Electric Martini

Diagonals and Prisms

William Optics 2 Inch Dielectric Diagonal

WIOP018 Diagonals and Prisms Discontinued

$139.00Last catalog price, September 2007

Catalog description

William Optics 2 Inch Dielectric Diagonal, part number WIOP018, is a discontinued product from the 2007–2011 catalog. It was last listed at $139.00.

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. SpecificationsDielectric coating allows 99% reflectivity.10mm thick substrate flat for optimal image stability. Polished to 1/10th wave accuracyAccurate design guarantees constant alignment. No further alignment needed.2 to 1.25 eyepiece adapter included. Lock screw for eyepiece/adapter.

Big knurled thumbscrews easy to turn even with gloves on.

Patented elegant designHigh-quality machining out of the best aluminumInternally antireflection threaded for highest contrastCompression rings (both on diagonal and adapter) to prevent barrels marringInternal safety stop prevents 2 barrels from hitting the mirror

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