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WILLIAM OPTICS 2
❖ William Optics 2" Dura-Bright Dielectric Star Diagonal
This 90° 2" mirror-style star diagonal includes a Dura-Bright 12 mm thick mirror and dielectric coatings that deliver 99% reflectivity, resulting in enhanced contrast and sharpness for demanding planetary, lunar, and double-star observations.
Dura-Bright incorporates genuine carbon fiber side panels, offering both durability and a premium aesthetic for your telescope.
The WO 2" Dura-Bright Diagonal is engineered with multiple distinctive features to ensure exceptional performance and long-lasting reliability.
❖ Top-Notch Performance and Brightness
Dielectric coating provides 99% reflectivity.
High-precision 12 mm thick mirror substrate ensures excellent image stability.
Polished to an accuracy of 1/12th wave*.
Precise construction maintains perfect alignment—no adjustments required.
❖ Meticulous Craftsmanship
Includes a 2" to 1.25" eyepiece adapter.
Locking screw secures the eyepiece/adapter in place.
Large, knurled thumbscrews allow easy handling even when wearing gloves.
Compression rings on both the diagonal and adapter protect eyepiece barrels from scratches.
Built-in safety stop prevents 2" barrels from contacting the mirror.
Designed for high-end telescopes like the FLT-98, FLT-110, GT/GTF102, and FLT-132.
Optional SCT adapter available.
SCT ring enables use with SC telescopes or the ZS66 series. Buy Now
❖ Why Don’t W.O. Diagonals Use an Adjustable Alignment System?
Incorporating adjustable alignment implies the diagonal may lose collimation due to inferior mechanical design. With the patented William Optics construction, your diagonal remains perfectly aligned-just as it was on the day you received it.