--- product_id: 390297351 title: "SVBONY SV193 Focal Reducer 2 Inch 0.8X Field Flattener Telescope Accessory for SV503 80mm F7 ED Telescope" brand: "svbony" price: "262892₫" currency: VND in_stock: true reviews_count: 5 url: https://www.desertcart.vn/products/390297351-svbony-sv193-focal-reducer-2-inch-0-8x-field-flattener store_origin: VN region: Vietnam --- # Supports full-frame cameras 0.8x focal reducer for wider FOV Aluminum alloy durable build SVBONY SV193 Focal Reducer 2 Inch 0.8X Field Flattener Telescope Accessory for SV503 80mm F7 ED Telescope **Brand:** svbony **Price:** 262892₫ **Availability:** ✅ In Stock ## Summary > 🌌 Capture the cosmos in ultra-wide, crystal-clear brilliance — don’t let the stars wait! ## Quick Answers - **What is this?** SVBONY SV193 Focal Reducer 2 Inch 0.8X Field Flattener Telescope Accessory for SV503 80mm F7 ED Telescope by svbony - **How much does it cost?** 262892₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/390297351-svbony-sv193-focal-reducer-2-inch-0-8x-field-flattener) ## 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 - • **Lightweight Yet Rugged:** Hard anodized aluminum body ensures durability without weighing down your setup. - • **Optimize Exposure Time:** Shortens exposure duration, letting you capture stunning deep-sky images faster and with less noise. - • **Pinpoint Star Sharpness:** Advanced 3-element, 2-group FMC lens design eliminates edge distortion for flawless astrophotography. - • **Expand Your Cosmic Canvas:** 0.8x focal reducer widens your field of view, capturing more celestial wonders in a single frame. - • **Seamless Camera Integration:** M48x0.75 threaded back connects effortlessly to full-frame cameras and filter wheels. ## Overview The SVBONY SV193 is a premium 2-inch 0.8x focal reducer and field flattener designed for refractor telescopes like the SV503 80mm F7 ED. Featuring a 3-element, 2-group fully multi-coated lens system housed in a durable anodized aluminum body, it reduces focal length for a wider field of view and faster exposures while eliminating star distortion at the edges. Compatible with full-frame cameras and 2-inch filters, it’s an essential astrophotography accessory that enhances image quality and efficiency. ## Description The SV193 focal reducer's default back-intercept is 55mm. Using the 360° field rotator at the end of the focusing tube(sold separately ), you can meet your composition requirements without turning the main lens, and it can also meet the use of filter wheel/OAG/astronomical camera at the same time. 3-Elements 2Groups Lens Structure and FMC Lens Coating Fully multi-coated optics housed in a high polish, high transmittance to achieve clear and sharp views. Solid metal construction Aluminum alloy material;strong sturdy and durable.Hard anodized finish aluminum body to help reduce weight. Specification: Backfocus:55mm Barrel Size: 2-inch Threads Standard: M48*0.75 Lens Structure: 3-Elements/2Groups Lens Coating: FMC Blackened Lens Edges: Yes Net Weight: 164g / 5.78oz / 0.36lb Package Includes: 1X SVBONY SV193 0.8x Photo Reducer / Flattener 2X Rubber Dust Cover Review: This is a "must have" for the SVBONY SV503 80ED and the 70ED. On the 70ED telescope, it drops the focal ratio from f/6 to f/4.8 for a wider field of view and slightly brighter (faster) image. With the 70ED, I was able to get the entire Pleiades cluster on my ZWO ASI183MC Pro camera sensor with almost zero vignetting. Review: Complemento para el telescopio Svbony SV503 80mm, monto el aplanador de campo y me ayudó a enfocar los objetos de corta distancía al menos de unos 2Km. Espero complementar la información en los comentarios del telescopio propio ya haciendo pruebas de observación de espacio profundo. Pero excelente compra. ## Features - Focal reducer and field flattener is one of the essential accessories for astrophotography; SV193 2 inch 0.8x focal reducer and field flattener for refractor telescopes - With advanced refractor; SV193 0.8x focal reducer can take dazzling celestial photos without worrying about the distortion of the star points on the edge of the photo - The front end is a standard 2-inch socket to connect to the main lens; and the back end is M48x0.75 threaded to connect to the camera bayonet; support Full Frame Camera - Accepts 2 inch filters; includes standard 2 inch filter thread to add light pollution filter you need - The 0.8 times defocusing system shortens the exposure; it can meet the needs of astrophotographers who need sufficient exposure in a short time ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B094QSGPPN | | Best Sellers Rank | 1,817 in Telescope Accessories | | Brand Name | SVBONY | | Coating Description | Multi Coating | | Compatible Devices | Full-frame cameras, 2-inch filter thread compatible devices | | Customer Reviews | 4.8 4.8 out of 5 stars (96) | | Enclosure Material | Aluminium | | Exposure Control Type | Manual | | Item Dimensions L x W | 5.1L x 5.1W centimetres | | Item Weight | 0.3 Kilograms | | Manufacturer | SVBONY | | Media Type | ProductImage | | Model Name | SV193 | | Photo Filter Effect Type | Neutral Density | | Photo Filter Factor | 0.8 x | | Photo Filter Size | 50.8 Millimeters | | Photo Filter Thread Size | 50.8 Millimetres | | Screen Size | 2 Inches | | Water Resistance Level | Not Water Resistant | ## Product Details - **Brand:** SVBONY - **Coating description:** Multi Coating - **Material:** Aluminium - **Number of pieces:** 1 - **Photo Filter Factor:** 0.8 x - **Photo Filter Size:** 50.8 Millimeters - **Photo filter effect type:** Neutral Density - **Photo filter thread size:** 50.8 Millimetres - **Product dimensions:** 5.1L x 5.1W centimetres - **Water resistance level:** Not Water Resistant ## Images ![SVBONY SV193 Focal Reducer 2 Inch 0.8X Field Flattener Telescope Accessory for SV503 80mm F7 ED Telescope - Image 1](https://m.media-amazon.com/images/I/61fTvLvb+NS.jpg) ![SVBONY SV193 Focal Reducer 2 Inch 0.8X Field Flattener Telescope Accessory for SV503 80mm F7 ED Telescope - Image 2](https://m.media-amazon.com/images/I/51BNcJqKweS.jpg) ![SVBONY SV193 Focal Reducer 2 Inch 0.8X Field Flattener Telescope Accessory for SV503 80mm F7 ED Telescope - Image 3](https://m.media-amazon.com/images/I/61Z1M+YQ6rS.jpg) ![SVBONY SV193 Focal Reducer 2 Inch 0.8X Field Flattener Telescope Accessory for SV503 80mm F7 ED Telescope - Image 4](https://m.media-amazon.com/images/I/61RePVet4DS.jpg) ![SVBONY SV193 Focal Reducer 2 Inch 0.8X Field Flattener Telescope Accessory for SV503 80mm F7 ED Telescope - Image 5](https://m.media-amazon.com/images/I/41jnZEo7P0S.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by P***H on 19 May 2025* This is a "must have" for the SVBONY SV503 80ED and the 70ED. On the 70ED telescope, it drops the focal ratio from f/6 to f/4.8 for a wider field of view and slightly brighter (faster) image. With the 70ED, I was able to get the entire Pleiades cluster on my ZWO ASI183MC Pro camera sensor with almost zero vignetting. ### ⭐⭐⭐⭐⭐ Review *by R***D on 28 July 2022* Complemento para el telescopio Svbony SV503 80mm, monto el aplanador de campo y me ayudó a enfocar los objetos de corta distancía al menos de unos 2Km. Espero complementar la información en los comentarios del telescopio propio ya haciendo pruebas de observación de espacio profundo. Pero excelente compra. ### ⭐⭐⭐⭐⭐ Review *by M***E on 27 April 2025* Excellent build, works as advertised on my f/7 telescope. ## Frequently Bought Together - SVBONY SV193 Focal Reducer 2 Inch 0.8X Field Flattener Telescope Accessory for SV503 80mm F7 ED Telescope - SVBONY SV503 Telescope Tube, 80mm F7 Telescope OTA with Focal Length 560mm & ED Lens for Adults & Beginners High Powered, Compact and Portable Tube for Exceptional Viewing and Astrophotography - SVBONY Universal Dovetail Base, Finderscope Mount Bracket, for Installation of Finder Scope for Optical Telescope --- ## 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.vn/products/390297351-svbony-sv193-focal-reducer-2-inch-0-8x-field-flattener](https://www.desertcart.vn/products/390297351-svbony-sv193-focal-reducer-2-inch-0-8x-field-flattener) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-16*