GSO 1.25" 90-deg 99% Dielectric Mirror Diagonal
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:
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Product Details
GSO's new 1.25" dielectric diagonal continues their tradition of offering superb products at excellent prices. This beautiful1.25" mirror diagonal features a BK7 mirror that is precision ground to a flatness of 1/10th wave (minimum) and features dielectric 6-layer enhanced silver coatings with an over-coat protective layer for a light efficiency of over 99% reflectivity across the entire visual spectrum. The clear aperture is 27.9mm.
The mechanics of this diagonal are also top-notch. The robust aluminum body and attachment barrels are precision CNC machined to strict tolerances from solid stock throughout. The 1.25" nosepiece features a safety groove and is threaded to accept standard 1.25" astronomy filters. The 1.25" eyepiece holder does not have a brass compression ring, but it includes an internal safety stop to prevent long barrels on some eyepieces and barlows from hitting the diagonal mirror. The diagonal sports a handsome anodized finish.
The combined result is a superb diagonal offering excellent mechanical and optical quality at a great price. Dielectric coatings are more durable than regular or enhanced aluminum coatings, so you will enjoy years of excellent performance from this product.
The diagonal comes in a nice foam-fitted storage box and includes 2 end caps. Weight = 5.7oz.. Made in Taiwan.
