William Optics 1.25" Dura Bright Carbon Fiber Dielectric Diagonal

  • Sale
  • Regular price $89.00
  • William Optics 1.25" Dura Bright Carbon Fiber Dielectric Diagonal

    • Sale
    • Regular price $89.00
    • ITEM #

    • 1 available



    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


    Additional Information

    ManufacturerWilliam Optics

    Questions & Answers

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    • I'm looking for a 90* diag. that is correct up and down and left to right. (no reversing) Is this a good choice? thanks

      Unfortunately, no. All 90 degree diagonals that use front surface dielectric mirrors only correct for 1 axis - usually up and down - and leave the other axis reversed, and most prisms also only correct for 1 axis. You would need an Amici Prism, of which o

    • Does this diagonal need an adapter for SCTs?

      Yes, you will need an SCT 1.25" visual back adapter (which comes included with most SCT models) or a 2" adapter with a 1.25" step down adapter to add this diagonal.