{"product_id":"sky-watcher-emerald-16mm-82-2-eyepiece","title":"Sky-Watcher Emerald 16mm 82° 2\" Eyepiece","description":"\u003ch2\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003eThe Sky-Watcher Emerald 16mm 82° 2-inch Eyepiece is an ultra-wide visual astronomy eyepiece designed for immersive mid-power observing. It offers a wide 82° apparent field of view, a 7-element optical design, 14mm eye relief, filter threading, all-metal construction, and an included carry case.\u003c\/p\u003e\u003ch2\u003e\u003cstrong\u003eWho Is This Product Best For?\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003eThis eyepiece is best for visual observers who want a wider, more immersive view for star clusters, nebulae, lunar observing, and general-purpose deep-sky viewing. It is a strong upgrade for observers moving beyond standard kit eyepieces and works well for beginner-to-intermediate users who want a premium-feeling ultra-wide field.\u003c\/p\u003e\u003ch2\u003e\u003cstrong\u003eWhy Choose This Product?\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-wide 82° field:\u003c\/strong\u003e Gives a panoramic view and helps keep objects in the field longer on manual mounts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e16mm focal length:\u003c\/strong\u003e A useful mid-power option for many telescopes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-inch format:\u003c\/strong\u003e Designed for telescopes and diagonals that accept 2-inch eyepieces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e14mm eye relief:\u003c\/strong\u003e More comfortable than many short focal length ultra-wide eyepieces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll-metal construction:\u003c\/strong\u003e Built for repeated field use and a solid feel in hand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOpen clusters, nebulae, and brighter galaxies.\u003c\/li\u003e\n\u003cli\u003eLunar observing at moderate magnification.\u003c\/li\u003e\n\u003cli\u003eGeneral-purpose deep-sky observing.\u003c\/li\u003e\n\u003cli\u003eManual Dobsonian and alt-az users who benefit from a wider apparent field.\u003c\/li\u003e\n\u003cli\u003eVisual observing with compatible 2-inch filters.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003eThe 16mm Emerald uses a 2-inch barrel and is threaded for compatible filters. It should be used with telescopes, focusers, and diagonals that accept 2-inch eyepieces. Final magnification and true field of view depend on the telescope focal length and optical design.\u003c\/p\u003e\u003ch2\u003e\u003cstrong\u003eImportant Limitations\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRequires 2-inch compatibility:\u003c\/strong\u003e This eyepiece is not intended for telescopes limited to 1.25-inch eyepieces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual use only:\u003c\/strong\u003e This is an eyepiece for observing, not a camera adapter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalance considerations:\u003c\/strong\u003e Larger 2-inch eyepieces may require rebalance on some small telescopes.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h2\u003e\u003ch3\u003e\u003cstrong\u003eIs this eyepiece good for beginners?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eYes, if the telescope accepts 2-inch eyepieces. It is a good upgrade for observers who want a wider view than standard eyepieces provide.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIt is best for mid-power visual observing of clusters, nebulae, the Moon, and many general deep-sky targets.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWill it fit my telescope?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIt fits telescopes that accept standard 2-inch eyepieces.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCan I use filters with it?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eYes. The eyepiece is threaded for compatible filters.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWhen should I choose another focal length?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eChoose the 9mm for higher magnification or the 22mm for lower magnification and a wider true field.\u003c\/p\u003e\u003ch2\u003e\u003cstrong\u003eOur Recommendation\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003eOntario Telescope recommends the Sky-Watcher Emerald 16mm 82° eyepiece as a versatile mid-power ultra-wide eyepiece for observers with 2-inch capable telescopes. It is a useful step up from standard kit eyepieces when a wider, more immersive field is the goal.\u003c\/p\u003e","brand":"Sky-Watcher","offers":[{"title":"Default Title","offer_id":53206319693935,"sku":"S51001","price":410.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/skywatcher-emerald-16mm-82-eyepiece-main.jpg?v=1781023398","url":"https:\/\/ontariotelescope.com\/products\/sky-watcher-emerald-16mm-82-2-eyepiece","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}