Diagonals

Features Fits telescopes with 1.25" focusers or visual backs, 90° viewing angle, best for observing objects overhead Accepts standard 1.25" eyepiec...

The 1.25" Mirror Diagonal is a must-have accessory for astronomers, providing a comfortable viewing angle and improved image quality during telesc...

The 1.25" 99% Dielectric Twist-Lock Diagonal is an essential upgrade for astronomers seeking the best in optical performance and convenience. This...

The 2" 99% Dielectric Twist-Lock Diagonal is an essential upgrade for astronomers seeking the best in optical performance and convenience. This pre...

The David Astro Penta Prism 90-Degree Diagonal is a non inverting non reversing diagonal. It’s particularly suited for use with the David Astro Pre...

The Explore Scientific 2-inch Dielectric-Coated Diagonal Mirror comes complete with 1.25-inch Adapter and dust covers. Solid construction and light...

The Explore Scientific 3-inch Dielectric-Coated Diagonal Mirror comes complete with 2 inch Adapter and dust covers. Solid construction and light we...

45-degree erecting prism for 1.25" telescope eyepieces Provides correct image orientation for terrestrial and astronomical viewing Des...

90-degree erecting prism for 1.25" telescope eyepieces Provides correct image orientation for terrestrial and astronomical viewing Des...

High-quality 1.25" diagonal for refractor and catadioptric telescopes 99% reflectivity dielectric coating for maximum light transmission ...

High-quality 2" diagonal for refractor and catadioptric telescopes 99% reflectivity dielectric coating for maximum light transmission ...

1.25" erecting prism for correct image orientation Silver-finished design specifically for RedCat telescopes Description The W...