William Optics 90° 2″ Diagonal Mirror Dura Bright

With the William Optics 90° Dura Bright zenith mirror you get the best out of your telescope. You notice it immediately: your image becomes brighter, more contrasty and much quieter than with a standard diagonal. This is due to the extremely high 99% reflection, allowing almost all the light captured to actually reach your eye. This keeps details visible even at high magnification.

The thick 12 mm mirror ensures stable images even when the temperature changes. You don't have to worry about distortion or blurring. It just stays sharp. The 1/12 lambda accuracy means the mirror surface is exceptionally flat, so your image remains clean and tight.

The housing combines aluminum with carbon fiber. This not only looks beautiful, but also makes the diagonal strong and light. The ring clamp holds your eyepieces securely without scratching, while the filter thread ensures that you can use filters safely and directly. The included 2″ to 1.25″ adapter makes it easy to switch between eyepiece sizes.

This is a diagonal that really lifts your image quality. No fine-tuning, no fuss. Just insert, secure and enjoy a clear and comfortable 90° image.

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