{"title":"72° Eyepieces","description":"\u003cp\u003eThe Explore Scientific 72° ED Series sits between the 68° and 82° lines: a wider field than a standard Plössl, in a body that stays manageable at the focuser. Every element uses HOYA FCD1 extra-low dispersion glass to hold down chromatic aberration, and each barrel is sealed and waterproof.\u003c\/p\u003e\u003cp\u003eEight focal lengths run 6.5mm to 40mm. The 6.5, 8.5, 11.5, 15 and 20mm fit any telescope accepting 1.25\" eyepieces; the 25, 30 and 40mm are 2\" barrels for low-power, wide-field work.\u003c\/p\u003e\u003cp\u003eNot sure which suits your scope? Our \u003ca href=\"\/blogs\/news\/choosing-the-right-eyepiece-for-your-telescope\"\u003eeyepiece buyer's guide\u003c\/a\u003e covers magnification, exit pupil and eye relief.\u003c\/p\u003e","products":[{"product_id":"explore-scientific-72-degree-ed-11-5mm-waterproof-eyepiece","title":"Explore Scientific 72° ED Series 11.5mm Waterproof Eyepiece","description":"\u003cp\u003ePlössl and Kellner eyepieces shipped with most telescopes get the job done, but they leave performance on the table — narrow apparent fields, limited eye relief, and visible chromatic aberration at the field edge. The Explore Scientific 72° ED Series 11.5mm Waterproof Eyepiece is a \u003cstrong\u003egenuine HOYA FCD1 extra-low dispersion glass eyepiece with a 72° apparent field of view, waterproof argon-purged construction, and long eye relief\u003c\/strong\u003e — a meaningful optical upgrade that transforms what you see through your telescope.\u003c\/p\u003e\n\u003cp\u003eThe FCD1 ED glass sharply reduces chromatic aberration compared to standard eyepiece designs, producing cleaner star points and higher contrast across the field. The 72° apparent field of view is wide enough to create a panoramic, immersive viewing experience without the weight and expense of ultra-wide designs. Argon purging prevents internal fogging in humid conditions, and the waterproof housing means dew-soaked nights won't damage the optics.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch5 id=\"key-features\"\u003eKey Features\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHOYA FCD1 extra-low dispersion glass\u003c\/strong\u003e — reduced chromatic aberration for sharper, higher-contrast views\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e72° apparent field of view\u003c\/strong\u003e — immersive wide-field viewing without tunnel vision\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWaterproof and argon-purged\u003c\/strong\u003e — sealed against moisture, fog-proof in all conditions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong eye relief\u003c\/strong\u003e — comfortable extended viewing for both eyeglass wearers and unaided observers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.25\" barrel\u003c\/strong\u003e — standard format compatible with most telescope focusers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced multi-layer deposition coatings\u003c\/strong\u003e on all air-to-glass surfaces for maximum light transmission\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch5 id=\"ideal-for\"\u003eIdeal For\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eMedium-high magnification — a versatile focal length for planetary detail and compact deep-sky objects\u003c\/strong\u003e. An excellent upgrade from stock Plössl eyepieces for observers who want wider fields, better eye relief, and the optical clarity that ED glass provides. Compatible with any telescope accepting 1.25\" eyepieces.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":47709679059118,"sku":"EPWP72115ED-01","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0620\/2494\/1742\/files\/EPWP72115ED-01.jpg?v=1775598488"},{"product_id":"explore-scientific-72-degree-ed-15mm-waterproof-eyepiece","title":"Explore Scientific 72° ED Series 15mm Waterproof Eyepiece","description":"\u003cp\u003ePlössl and Kellner eyepieces shipped with most telescopes get the job done, but they leave performance on the table — narrow apparent fields, limited eye relief, and visible chromatic aberration at the field edge. The Explore Scientific 72° ED Series 15mm Waterproof Eyepiece is a \u003cstrong\u003egenuine HOYA FCD1 extra-low dispersion glass eyepiece with a 72° apparent field of view, waterproof argon-purged construction, and long eye relief\u003c\/strong\u003e — a meaningful optical upgrade that transforms what you see through your telescope.\u003c\/p\u003e\n\u003cp\u003eThe FCD1 ED glass sharply reduces chromatic aberration compared to standard eyepiece designs, producing cleaner star points and higher contrast across the field. The 72° apparent field of view is wide enough to create a panoramic, immersive viewing experience without the weight and expense of ultra-wide designs. Argon purging prevents internal fogging in humid conditions, and the waterproof housing means dew-soaked nights won't damage the optics.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch5 id=\"key-features\"\u003eKey Features\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHOYA FCD1 extra-low dispersion glass\u003c\/strong\u003e — reduced chromatic aberration for sharper, higher-contrast views\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e72° apparent field of view\u003c\/strong\u003e — immersive wide-field viewing without tunnel vision\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWaterproof and argon-purged\u003c\/strong\u003e — sealed against moisture, fog-proof in all conditions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong eye relief\u003c\/strong\u003e — comfortable extended viewing for both eyeglass wearers and unaided observers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.25\" barrel\u003c\/strong\u003e — standard format compatible with most telescope focusers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced multi-layer deposition coatings\u003c\/strong\u003e on all air-to-glass surfaces for maximum light transmission\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch5 id=\"ideal-for\"\u003eIdeal For\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eMedium magnification ideal for open clusters, planetary nebulae, and detailed lunar views\u003c\/strong\u003e. An excellent upgrade from stock Plössl eyepieces for observers who want wider fields, better eye relief, and the optical clarity that ED glass provides. Compatible with any telescope accepting 1.25\" eyepieces.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":47709679091886,"sku":"EPWP7215ED-01","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0620\/2494\/1742\/files\/EPWP7215ED-01.jpg?v=1775598489"},{"product_id":"explore-scientific-72-degree-ed-20mm-waterproof-eyepiece","title":"Explore Scientific 72° ED Series 20mm Waterproof Eyepiece","description":"\u003cp\u003ePlössl and Kellner eyepieces shipped with most telescopes get the job done, but they leave performance on the table — narrow apparent fields, limited eye relief, and visible chromatic aberration at the field edge. The Explore Scientific 72° ED Series 20mm Waterproof Eyepiece is a \u003cstrong\u003egenuine HOYA FCD1 extra-low dispersion glass eyepiece with a 72° apparent field of view, waterproof argon-purged construction, and long eye relief\u003c\/strong\u003e — a meaningful optical upgrade that transforms what you see through your telescope.\u003c\/p\u003e\n\u003cp\u003eThe FCD1 ED glass sharply reduces chromatic aberration compared to standard eyepiece designs, producing cleaner star points and higher contrast across the field. The 72° apparent field of view is wide enough to create a panoramic, immersive viewing experience without the weight and expense of ultra-wide designs. Argon purging prevents internal fogging in humid conditions, and the waterproof housing means dew-soaked nights won't damage the optics.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch5 id=\"key-features\"\u003eKey Features\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHOYA FCD1 extra-low dispersion glass\u003c\/strong\u003e — reduced chromatic aberration for sharper, higher-contrast views\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e72° apparent field of view\u003c\/strong\u003e — immersive wide-field viewing without tunnel vision\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWaterproof and argon-purged\u003c\/strong\u003e — sealed against moisture, fog-proof in all conditions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong eye relief\u003c\/strong\u003e — comfortable extended viewing for both eyeglass wearers and unaided observers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.25\" barrel\u003c\/strong\u003e — standard format compatible with most telescope focusers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced multi-layer deposition coatings\u003c\/strong\u003e on all air-to-glass surfaces for maximum light transmission\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch5 id=\"ideal-for\"\u003eIdeal For\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eLow-medium magnification scanning of star fields, large nebulae, and open clusters\u003c\/strong\u003e. An excellent upgrade from stock Plössl eyepieces for observers who want wider fields, better eye relief, and the optical clarity that ED glass provides. Compatible with any telescope accepting 1.25\" eyepieces.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":47709679124654,"sku":"EPWP7220ED-01","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0620\/2494\/1742\/files\/EPWP7220ED-01.jpg?v=1775598490"},{"product_id":"explore-scientific-72-degree-ed-25mm-waterproof-eyepiece","title":"Explore Scientific 72° ED Series 25mm Waterproof Eyepiece","description":"\u003cp\u003ePlössl and Kellner eyepieces shipped with most telescopes get the job done, but they leave performance on the table — narrow apparent fields, limited eye relief, and visible chromatic aberration at the field edge. The Explore Scientific 72° ED Series 25mm Waterproof Eyepiece is a \u003cstrong\u003egenuine HOYA FCD1 extra-low dispersion glass eyepiece with a 72° apparent field of view, waterproof argon-purged construction, and long eye relief\u003c\/strong\u003e — a meaningful optical upgrade that transforms what you see through your telescope.\u003c\/p\u003e\n\u003cp\u003eThe FCD1 ED glass sharply reduces chromatic aberration compared to standard eyepiece designs, producing cleaner star points and higher contrast across the field. The 72° apparent field of view is wide enough to create a panoramic, immersive viewing experience without the weight and expense of ultra-wide designs. Argon purging prevents internal fogging in humid conditions, and the waterproof housing means dew-soaked nights won't damage the optics.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch5 id=\"key-features\"\u003eKey Features\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHOYA FCD1 extra-low dispersion glass\u003c\/strong\u003e — reduced chromatic aberration for sharper, higher-contrast views\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e72° apparent field of view\u003c\/strong\u003e — immersive wide-field viewing without tunnel vision\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWaterproof and argon-purged\u003c\/strong\u003e — sealed against moisture, fog-proof in all conditions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong eye relief\u003c\/strong\u003e — comfortable extended viewing for both eyeglass wearers and unaided observers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2\" barrel\u003c\/strong\u003e — wider format for maximum light throughput and field stop diameter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced multi-layer deposition coatings\u003c\/strong\u003e on all air-to-glass surfaces for maximum light transmission\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch5 id=\"ideal-for\"\u003eIdeal For\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eLow-power wide-field sweeps of the milky way, large nebulae, and star clusters\u003c\/strong\u003e. An excellent upgrade from stock Plössl eyepieces for observers who want wider fields, better eye relief, and the optical clarity that ED glass provides. Compatible with any telescope accepting 2\" eyepieces.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":47709679190190,"sku":"EPWP7225ED-01","price":349.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0620\/2494\/1742\/files\/EPWP7225ED-01.jpg?v=1775598490"},{"product_id":"explore-scientific-72-degree-ed-30mm-waterproof-eyepiece","title":"Explore Scientific 72° ED Series 30mm Waterproof Eyepiece","description":"\u003cp\u003ePlössl and Kellner eyepieces shipped with most telescopes get the job done, but they leave performance on the table — narrow apparent fields, limited eye relief, and visible chromatic aberration at the field edge. The Explore Scientific 72° ED Series 30mm Waterproof Eyepiece is a \u003cstrong\u003egenuine HOYA FCD1 extra-low dispersion glass eyepiece with a 72° apparent field of view, waterproof argon-purged construction, and long eye relief\u003c\/strong\u003e — a meaningful optical upgrade that transforms what you see through your telescope.\u003c\/p\u003e\n\u003cp\u003eThe FCD1 ED glass sharply reduces chromatic aberration compared to standard eyepiece designs, producing cleaner star points and higher contrast across the field. The 72° apparent field of view is wide enough to create a panoramic, immersive viewing experience without the weight and expense of ultra-wide designs. Argon purging prevents internal fogging in humid conditions, and the waterproof housing means dew-soaked nights won't damage the optics.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch5 id=\"key-features\"\u003eKey Features\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHOYA FCD1 extra-low dispersion glass\u003c\/strong\u003e — reduced chromatic aberration for sharper, higher-contrast views\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e72° apparent field of view\u003c\/strong\u003e — immersive wide-field viewing without tunnel vision\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWaterproof and argon-purged\u003c\/strong\u003e — sealed against moisture, fog-proof in all conditions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong eye relief\u003c\/strong\u003e — comfortable extended viewing for both eyeglass wearers and unaided observers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2\" barrel\u003c\/strong\u003e — wider format for maximum light throughput and field stop diameter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced multi-layer deposition coatings\u003c\/strong\u003e on all air-to-glass surfaces for maximum light transmission\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch5 id=\"ideal-for\"\u003eIdeal For\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eUltra-wide, low-power viewing of large-scale deep-sky objects and rich star fields\u003c\/strong\u003e. An excellent upgrade from stock Plössl eyepieces for observers who want wider fields, better eye relief, and the optical clarity that ED glass provides. Compatible with any telescope accepting 2\" eyepieces.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":47709679517870,"sku":"EPWP7230ED-01","price":399.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0620\/2494\/1742\/files\/EPWP7230ED-01.jpg?v=1775598491"},{"product_id":"explore-scientific-72-degree-ed-40mm-waterproof-eyepiece","title":"Explore Scientific 72° ED Series 40mm Waterproof Eyepiece","description":"\u003cp\u003ePlössl and Kellner eyepieces shipped with most telescopes get the job done, but they leave performance on the table — narrow apparent fields, limited eye relief, and visible chromatic aberration at the field edge. The Explore Scientific 72° ED Series 40mm Waterproof Eyepiece is a \u003cstrong\u003egenuine HOYA FCD1 extra-low dispersion glass eyepiece with a 72° apparent field of view, waterproof argon-purged construction, and long eye relief\u003c\/strong\u003e — a meaningful optical upgrade that transforms what you see through your telescope.\u003c\/p\u003e\n\u003cp\u003eThe FCD1 ED glass sharply reduces chromatic aberration compared to standard eyepiece designs, producing cleaner star points and higher contrast across the field. The 72° apparent field of view is wide enough to create a panoramic, immersive viewing experience without the weight and expense of ultra-wide designs. Argon purging prevents internal fogging in humid conditions, and the waterproof housing means dew-soaked nights won't damage the optics.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch5 id=\"key-features\"\u003eKey Features\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHOYA FCD1 extra-low dispersion glass\u003c\/strong\u003e — reduced chromatic aberration for sharper, higher-contrast views\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e72° apparent field of view\u003c\/strong\u003e — immersive wide-field viewing without tunnel vision\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWaterproof and argon-purged\u003c\/strong\u003e — sealed against moisture, fog-proof in all conditions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong eye relief\u003c\/strong\u003e — comfortable extended viewing for both eyeglass wearers and unaided observers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2\" barrel\u003c\/strong\u003e — wider format for maximum light throughput and field stop diameter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced multi-layer deposition coatings\u003c\/strong\u003e on all air-to-glass surfaces for maximum light transmission\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch5 id=\"ideal-for\"\u003eIdeal For\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eMaximum field, minimum magnification — designed for the widest possible views through fast-ratio telescopes\u003c\/strong\u003e. An excellent upgrade from stock Plössl eyepieces for observers who want wider fields, better eye relief, and the optical clarity that ED glass provides. Compatible with any telescope accepting 2\" eyepieces.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":47709679583406,"sku":"EPWP7240ED-01","price":449.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0620\/2494\/1742\/files\/EPWP7240ED-01.jpg?v=1775598490"},{"product_id":"explore-scientific-72-degree-ed-6-5mm-waterproof-eyepiece","title":"Explore Scientific 72° ED Series 6.5mm Waterproof Eyepiece","description":"\u003cp\u003ePlössl and Kellner eyepieces shipped with most telescopes get the job done, but they leave performance on the table — narrow apparent fields, limited eye relief, and visible chromatic aberration at the field edge. The Explore Scientific 72° ED Series 6.5mm Waterproof Eyepiece is a \u003cstrong\u003egenuine HOYA FCD1 extra-low dispersion glass eyepiece with a 72° apparent field of view, waterproof argon-purged construction, and long eye relief\u003c\/strong\u003e — a meaningful optical upgrade that transforms what you see through your telescope.\u003c\/p\u003e\n\u003cp\u003eThe FCD1 ED glass sharply reduces chromatic aberration compared to standard eyepiece designs, producing cleaner star points and higher contrast across the field. The 72° apparent field of view is wide enough to create a panoramic, immersive viewing experience without the weight and expense of ultra-wide designs. Argon purging prevents internal fogging in humid conditions, and the waterproof housing means dew-soaked nights won't damage the optics.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch5 id=\"key-features\"\u003eKey Features\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHOYA FCD1 extra-low dispersion glass\u003c\/strong\u003e — reduced chromatic aberration for sharper, higher-contrast views\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e72° apparent field of view\u003c\/strong\u003e — immersive wide-field viewing without tunnel vision\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWaterproof and argon-purged\u003c\/strong\u003e — sealed against moisture, fog-proof in all conditions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong eye relief\u003c\/strong\u003e — comfortable extended viewing for both eyeglass wearers and unaided observers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.25\" barrel\u003c\/strong\u003e — standard format compatible with most telescope focusers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced multi-layer deposition coatings\u003c\/strong\u003e on all air-to-glass surfaces for maximum light transmission\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch5 id=\"ideal-for\"\u003eIdeal For\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eHigh magnification planetary and lunar detail\u003c\/strong\u003e. An excellent upgrade from stock Plössl eyepieces for observers who want wider fields, better eye relief, and the optical clarity that ED glass provides. Compatible with any telescope accepting 1.25\" eyepieces.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":47709679648942,"sku":"EPWP7265ED-01","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0620\/2494\/1742\/files\/EPWP7265ED-01.jpg?v=1775598491"},{"product_id":"explore-scientific-72-degree-ed-8-5mm-waterproof-eyepiece","title":"Explore Scientific 72° ED Series 8.5mm Waterproof Eyepiece","description":"\u003cp\u003ePlössl and Kellner eyepieces shipped with most telescopes get the job done, but they leave performance on the table — narrow apparent fields, limited eye relief, and visible chromatic aberration at the field edge. The Explore Scientific 72° ED Series 8.5mm Waterproof Eyepiece is a \u003cstrong\u003egenuine HOYA FCD1 extra-low dispersion glass eyepiece with a 72° apparent field of view, waterproof argon-purged construction, and long eye relief\u003c\/strong\u003e — a meaningful optical upgrade that transforms what you see through your telescope.\u003c\/p\u003e\n\u003cp\u003eThe FCD1 ED glass sharply reduces chromatic aberration compared to standard eyepiece designs, producing cleaner star points and higher contrast across the field. The 72° apparent field of view is wide enough to create a panoramic, immersive viewing experience without the weight and expense of ultra-wide designs. Argon purging prevents internal fogging in humid conditions, and the waterproof housing means dew-soaked nights won't damage the optics.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch5 id=\"key-features\"\u003eKey Features\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHOYA FCD1 extra-low dispersion glass\u003c\/strong\u003e — reduced chromatic aberration for sharper, higher-contrast views\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e72° apparent field of view\u003c\/strong\u003e — immersive wide-field viewing without tunnel vision\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWaterproof and argon-purged\u003c\/strong\u003e — sealed against moisture, fog-proof in all conditions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong eye relief\u003c\/strong\u003e — comfortable extended viewing for both eyeglass wearers and unaided observers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.25\" barrel\u003c\/strong\u003e — standard format compatible with most telescope focusers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced multi-layer deposition coatings\u003c\/strong\u003e on all air-to-glass surfaces for maximum light transmission\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch5 id=\"ideal-for\"\u003eIdeal For\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-magnification planetary observation with slightly more field than shorter focal lengths\u003c\/strong\u003e. An excellent upgrade from stock Plössl eyepieces for observers who want wider fields, better eye relief, and the optical clarity that ED glass provides. Compatible with any telescope accepting 1.25\" eyepieces.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":47709679681710,"sku":"EPWP7285ED-01","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0620\/2494\/1742\/files\/EPWP7285ED-01.jpg?v=1775598492"}],"url":"https:\/\/astrotelescopium.com\/collections\/72-degree-eyepieces.oembed","provider":"AstroTelescopium","version":"1.0","type":"link"}