Explore Scientific 3" Dielectric-Coated Diagonal Mirror – DD03-01CF

The Explore Scientific 3" Dielectric-Coated Diagonal Mirror (DD03-01CF) is a high-performance optical accessory designed for telescopes with large focusers that require maximum light transmission and wide-field capability. Its dielectric-coated mirror provides up to 99% reflectivity, ensuring bright, sharp, high-contrast images across the field of view—ideal for deep-sky, planetary, and wide-angle observing.

Engineered with a precision double-tapered insert barrel, this 3" diagonal delivers secure seating in the focuser and smooth, reliable handling. The included 2" adapter expands compatibility with a wide range of eyepieces. Compression ring locks on both the 3" and 2" holders secure accessories without marring barrels. Dust covers protect the optical surfaces when not in use. This diagonal is built for observers who demand top-tier optical performance and mechanical stability for large-format telescope setups.

Features

• 3" dielectric-coated mirror with up to 99% reflectivity

• Supports wide-field eyepieces without vignetting

• Double-tapered insert barrel for secure, slip-resistant mounting

• Includes 2" adapter for expanded eyepiece compatibility

• Compression ring locks on both 3" and 2" holders

• High-contrast viewing for deep-sky, lunar, and planetary targets

• Durable optical housing with protective dust covers

Specifications