If what you are looking for is the highest achievable brightness, contrast and sharpness during critical observations with high-end instruments, WO 90° 2" mirror Dielectric star Diagonal is your choice. A premium product at a discounted price!

TOP-NOTCH PERFORMANCE AND BRIGHTNESS

• Dielectric coating allows 99% reflectivity.
• 10mm thick substrate flat for optimal image stability.
• Accurate design guarantees constant alignment. No further alignment needed.

METICULOUS CRAFTSMANSHIP

• 2" to 1.25" eyepiece adapter included.
• Lock screw for eyepiece/adapter.
• Big, knurled thumbscrews easy to turn even with gloves on.

STRIKINGLY BEAUTIFUL

• Patented, elegant design.
• High-quality machining out of the best aluminum.
• Internally antireflection threaded for highest contrast.

SUPERBLY CONSTRUCTED

• Compression rings (both on diagonal and adapter) to prevent barrels' marring.
• Internal safety stop prevents 2" barrels from hitting the mirror.