William Optics 2" Dura-Bright 99% Diagonal for SCT (Carbon Fiber)

William Optics 2" Dura-Bright 99% Diagonal for SCT (Carbon Fiber)

Description:
The William Optics 2" Dura-Bright diagonal for SCTs is a premium accessory crafted for the most demanding observers. It connects directly to standard SCT rear threads (2"x24 TPI) and ensures perfect optical alignment with zero need for realignment.

It features a 12mm-thick mirror polished to 1/12 wave or better, with 99% dielectric coating — ideal for high-contrast planetary, lunar, and binary star observations. The side panels are made of genuine carbon fiber, combining structural reinforcement with elegant aesthetics.

Precision-machined from high-grade aluminum, the diagonal includes integrated compression rings (on both 2" diagonal and 1.25" adapter) to prevent marring. An internal safety stop protects the mirror from barrel impact. Anti-reflection baffling inside the housing ensures maximum contrast during observations.

Technical specifications:
– Type: 90° dielectric mirror diagonal
– Size: 2" (50.8 mm)
– Reflectivity: 99%
– Mirror: 12mm thickness, 1/12 wave accuracy
– Thread: SCT female 2" (24 TPI)
– Finish: precision aluminum + real carbon fiber
– Compression rings: on 2" and 1.25" adapters
– Internal baffles: yes
– Weight without adapter: 15.8 oz (448 g)
– Weight with adapter: 1 lb 2.7 oz (522 g)

Additional information:
Includes 1.25" eyepiece adapter with compression ring and large knurled thumbscrews. Designed exclusively for SCT telescopes.