Diagonals

Boost your telescope's performance without buying a new one—simply switch to the Celestron Dielectric Star Diagonal, 2” with Twist-Lock. This top-tier star diagonal allows for maximum light throughput while maintaining...

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...

Boost your telescope's performance without compromising optical quality—introducing the Celestron Dielectric Star Diagonal, 1.25” with Twist-Lock. Consider it the ultimate upgrade to your current star diagonal; you'll experience crisper, more...

The Celestron 1.25” Star Diagonal is designed to fit into the 1.25” focuser of your refractor or catadioptric telescope. It accommodates standard 1.25” eyepieces, making your stargazing experience more comfortable...

Ever wondered if your telescope can double up for daytime use as well as stargazing? Well, if you own a refractor or a Schmidt-Cassegrain telescope (a popular type of catadioptric...

Unlock the Full Potential of Your Telescope with the iOptron 2" Dielectric Mirror Diagonal! Elevate your astronomical observation experience with this high-quality diagonal mirror, designed to enhance your stargazing journey...

Unlock the Full Potential of Your Telescope with the iOptron 1.25" Dielectric Mirror Diagonal! Benefits: Enhanced Image Quality: This diagonal mirror's premium dielectric coatings ensure maximum reflectivity, resulting in sharper,...

The Altair 2" premium diagonal has a CNC machined chassis to hold extra heavy accessories without flexing, a 2" push-fit adapter with non-marring compression ring, and a 99% reflective mirror...

A premium dielectric coated diagonal which is small and compact with very high quality machining and a super-hard black anodised chassis and silver sides. Delivers all the optical and mechanical...

Description The Explore Scientific 2-inch Dielectric-Coated Diagonal Mirror comes complete with 1.25-inch Adapter and dust covers. Solid construction and light weight, this first surface coated diagonal mirror reflects 99% of...

Description The Explore Scientific 3-inch Dielectric-Coated Diagonal Mirror comes complete with 2 inch Adapter and dust covers. Solid construction and light weight, this first surface coated diagonal mirror reflects 99%...