecting optical performance.
Upgrade your telescope with the Celestron Dielectric Star Diagonal for a superior viewing experience.


