{"product_id":"svbony-sv230-8-20mm-zoom-eyepiece","title":"SVBONY SV230 8–20mm Click-Stop Zoom Eyepiece (57°–72° AFOV, 1.25″ \/ 2″)","description":"\u003cp\u003eThe \u003cstrong\u003eSVBONY SV230 8–20mm Click-Stop Zoom Eyepiece\u003c\/strong\u003e is a high-performance wide-angle zoom eyepiece designed for astronomers who want flexibility, optical quality, and viewing comfort without constantly changing eyepieces. Covering a useful focal length range from \u003cstrong\u003e8mm to 20mm\u003c\/strong\u003e, it delivers a continuously adjustable magnification with an expansive \u003cstrong\u003e57°–72° apparent field of view\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv class=\"brief-description-title d-flex justify-content-between\"\u003e\n\u003ch5\u003eKey Features\u003c\/h5\u003e\n\u003ci class=\"icon an icon-arrow-right\"\u003e\u003c\/i\u003e\n\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e8–20mm continuous zoom eyepiece for planetary and deep-sky observing\u003c\/li\u003e\n\u003cli\u003eClick-stop zoom mechanism for precise, repeatable magnification changes\u003c\/li\u003e\n\u003cli\u003eWide 57°–72° apparent field of view across the zoom range\u003c\/li\u003e\n\u003cli\u003eParfocal design minimises refocusing when changing magnification\u003c\/li\u003e\n\u003cli\u003eAspherical optical elements for improved edge sharpness\u003c\/li\u003e\n\u003cli\u003eFully multi-coated optics for enhanced contrast and light transmission\u003c\/li\u003e\n\u003cli\u003eBlackened lens edges to reduce internal reflections and stray light\u003c\/li\u003e\n\u003cli\u003eLong 17–19mm eye relief, suitable for eyeglass wearers\u003c\/li\u003e\n\u003cli\u003eDual 1.25\" and 2\" barrels for broad telescope compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/w9185a-1_20250905190206_8933.jpg?v=1768296711\" alt=\"SVBONY SV230 Super Zoom Eyepiece with product details on a space-themed background\"\u003e\u003c\/p\u003e\n\u003ch2\u003eClick-Stop Zoom \u0026amp; Parfocal Optical Design\u003c\/h2\u003e\n\u003cp\u003eThe precision \u003cstrong\u003eclick-stop zoom mechanism\u003c\/strong\u003e allows smooth and accurate transitions between focal lengths, making it easy to fine-tune magnification while observing planets, the Moon, or deep-sky objects. Thanks to its \u003cstrong\u003eparfocal construction\u003c\/strong\u003e, focus remains largely consistent across the entire zoom range, saving time and improving observing flow during live sessions.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/w9185a-2_20250905190316_0007.jpg?v=1768296711\" alt=\"SV230 click-stop parfocal zoom design\"\u003e\u003c\/p\u003e\n\u003ch2\u003eWide-Angle Viewing from 57° to 72°\u003c\/h2\u003e\n\u003cp\u003eUnlike traditional narrow-field zoom eyepieces, the SV230 delivers a genuinely immersive experience. The apparent field of view expands from \u003cstrong\u003e57° at 20mm\u003c\/strong\u003e to a wide \u003cstrong\u003e72° at 8mm\u003c\/strong\u003e, providing a more natural and engaging view when tracking objects manually or observing extended deep-sky targets. Each focal position is optically optimised to maintain a consistent wide-angle feel.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/w9185a-3_20250905190338_3816.jpg?v=1768296710\" alt=\"SV230 wide field of view illustration\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/w9185a-4_20250905190405_2845.jpg?v=1768296711\" alt=\"SV230 zoom ratio illustration\"\u003e\u003c\/p\u003e\n\u003ch2\u003eAspherical Optics \u0026amp; High-Contrast Performance\u003c\/h2\u003e\n\u003cp\u003eThe optical system uses \u003cstrong\u003easpherical lens elements\u003c\/strong\u003e to improve edge performance and suppress distortion, a common weakness in wide-angle zoom eyepieces. Combined with \u003cstrong\u003efully multi-coated glass\u003c\/strong\u003e and \u003cstrong\u003eblackened lens edges\u003c\/strong\u003e, the SV230 delivers higher contrast, improved light transmission, and cleaner backgrounds — particularly beneficial when observing faint deep-sky objects under light-polluted skies.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/w9185a-9_20250905190716_8424.jpg?v=1768296710\" alt=\"SV230 aspherical lens design\"\u003e\u003c\/p\u003e\n\u003ch2\u003eDual 1.25\" \u0026amp; 2\" Compatibility\u003c\/h2\u003e\n\u003cp\u003eSupplied with both \u003cstrong\u003e1.25\" and 2\" nosepieces\u003c\/strong\u003e, the SV230 integrates seamlessly with a wide range of telescopes, including Dobsonians, Schmidt-Cassegrains, Maksutovs, and refractors. Filter threads are provided on both barrel sizes, allowing easy use of standard astronomical filters.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/w9185a-5_20250905190503_9665.jpg?v=1768296710\" alt=\"SV230 compatible telescope interfaces\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/w9185a-7_20250905190610_2790.jpg?v=1768296710\" alt=\"SV230 Super Zoom Eyepiece\"\u003e\u003c\/p\u003e\n\u003ch2\u003eComfortable Viewing \u0026amp; Astigmatism Support\u003c\/h2\u003e\n\u003cp\u003eWith a generous \u003cstrong\u003e17–19mm eye relief\u003c\/strong\u003e and an adjustable rubber eyecup, the SV230 provides a relaxed viewing experience, even during long observing sessions. The eyecup can be removed to reveal an \u003cstrong\u003eM43 thread\u003c\/strong\u003e, allowing connection to compatible astigmatism correctors via an optional adapter (not included).\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/w9185a-8_20250905190656_2263.jpg?v=1768296711\" alt=\"SV230 astigmatism corrector support\"\u003e\u003c\/p\u003e\n\u003ch2\u003eWho Is This Eyepiece For?\u003c\/h2\u003e\n\u003cp\u003eThe SVBONY SV230 is ideal for observers who want a single premium zoom eyepiece to cover multiple magnifications, particularly for \u003cstrong\u003elunar, planetary, and brighter deep-sky observing\u003c\/strong\u003e. It is especially well suited to Dobsonian users, outreach sessions, and astronomers who value convenience without sacrificing optical quality.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/w9185a-11_20250905190845_5122.jpg?v=1768296711\" alt=\"SV230 astronomical observation example\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/w9185a-12_20250905190912_0739.jpg?v=1768296710\" alt=\"SV230 blackened lens edges\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/w9185a-14_20250905191014_1481.jpg?v=1768296711\" alt=\"SV230 eye relief illustration\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/w9185a-16_20250905191043_9860.jpg?v=1768296711\" alt=\"SV230 rubber eyecup\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/SV230_Super_Zoom_Aspheric_Eyepiece_Clickstop_Parfocal_Design_8-20mm_57_-_72.jpg?v=1768296864\" alt=\"SV230 stainless steel barrel\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/1-4_20250905190039_8290.jpg?v=1768296710\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/7_20250905185944_2461.jpg?v=1768296710\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/4_20250905185848_0663.jpg?v=1768296710\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/w9185a-1_20250905190206_8933.jpg?v=1768296711\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/1-2_20250905190033_4073.jpg?v=1768296710\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/w9185a-12_20250905190912_0739.jpg?v=1768296710\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/w9185a-2_20250905190316_0007.jpg?v=1768296711\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/w9185a-14_20250905191014_1481.jpg?v=1768296711\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/w9185a-3_20250905190338_3816.jpg?v=1768296710\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/1_20250905185838_6196.jpg?v=1768296710\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/1-3_20250905190036_6881.jpg?v=1768296710\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Svbony","offers":[{"title":"Default Title","offer_id":48392179122421,"sku":"W9185A","price":298.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0789\/8274\/2261\/files\/W9185A-0_20251210141527_5819.webp?v=1783627277","url":"https:\/\/nortrano.com\/products\/svbony-sv230-8-20mm-zoom-eyepiece","provider":"nortrano","version":"1.0","type":"link"}