--- product_id: 377910683 title: "SVBONY 2 inches 90 Deg Dielectric Mirror Diagonal for Astronomical Telescope with 1.25 inches Adapter" brand: "svbony" price: "R3307" currency: ZAR in_stock: true url: https://www.desertcart.co.za/products/377910683-svbony-2-inches-90-deg-dielectric-mirror-diagonal-for-astronomical store_origin: ZA region: South Africa --- # 99% Reflectivity 90° Comfort View Durable Metal Build SVBONY 2 inches 90 Deg Dielectric Mirror Diagonal for Astronomical Telescope with 1.25 inches Adapter **Brand:** svbony **Price:** R3307 **Availability:** ✅ In Stock ## Summary > 🔭 Elevate Your Stargazing Experience! ## Quick Answers - **What is this?** SVBONY 2 inches 90 Deg Dielectric Mirror Diagonal for Astronomical Telescope with 1.25 inches Adapter by svbony - **How much does it cost?** R3307 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/377910683-svbony-2-inches-90-deg-dielectric-mirror-diagonal-for-astronomical) ## Best For - svbony enthusiasts ## Why This Product - Trusted svbony brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Robust Design:** Crafted with solid aluminum housing for long-lasting durability. - • **Unmatched Clarity:** Experience a stunning 99% reflectivity for crystal-clear views. - • **Non-Marring Security:** Brass compression rings protect your valuable eyepieces from damage. - • **Versatile Compatibility:** Easily fits both 2" and 1.25" eyepieces for ultimate flexibility. - • **Future-Proof Performance:** Dielectric surface ensures consistent reflectance that outlasts traditional options. ## Overview The SVBONY 2 inches 90 Deg Dielectric Mirror Diagonal is a premium accessory for astronomical telescopes, featuring a 99% reflectivity dielectric surface, solid aluminum construction, and compatibility with both 2" and 1.25" eyepieces. Designed for durability and optimal performance, it ensures a comfortable viewing angle while protecting your equipment. ## Description SVBONY 2 inches 90 Deg Dielectric Mirror Diagonal for Astronomical Telescope with 1.25 inches Adapter ## Features - Excellent Quality Dielectric Diagonal; Mirror Star Diagonal - 99% Reflectivity；Provides a Comfortable 90 Degree View from your Refractor; Fits Standard 2" (50.8 mm) Diameter Focus Tubes; Use Both 2" (50.8 mm) and 1.25" (31.75 mm) Eyepieces - New 2" 90 deg 99% Dielectric Mirror Diagonal for Telescope With 1.25" adapter; full metal;has a 1/10th wave flat optical glass surface;solid aluminum housing;threaded to accept standard 2" filters;The 2" eyepiece holder uses a non-marring brass compression ring to secure your valuable eyepieces. The 1.25" adapter also has a non-marring brass compression ring - Both sizes of eyepieces may be used and are protected from dings and scratches that would result from a standard set-screw. This 2" diagonal works with any Refractor that accepts a 2" star diagonals. It can also be used with Schmidt-Cassegrain or Maksutov-Cassegrain with an optional 2 inch visual back (See below) - Dielectric diagonal is especially important;A standard aluminized diagonal has about 92% reflectance;And this decreases with time as the aluminum mirror surface ages - For the vast majority of the visible spectrum;the reflectance does not vary more than about 0.1% below 100%;And the dielectric surface does not age like aluminum;This combination leads to the equivalent of a little more light grasp compared to standard diagonals ## Technical Specifications | Specification | Value | |---------------|-------| | Item Weight | 18.67 Ounces | | Objective Lens Diameter | 20 Millimeters | | Item Dimensions D x W x H | 1"D x 1"W x 2"H | | Optical-Tube Length | 50.8 Millimeters | | Coating | [High-Performance Coating] | | Power Source | Diagonal mirror | | Finderscope | Reflex | | Compatible Devices | telescope | | Eye Piece Lens Description | wave flat optical glass | | Mount | 2 inches mount | | Focus Type | Manual Focus | ## Product Details - **Brand:** SVBONY - **Optical tube length:** 50.8 Millimeters - **Eye piece lens description:** Barlow - **Objective lens diameter:** 20 Millimeters - **Telescope mount description:** 2 inches mount ## Images ![SVBONY 2 inches 90 Deg Dielectric Mirror Diagonal for Astronomical Telescope with 1.25 inches Adapter - Image 1](https://m.media-amazon.com/images/I/61MqmBoUSoL.jpg) ![SVBONY 2 inches 90 Deg Dielectric Mirror Diagonal for Astronomical Telescope with 1.25 inches Adapter - Image 2](https://m.media-amazon.com/images/I/61SBLOXmNTL.jpg) ![SVBONY 2 inches 90 Deg Dielectric Mirror Diagonal for Astronomical Telescope with 1.25 inches Adapter - Image 3](https://m.media-amazon.com/images/I/615q6WCpnlL.jpg) ![SVBONY 2 inches 90 Deg Dielectric Mirror Diagonal for Astronomical Telescope with 1.25 inches Adapter - Image 4](https://m.media-amazon.com/images/I/61M0R3ZqWKL.jpg) ![SVBONY 2 inches 90 Deg Dielectric Mirror Diagonal for Astronomical Telescope with 1.25 inches Adapter - Image 5](https://m.media-amazon.com/images/I/610VjaEqu-L.jpg) ## Frequently Bought Together - SVBONY 2 inches 90 Deg Dielectric Mirror Diagonal for Astronomical Telescope with 1.25 inches Adapter - SVBONY SV154 Telescope Eyepiece 2 inch Super Wide Angle Eyepiece 70 Degree 26mm Telescope Accessory SWA Eyepiece for Astronomy Telescope (2 in) - SVBONY Telescope Eyepiece 34mm 2 inches Ultra Wide Angle 72 Degree Telescope Lens HD Fully Coated Telescope Accessory for 2 inches Astronomics --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.za/products/377910683-svbony-2-inches-90-deg-dielectric-mirror-diagonal-for-astronomical](https://www.desertcart.co.za/products/377910683-svbony-2-inches-90-deg-dielectric-mirror-diagonal-for-astronomical) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-04-25*