William Optics 1.25 Inch Dielectric Diagonal

Catalog description

William Optics 1.25 Inch Dielectric Diagonal, part number WIOP016, is a discontinued product from the 2007–2011 catalog. It was last listed at $88.00, up from a low of $78.00.

You do not have to renounce having a quality 1.25 diagonal! Built like the renowned 2 WO diagonal this dielectric coating diagonal will give you all you need for a lifetime of observations with the highest achievable brightness contrast and sharpness. A premium product at a discounted price. Check it out and see the difference between a budget diagonal and a real bargain!

Top-notch Performance and BrightnessDielectric coating allows 99% reflectivity.10mm thick substrate flat for optimal image stability.

Polished to 1/10th wave accuracyPre-coated Flat AccuracyAccurate design guarantees constant alignment. No further alignment neededMeticulous CraftsmanshipLock screw for eyepiece/adapterBig knurled thumbscrews easy to turn even with gloves onStrikingly BeautifulPatented elegant designPatentedHigh-quality machining out of the best aluminumReal Carbon Fiber side platesInternally antireflection threaded for highest contrastSuperbly ConstructedCompression ring to prevent barrels’ marringInternal safety stop prevents 1.25” barrels from hitting the mirrorWhy W.

O. diagonals do not feature an Adjustable alignment system?

Having an adjustable alignment system is an admission that the diagonal can go out of collimation due to poor mechanical construction. Thanks to the patented design of WO diagonals you will always have a diagonal that performs perfectly like the first day you got one!

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