{"product_id":"ioptron-6241-25","title":"iOptron Plossl 52° 25mm Eyepiece (1.25'')","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e25mm Focal Length\u003c\/li\u003e\n\u003cli\u003e52° Apparent Field of View\u003c\/li\u003e\n\u003cli\u003e1.25\" Barrel Diameter\u003c\/li\u003e\n\u003cli\u003eClassic Plössl Optical Design\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\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\u003eiOptron Plossl 52° 25mm Eyepiece (1.25'')\u003c\/h2\u003e\n      \u003cp\u003eThe iOptron Plossl 52° 25mm Eyepiece is a fundamental workhorse optic, delivering a versatile medium magnification in any telescope with a 1.25\" focuser. Its 25mm focal length provides useful views of the Moon, planets, and a wide range of deep-sky objects. The traditional 52° apparent field of view gives a sharp, classic window on the sky, making this a reliable upgrade over most basic kit eyepieces.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eThe 25mm Focal Length: A Go-To for General Observing\u003c\/h3\u003e\n      \u003cp\u003eA 25mm eyepiece is an essential part of any astronomer's kit. It strikes a critical balance, providing enough magnification to resolve details like Jupiter's cloud bands or the core of the Orion Nebula (M42), while maintaining a wide enough true field to frame larger open clusters like the Pleiades (M45). In a typical 8\" f\/10 Schmidt-Cassegrain, this eyepiece yields 80x, a perfect power for locating and examining hundreds of celestial targets.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eClassic 52° Plössl Design for High-Contrast Views\u003c\/h3\u003e\n      \u003cp\u003eThe four-element Plössl design is valued for its high light transmission and contrast, producing sharp, bright images with minimal internal reflections. The 52° apparent field of view is a time-tested standard that provides a comfortable and immersive viewing experience. This makes the iOptron 25mm Plössl particularly effective on faint objects where maximizing image brightness is key, such as resolving globular clusters or tracing the faint arms of galaxies.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat are the best targets for the iOptron 25mm Plössl eyepiece?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe \u003cstrong\u003e25mm focal length\u003c\/strong\u003e is excellent for a wide variety of objects. It's ideal for full-disc views of the Moon, observing Jupiter and its moons, framing the rings of Saturn, and viewing larger deep-sky objects like the Andromeda Galaxy (M31), the Orion Nebula (M42), and large open star clusters like the Beehive Cluster (M44).\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the iOptron 25mm Plössl perform in an 8\" f\/10 Schmidt-Cassegrain telescope?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eIn a telescope with a 2000mm focal length, like a typical 8\" SCT, this eyepiece provides a magnification of 80x (2000mm \/ 25mm). This is a perfect medium power for resolving globular clusters, splitting many double stars, and studying planetary details when seeing conditions are average. It serves as an excellent general-purpose eyepiece for this type of instrument.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eIs the iOptron Plossl 52° 25mm a good upgrade from a kit eyepiece?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes. While many beginner telescopes come with a 25mm eyepiece, a quality Plössl design like this iOptron model typically offers sharper optics, better coatings, and improved contrast over basic Kellner or Huygens designs. You'll likely notice darker sky backgrounds and tighter star points, especially towards the edge of the 52° field of view.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWill this 1.25\" iOptron eyepiece work in my telescope?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe iOptron 25mm Plössl uses a standard \u003cstrong\u003e1.25\" barrel\u003c\/strong\u003e, which is the most common eyepiece size for consumer telescopes. It will fit virtually any telescope that accepts 1.25\" eyepieces, including models from Celestron, Meade, Sky-Watcher, Orion, and many others.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the advantage of the 52° Plössl design?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe Plössl optical design is a classic for a reason. It uses four glass elements to deliver sharp, high-contrast images with very good control over optical aberrations. The \u003cstrong\u003e52° apparent field of view\u003c\/strong\u003e provides a comfortable, immersive window that feels more natural than the narrow \"tunnel vision\" of older, simpler eyepiece designs.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eI wear glasses. Can I use the iOptron 25mm Plössl?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003ePlössl eyepieces in the 25mm focal length range typically have sufficient eye relief for many eyeglass wearers to see most of the field of view. While the exact eye relief specification is not provided, it is generally more comfortable than the tight eye relief found on shorter focal length Plössls (e.g., 10mm or 6mm).\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003ctable class=\"DAV-specifications\"\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e25mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eApparent Field of View\u003c\/td\u003e\n\u003ctd\u003e52°\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003ePlössl\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cul class=\"DAV-grid\"\u003e\n    \u003cli class=\"DAV-grid-item\"\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"DAV-item-title\"\u003eiOptron 25mm Plössl Eyepiece (1.25\")\u003c\/p\u003e\n        \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/ioptron-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eiOptron 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"iOptron","offers":[{"title":"Default Title","offer_id":52917294727453,"sku":"IOP-6241-25","price":49.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/iOptron-Plossl-52-25mm-Eyepiece-1-25-1_2b91c7fa-9753-40a2-9814-b002b5743646.jpg?v=1789142182","url":"https:\/\/davidastro.com\/products\/ioptron-6241-25","provider":"David Astro","version":"1.0","type":"link"}