{"product_id":"svbony-sv131-25mm-48-plossl-eyepiece-125in","title":"SVBONY SV131 25mm 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\u003eAvailable in 6, 12, 17, 25, and 40mm Focal Lengths\u003c\/li\u003e\n\u003cli\u003eStandard 1.25-Inch Barrel Format\u003c\/li\u003e\n\u003cli\u003eFully Multi-Coated (FMC) Optics\u003c\/li\u003e\n\u003cli\u003eAccepts Standard 1.25\" (M28.5*0.6) Filters\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 (6\/12\/17\/25\/40mm)\u003c\/h2\u003e\n\u003cp\u003eThe Svbony SV131 1.25\" Plössl Eyepiece series packages a classic 4-element optical design into a modern, all-metal housing suitable for any telescope with a 1.25-inch focuser. Each eyepiece in the series, including the popular 25mm model, features standard M28.5*0.6 filter threads, allowing you to easily attach nebula or light pollution filters to enhance your views of deep-sky objects.\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\u003eA 4-Element Design with Fully Multi-Coated Optics\u003c\/h3\u003e\n\u003cp\u003eThe SV131 eyepieces are built around the time-tested 4-element Plössl optical configuration, known for delivering sharp, high-contrast images. Svbony enhances this classic design with true full-bandwidth multi-layer coatings (FMC) on all air-to-glass surfaces. This treatment maximizes light transmission and, combined with matte blackened lens edges, effectively suppresses internal reflections and stray light for a cleaner, higher-contrast view.\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\u003eAll-Metal Construction in a 1.25-Inch Barrel\u003c\/h3\u003e\n\u003cp\u003eDurability is central to the SV131's design, which features an all-metal body and a chrome-plated 1.25-inch barrel that resists wear and provides a secure fit in your focuser. The interior of the barrel is matte-threaded to further reduce glare. For handling in the dark, an eco-friendly rubber anti-slip ring ensures a secure grip, preventing accidental drops during cold nights or when wearing gloves.\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\u003eDeep-Sky Viewing with M28.5*0.6 Filter Threads\u003c\/h3\u003e\n\u003cp\u003eThese eyepieces are well-suited for observing diffuse, low-surface-brightness targets like nebulae and star clusters. The design prioritizes a bright, clear field of view for comfortable, extended observing sessions. The inclusion of a standard M28.5*0.6 thread on the 1.25-inch barrel means you can easily add filters to combat light pollution or isolate specific wavelengths, making targets like the Orion Nebula (M42) or the Dumbbell Nebula (M27) stand out against the background sky.\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\"\u003eWhich Svbony SV131 focal length is best for locating objects in my 8\" f\/10 SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor an 8\" f\/10 SCT, the \u003cstrong\u003e40mm or 25mm SV131 Plössl\u003c\/strong\u003e would be your best choice for a low-power \"finder\" eyepiece. These focal lengths provide a wider true field of view, making it much easier to scan the sky and locate deep-sky objects before switching to higher magnification.\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. All Svbony SV131 eyepieces feature a standard \u003cstrong\u003eM28.5*0.6 thread\u003c\/strong\u003e on the inside of the 1.25-inch barrel. This allows you to attach any standard 1.25-inch astronomy filter, such as a light pollution filter, a nebula filter (like an O-III or UHC), or a colored planetary filter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat makes the SV131 Plössl a good choice for viewing the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Andromeda Galaxy (M31) is a large, dim object that requires a bright, wide field of view. The SV131's fully multi-coated, 4-element optics deliver excellent light transmission, which is crucial for seeing the galaxy's faint outer arms. Using a lower-power model like the 40mm or 25mm will help you frame the entire galaxy in your field of view.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Svbony SV131 comfortable for long observing sessions?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the SV131 series is designed for comfortable observation. While specific eye relief varies by focal length, the optical design is intended to reduce eye fatigue during extended viewing sessions, making them a practical choice for nights spent exploring star clusters and nebulae.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the optical design of the Svbony SV131 eyepiece?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe SV131 uses a classic \u003cstrong\u003ePlössl design\u003c\/strong\u003e, which consists of four optical elements arranged in two groups (two cemented doublets). This design is highly regarded for providing sharp, high-contrast views, especially for planetary and deep-sky observation, with good control over chromatic aberration.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the build quality of the SV131 hold up to frequent use?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Svbony SV131 is built for durability. It features an \u003cstrong\u003eall-metal housing\u003c\/strong\u003e, a chrome-plated barrel to prevent scratching, and matte-blackened internal surfaces to improve contrast. The addition of a rubber grip ring also helps protect it from accidental drops, ensuring it can withstand regular use in the field.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\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":52861231530269,"sku":"SV-W9101E","price":27.0,"currency_code":"CAD","in_stock":true}],"url":"https:\/\/davidastro.com\/products\/svbony-sv131-25mm-48-plossl-eyepiece-125in","provider":"David Astro","version":"1.0","type":"link"}