William Optics
William Optics 2" 90° Dura Bright Dielectric Diagonal
William Optics 2" 90° Dura Bright Dielectric Diagonal
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This 90° 2"mirror-type star diagonal has a Dura-Bright 12mm thick mirror and dielectric mirror coatings for 99% reflectivity which provides higher contrast and resolution during critical planetary, lunar and binary star observations.
Dura-Bright features 100% real carbon fiber side plates that add that touch of class your scope deserves.
The WO 2" Dura-Bright Diagonal was designed with several unique features to provide optimum performance and years of use.
Top-Notch Performance and brightness
- Dielectric coating allows 99% reflectivity.
- high precision 12mm thick mirror substrate flat for optimal image stability.
- Polished to 1/12th wave accuracy*.
- 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 are easy to turn even with gloves on.
- Threaded for 48mm Filters
Strikingly Beautiful
- Patented, elegant design.
- High-quality machining out of the best aluminum.
- Internal antireflection baffling for highest contrast.
- Real Carbon Fiber side plates
Superbly Constructed
- Compression rings (both on diagonal and adapter) to prevent barrels from marring.
- Internal safety stop prevents 2" barrels from hitting the mirror.
- Designed for high-end scope such as FLT-98, FLT-110 , GT/GTF102 and FLT-132.
SCT adapter is optional
SCT ring makes your diagonal work on SC telescopes or our ZS66 series as well!
Why 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 as perfectly as on the first day you got it!
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Research It
Find the product you want.
Talk to Us
Get expert guidance fast.
We Source It
Delivered within 4 weeks.
Enjoy It
Be happy with your gear.
Got a question?
what we get asked most often
Are the prices all-inclusive?
Yes. The price you see is the price you'll pay. All taxes are included. Free shipping on all orders.
What's the stock status of the products on your site?
We list only in-stock items on our website that can be shipped right away. Sold out products are out of stock, so you can't place an order.
Selected products are available for Preorder, with a guaranteed delivery within 30 days or your money back.
How fast do you ship?
We process and ship all orders within two business days. Shipping time is determined by the speed of the shipping partner.
Is there a guarantee on your products?
Yes. On top of the manufacturer's warranty, we also offer a Replacement Guarantee on all online orders. In the event that the product is defective or damaged during shipping, you will receive a replacement.
Can I cancel my order?
We'll refund you 90% if you cancel before dispatch. Cancellations after dispatch are complicated. Take a look at the our Policy here
What's your return policy?
We have strict return/refund policies as a company that deals with fragile products. Casual returns are not permitted. Items that are not damaged in transit or defective cannot be returned.So please take a moment to review our Refund Policy.
Could I order something that's out of stock or not listed?
If you are interested in ordering an out-of-stock item, click the "notify me" button. You will be notified when the item is back in stock.
To source a specific product for you, our team needs more information. Specific orders will be subject to case-by-case terms and conditions.
