William Optics 1.25″ Dura Bright Carbon Fiber Dielectric Diagonal

Introducing the new William Optics Dura Bright diagonal – a dramatic step forward in the evolution of mirror diagonals! This 90-degrees 1.25-inch mirror-type star diagonal has a Dura Bright thick mirror and dielectric mirror coatings for 99-percent reflectivity which provides higher contrast and resolution during critical planetary, lunar and binary star observations. Dura Bright features 100-percent real carbon fiber side plates that add that touch of class your scope deserves. The William Optics 1.25-inch 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-percent reflectivity.
• High precision 12 mm thick mirror substrate flat for optimal image stability.
• Polished to 1/12th 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 anti-reflection 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 2″ barrels from hitting the mirror.
• Designed for high-end scopes.

OPT Product Number: WO-D-125D-C-DB

• William Optics 1.25″ Carbon Fiber Dielectric Diagonal
• Dielectric coating allows 99-percent reflectivity
• High precision 12 mm thick mirror substrate flat for optimal image stability
• Polished to 1/12th wave accuracy