{"product_id":"svbony-sv131-17mm-48-plossl-eyepiece-125in","title":"SVBONY SV131 17mm 48° Plössl Eyepiece - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eClassic 4-Element Plössl Optical Design\u003c\/li\u003e\n\u003cli\u003eFully Multi-Coated (FMC) Optics\u003c\/li\u003e\n\u003cli\u003eStandard 1.25\" Barrel with M28.5*0.6 Filter Threads\u003c\/li\u003e\n\u003cli\u003eAll-Metal Construction with Rubber Grip\u003c\/li\u003e\n\u003cli\u003eBlackened Lens Edges to Reduce Internal Reflections\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eSvbony SV131 1.25\" Plossl Eyepiece\u003c\/h2\u003e\n\u003cp\u003eThe Svbony SV131 1.25\" Plossl Eyepiece series uses a classic 4-element optical design to deliver bright, high-contrast views, making it an excellent upgrade from standard kit eyepieces. With a standard M28.5*0.6 filter thread, each eyepiece in the SV131 series accepts all 1.25-inch filters for enhancing contrast on nebulae and planets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e4-Element Plössl Optics: FMC Coatings and Baffling\u003c\/h3\u003e\n\u003cp\u003eThe SV131 is built around the time-tested 4-element, 2-group Plössl design, known for its sharp on-axis views and excellent light transmission. Svbony enhances this design with fully multi-coated (FMC) optics to maximize brightness and contrast, which is critical for resolving faint detail in deep-sky objects like star clusters and galaxies. To further improve image quality, the lens edges are blackened to eliminate stray light and internal reflections that can wash out faint details.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e1.25-Inch All-Metal Body with Filter Threads\u003c\/h3\u003e\n\u003cp\u003eThe eyepiece features a durable, all-metal housing with a chrome-plated 1.25-inch barrel that resists wear and provides a secure fit in any standard focuser or diagonal. The interior of the barrel is matte-threaded to absorb off-axis light, ensuring a dark background sky. For secure handling, even with gloves on, an eco-friendly rubber anti-slip ring provides a confident grip and helps prevent accidental drops.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSV131 Plössl vs. Other Eyepiece Designs: Where It Fits\u003c\/h3\u003e\n\u003cp\u003eWhile advanced wide-field eyepieces offer a more immersive experience, they come at a significantly higher cost and complexity. The Plössl design strikes a critical balance, delivering far better correction and sharpness than simpler Kellner or Huygens eyepieces that are often included with beginner telescopes. The SV131 Plössl is the logical next step for an observer wanting to see what their telescope is truly capable of without a major investment. The primary trade-off is typically a tighter eye relief compared to more expensive, complex designs, particularly in the shorter focal lengths.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat makes the Svbony SV131 Plössl a good choice for deep-sky observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Svbony SV131's \u003cstrong\u003e4-element Plössl design\u003c\/strong\u003e and \u003cstrong\u003efully multi-coated optics\u003c\/strong\u003e maximize light transmission and contrast. This makes it easier to see faint details in nebulae, star clusters, and galaxies compared to basic kit eyepieces. The blackened lens edges also contribute to a darker background, making faint objects stand out.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use filters with the Svbony SV131 eyepiece?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The Svbony SV131 features a standard \u003cstrong\u003e1.25-inch barrel\u003c\/strong\u003e with \u003cstrong\u003eM28.5*0.6 threads\u003c\/strong\u003e, making it compatible with all standard 1.25-inch astronomy filters. This allows you to use nebula filters like a UHC or O-III to improve views of emission nebulae, or colored filters to enhance details on planets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Svbony SV131 Plössl compare to the eyepieces that came with my telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eMost entry-level telescopes come with simpler eyepiece designs like Kellner or Ramsden. The Svbony SV131 Plössl offers a significant upgrade in image sharpness, color correction, and contrast due to its more advanced 4-element design and superior coatings. You will likely notice sharper stars, especially towards the edge of the field, and better overall image brightness.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich Svbony SV131 focal length is best for viewing the Orion Nebula (M42) in an 8\" Dobsonian?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor a large object like the Orion Nebula (M42) in a typical 8\" f\/6 Dobsonian, a lower-power eyepiece is ideal for framing the entire structure. A focal length in the \u003cstrong\u003e25mm to 40mm range\u003c\/strong\u003e from the SV131 series would provide a wide field of view to see the nebula and its surrounding stars. A mid-power eyepiece, like a 17mm, would then be excellent for getting a closer look at the Trapezium star cluster at its core.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Svbony SV131 eyepiece work for planetary viewing of Jupiter in my 90mm refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. For planetary viewing, higher magnification is needed to resolve details like Jupiter's cloud bands or Saturn's rings. In a 90mm refractor (which typically has a focal length around 900mm), the shorter focal length eyepieces from the Svbony SV131 series, such as the \u003cstrong\u003e6mm or 12mm\u003c\/strong\u003e, would provide the necessary magnification for detailed planetary observation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of the all-metal construction on the Svbony SV131?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe all-metal construction provides durability and a solid feel. Unlike plastic eyepieces, the metal body is more resistant to temperature changes and physical damage. The chrome-plated barrel ensures a smooth, non-binding fit in your telescope's focuser for years of reliable use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecifications\u003c\/td\u003e\n\u003ctd\u003eData not available.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/svbony-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eSvbony 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SVBONY","offers":[{"title":"Default Title","offer_id":52861231497501,"sku":"SV-W9101D","price":16.79,"currency_code":"USD","in_stock":true}],"url":"https:\/\/davidastro.com\/en-us\/products\/svbony-sv131-17mm-48-plossl-eyepiece-125in","provider":"David Astro","version":"1.0","type":"link"}