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This is a used WO 2" Durabright Dielectric diagonal, including the 1.25" adapter. It is in excellent condition, with clean optics and body. Includes both dust caps, and the original box.
The William Optics Dura-Bright diagonal - a dramatic step forward in the evolution of mirror diagonals!
This 90° 2"mirror-type star diagonal has a Dura-Bright 12mm thick mirror and dielectric mirror coatings for 99% reflectivity which provides higher contrast and resolution during critical planetary, lunar and binary star observations.
The WO 2" 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 1/12th wave accuracy*.
• Accurate design guarantees constant alignment. No further alignment needed. • Threaded for 48mm 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
• Internal safety stop prevents 2" barrels from hitting the mirror.