William Optics 1.25" 99% Dielectric Dura Bright Star Mirror Diagonal for Star71 Telescope
Contiguous US Customers:
All items we sell ship for free within the Contiguous US. Shipping will be via the cheapest shipping method which will vary depending on the items in your order. During checkout, you may also be shown other optional faster shipping choices.
US Customers in Hawaii and Alaska:
Free shipping applies to almost all products. A few large telescopes and mounts are excluded from this free shipping offer. For these items, please contact us to obtain a shipping quote before you check out using the online shopping cart.
International Customers:
Free shipping does not apply to international orders. During check-out, you will be presented with several shipping choices and costs. However, the export of some items may be restricted outside the US due to size or manufacturer restrictions.
Product Details
Dedicated 1.25" dielectirc mirror diagonal made especially for use with William Optics' latest Star71-II 71mm f/4.9 apo imaging refractor telescope with M63 threads. Allows you to use this scope visually with any 1.25" eyepiece. Please note that this item will not work with some Gen I Star71 telescopes that have a slightly larger M65 thread.
This 90° 1.25" mirror-type star diagonal has a Dura-Bright mirror with 1/10 or better wave surface accuracy and dielectric mirror coatings for 99% reflectivity which provides higher contrast and resolution during critical planetary, lunar and binary star observations. The diagonal body features a dedicated M63x1 male thread adapter on the telescope side for direct coupling with the M63 female thread on the end of the focuser tube of the Star71-II telescope.
The WO 1.25" Dura-Bright Diagonal for the Star71 telescope 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 mirror substrate flat for optimal image stability.
- Polished to 1/10th wave or better accuracy.
- Accurate design guarantees constant alignment. No further alignment needed.
Meticulous Craftsmanship
- Lock screw for eyepiece/adapter.
- Diagonal is rotatable when attached to telescope.
Strikingly Beautiful
- Patented, elegant design.
- High-quality machining out of the best aluminum.
- Internal anti-reflection baffling for highest contrast.
Other Information
- Country of Manufacture: Taiwan
