Introducing the New William Optics 2015 Dura-Bright diagonal - a dramatic step forward in the evolution of mirror diagonals!
This 90° 2" mirror diagonal has a Dura-Bright 12mm thick mirror, 1/12 or better wave surface accuracy, and dielectric mirror coatings for 99% reflectivity which provides higher contrast and resolution during critical planetary, lunar and binary star observations. Features an SCT threaded adapter (2"x24 TPI female thread) for direct attachment to standard SCT telescopes.
Dura-Bright features 100% real carbon fiber side plates that add that touch of class your scope deserves.
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.
- 2" to 1.25" eyepiece adapter included.
- Lock screw for eyepiece/adapter.
- Big, knurled thumbscrews are easy to turn even with gloves on.
- Patented, elegant design.
- High-quality machining out of the best aluminum.
- Internal anti-reflection baffling for highest contrast.
- Real Carbon Fiber side plates
- Compression rings (both on diagonal and adapter) to prevent barrels from marring.
- Internal safety stop prevents 2" barrels from hitting the mirror.
- Designed for SCT telescopes
- Weight (without 1.25" adapter) = 15.8oz.
- Weight (with 1.25" adapter) = 1lb-2.7oz.