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William Optics 2" Durabright RotoLock Diagonal - D-DIG2D-ROTO-A2


William Optics 2” Rotolock Durabright Diagonal

William Optics is famous for their diagonals, and with products like the Rotolock Durabright 2 inch Diagonal, it’s easy to see why!

Heavy-Duty Construction and Quality Materials

This William Optics 90-degree diagonal is machined out of the best aluminum and black anodized for strength and beauty. The inside of the diagonal has anti-reflection baffling to keep internal reflections at bay and preserve high contrast. To kick it up a notch, William Optics has added side plates made of real carbon fiber to the Rotolock Durabright Diagonal. Other features of the diagonal body include 48 mm threads so that you can attach 2” filters to the diagonal itself, and an internal safety stop that prevents 2” eyepiece or accessory barrels from accidentally hitting the diagonal’s mirror.

Dielectric Coatings Yield 99% Reflectivity

The WO 2” Durabright Rotolock Diagonal includes a 12mm thick precision ground flat that is polished to 1/12th wave accuracy. Dielectric coatings on the mirror allow for 99% reflectivity, giving you high resolution, high contrast images. You’ll also be happy to know that the mirror will not shift in its cell and require adjustment. William Optics has a patented design process that ensures constant alignment from day one.

RotoLock Holds Your Accessory Firmly in Place in the Center of the Adapter

Lock your camera, eyepiece, or other barreled astronomy accessory firmly in place with the William Optics RotoLock Adapter System! Just rotate the adapter ring clockwise to lock any inserted accessory, or rotate the ring counter-clockwise to unlock the adapter and release the accessory. The innovative design of the RotoLock Adapter not only ensures a tight hold on your accessory, but it will be perfectly centered every time.

1.25” Adapter and SCT Adapter Available - Sold Separately

If you will be using accessories with a 1.25” barrel, you will need to purchase an adapter for this 2” diagonal. Also, if you have an SCT telescope, or a ZS66 from William Optics, you can also buy an SCT adapter. Without these adapters, this William Optics Durabright Rotolock Diagonal will attach to refractors with 2” focusers, and accept 2” eyepieces or accessories on the Rotolock side.