Explore Scientific 99% Reflective 3" Diagonal

The Explore Scientific 99% Reflective 3" Diagonal is a dielectric-coated mirror diagonal built for telescope owners who want the brightest possible view without light loss at the eyepiece. It suits visual astronomers running larger refractors or reflectors who need a solid, light-weight diagonal that won't loosen over time. A double-taper barrel and compression-ring eyepiece locks keep the setup secure through eyepiece changes.

• 99% Reflective Dielectric Coating: The first-surface dielectric coating reflects 99% of incoming light for the brightest possible image.
• Double-Taper Insert Barrel: A double-taper barrel inserts and withdraws smoothly, and its wide end prevents the diagonal from falling out if the set screw loosens.
• Compression Ring Eyepiece Lock: Both the 2" and 1.25" eyepiece holders secure eyepieces with a compression ring lock (1.25" holder sold separately).
• Includes 2" Adapter and Dust Covers: Ships complete with a 2" adapter and dust covers.