{"product_id":"svbony-sv135-7-21mm-zoom-eyepiece","title":"SVBONY SV135 7–21mm Zoom Eyepiece (1.25″, 52°–36° AFOV)","description":"\u003c!-- NO H1 (removed) --\u003e\n\u003cp\u003eThe \u003cstrong\u003eSVBONY SV135 7–21mm Zoom Eyepiece (1.25\")\u003c\/strong\u003e is a practical and affordable zoom eyepiece designed for astronomers who want flexible magnification without constantly changing eyepieces. Covering a useful \u003cstrong\u003e7mm to 21mm focal length range\u003c\/strong\u003e, it is well suited to lunar, planetary, and brighter deep-sky observation.\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\u003e\n\u003cstrong\u003e7–21mm zoom eyepiece\u003c\/strong\u003e – adjust magnification smoothly without swapping eyepieces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5-element \/ 3-group optical design\u003c\/strong\u003e using high-index glass for sharp, high-contrast views\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e52°–36° apparent field of view\u003c\/strong\u003e across the zoom range\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e13–14mm eye relief\u003c\/strong\u003e with rubber eyecup for comfortable viewing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard 1.25\" barrel\u003c\/strong\u003e compatible with most telescopes and filters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety undercut groove\u003c\/strong\u003e helps prevent accidental drops during use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFlexible Zoom for Lunar \u0026amp; Planetary Observation\u003c\/h2\u003e\n\u003cp\u003eThe SV135 allows you to fine-tune magnification to match seeing conditions and targets. Lower magnification is ideal for locating objects and viewing the full lunar disc, while higher magnification is useful for examining details on the Moon, Jupiter, and Saturn. This flexibility makes the SV135 especially convenient for beginners and outreach sessions.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"SV135 Zoom Eyepiece 1.25inch 7-21mm 52°-36° image 2\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/6387599306152461862670958.jpg?v=1768311622\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e SV135 eyepiece is a helpful tool for observing and basic imaging of the Moon and planets, providing a more comfortable viewing experience on bright targets such as Jupiter and Saturn. \u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eOptical Design \u0026amp; Image Quality\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003e5-element, 3-group lens structure\u003c\/strong\u003e is designed to deliver good sharpness and contrast across the zoom range. Fully multi-coated optics help improve light transmission and reduce reflections, resulting in brighter images and more natural colour rendition.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"SV135 Zoom Eyepiece 1.25inch 7-21mm fully multi-coated optics\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/w9105b-2_20250807161536_5542.jpg?v=1768311622\"\u003e\u003c\/p\u003e\n\u003ch2\u003eComfortable Viewing \u0026amp; Secure Fit\u003c\/h2\u003e\n\u003cp\u003eWith a \u003cstrong\u003e13–14mm eye relief\u003c\/strong\u003e and a soft rubber eyecup, the SV135 remains comfortable during longer observing sessions, whether you observe with or without glasses. The standard \u003cstrong\u003e1.25\" barrel\u003c\/strong\u003e includes a safety undercut to help ensure a secure fit in the focuser.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"SV135 Zoom Eyepiece 1.25inch 7-21mm barrel and thread detail\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/6387599306187768105565964.jpg?v=1768311621\"\u003e\u003c\/p\u003e\n\u003ch2\u003eSimple Setup \u0026amp; Broad Compatibility\u003c\/h2\u003e\n\u003cp\u003eThe SV135 is compatible with all telescopes that accept \u003cstrong\u003e1.25\" eyepieces\u003c\/strong\u003e, including refractors, Maksutovs, Schmidt-Cassegrains, and Dobsonians. It also supports standard 1.25\" filters, making it easy to expand your observing options.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"SV135 Zoom Eyepiece 1.25inch 7-21mm connection steps\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/w9105b-7_20250807161537_1477.jpg?v=1768311623\"\u003e\u003c\/p\u003e\n\u003ch2\u003eDesigned for Everyday Observing\u003c\/h2\u003e\n\u003cp\u003eThe SV135 is a solid choice for users who want a lightweight, easy-to-use zoom eyepiece for regular observing. It offers a practical balance between convenience, optical performance, and affordability.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"SV135 Zoom Eyepiece 1.25inch 7-21mm observation experience image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/w9105b-6_20250807161537_1484.jpg?v=1768311622\"\u003e\u003c\/p\u003e","brand":"Dark Clear Skies ","offers":[{"title":"Default Title","offer_id":55416112251256,"sku":"W9105B","price":29.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/w9105b-0_20251230160657_4003.webp?v=1768311621","url":"https:\/\/www.darkclearskies.co.uk\/products\/svbony-sv135-7-21mm-zoom-eyepiece","provider":"Dark Clear Skies ","version":"1.0","type":"link"}