William Optics 1.25" DURA BRIGHT Dielectric Diagonal

1.25" DURA BRIGHT Dielectric Diagonal 

Introducing New model William Optics Dura-Bright diagonal - a dramatic step forward in the evolution of mirror diagonals!

This 90° 1.25"mirror-type star diagonal has a Dura-Bright  thick mirror and dielectric mirror coatings for 99% reflectivity which provides higher contrast and resolution during critical planetary, lunar and binary star observations.

Dura-Bright features 100% real carbon fiber side plates that add that touch of class your scope deserves.

The WO 1.25" Dura-Bright Diagonal was designed with several unique features to provide optimum performance and years of use.

Top-Notch Performance and brightness

• Dielectric coating allows 99% reflectivity.

• high precision 12mm thick mirror substrate flat for optimal image stability.

• Polished to 1/10th wave accuracy*.

• Accurate design guarantees constant alignment. No further alignment needed.

Meticulous Craftsmanship

• Lock screw for eyepiece/adapter.

• Big, knurled thumbscrews are easy to turn even with gloves on.

• Threaded for 1.25" Filters

Strikingly Beautiful

• Patented, elegant design.

• High-quality machining out of the best aluminum.

• Internal antireflection baffling for highest contrast.

• Real Carbon Fiber side plates

Superbly Constructed

• Compression rings (both on diagonal and adapter) to prevent barrels from marring.

• Internal safety stop prevents 1.25" barrels from hitting the mirror.

• Designed for high-end scope