{"title":"Baader Hyperion Aspheric Eyepieces","description":"\u003cp\u003eBaader Hyperion Aspheric eyepieces are long focal length designs with a 72° apparent field and a dual 1.25\"\/2\" barrel. Aspheric lens surfaces help keep stars sharp toward the edge of the wide field.\u003c\/p\u003e\u003cp\u003eThe 31mm and 36mm models are made for low-power, wide-field observing: large nebulae, open clusters and rich Milky Way star fields. They pair well with refractors and Dobsonians where a wide true field is the priority.\u003c\/p\u003e","products":[{"product_id":"baader-hyperion-aspheric-72-31mm-eyepiece-1-25-2","title":"Baader Hyperion Aspheric 72° 31mm Eyepiece - 1.25\"\/2\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e31mm Focal Length\u003c\/li\u003e\n\u003cli\u003e72° Apparent Field of View\u003c\/li\u003e\n\u003cli\u003eAspheric Optical Design for Edge-to-Edge Sharpness\u003c\/li\u003e\n\u003cli\u003eDual 1.25\" and 2\" Barrel Design\u003c\/li\u003e\n\u003cli\u003eBaader Phantom Group Multi-Coatings\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\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\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\u003eBaader Hyperion Aspheric 72° 31mm Eyepiece - 1.25\"\/2\"\u003c\/h2\u003e\n      \u003cp\u003eThe Baader Hyperion Aspheric 31mm Eyepiece delivers a tack-sharp 72° apparent field of view using an advanced optical design that corrects for aberrations across the entire frame. Engineered for both 1.25\" and 2\" focusers, this eyepiece uses aspherical lens surfaces to achieve superior image clarity, high contrast, and a remarkably stable viewing experience, challenging eyepieces at much higher price points.\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\u003eAspheric Optics: A 72° Field Designed for the Human Eye\u003c\/h3\u003e\n      \u003cp\u003eBy incorporating aspherical lens surfaces—a technology common in high-end photographic lenses—the Hyperion Aspheric 31mm corrects for distortion and field curvature far more effectively than traditional spherical designs. This results in pinpoint stars from the center to the very edge of the field. The 72° apparent field is a deliberate choice, designed to be fully taken in at a glance without needing to roll your eye to see the edges, providing a comfortable and immersive view.\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\u003ePhantom Group Coatings: Optimized for Peak Visual Sensitivity\u003c\/h3\u003e\n      \u003cp\u003eBaader's Phantom Group Coating is a multi-layer broadband anti-reflection system applied to every glass surface. Each coating group is calculated to be most effective where the human eye has its highest sensitivity—in the green portion of the spectrum. Unlike less expensive coatings that produce a strong green reflection, Phantom Group coatings are nearly colorless, ensuring maximum light is transmitted to your eye for a brighter, higher-contrast image with minimal stray light.\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\u003eDirect-Thread Connectivity for Imaging and SCTs\u003c\/h3\u003e\n      \u003cp\u003eThis eyepiece offers more than just a standard push-fit barrel. On the telescope side, a 2\" Schmidt-Cassegrain thread allows the eyepiece to be screwed directly onto the rear cell of an SCT, bypassing the diagonal. This configuration provides an exceptionally secure connection and can yield a wider true field of view than is possible with a standard 2\" nosepiece. For astrophotography, the eyepiece features threads on the eye-facing side for direct camera attachment, enabling high-magnification projection imaging.\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\u003eStable Viewing: A 72° Field Without 'Nervous' Insight\u003c\/h3\u003e\n      \u003cp\u003eMany extreme wide-angle eyepieces suffer from a \"nervous\" or critical eye placement, where a slight shift in position causes the image to black out. The Hyperion Aspheric is engineered for comfortable, stable viewing. The forgiving eye placement makes it an ideal choice for public outreach, educational settings, or anyone who finds fussy eyepieces frustrating, ensuring you and others can consistently enjoy the view.\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\u003eBaader 31mm Aspheric vs. 80°+ Ultra-Wide Eyepieces\u003c\/h3\u003e\n      \u003cp\u003eWhile eyepieces with 80° or wider fields of view are popular, they come with distinct trade-offs that the 72° Aspheric design directly addresses.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eCompetitor Advantage (80°+ AFOV):\u003c\/strong\u003e Ultra-wide eyepieces provide a more dramatic \"spacewalk\" feeling due to their expansive apparent fields.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eBaader Aspheric 31mm Advantage:\u003c\/strong\u003e The 72° field concentrates the available light into a smaller area, resulting in a brighter image, higher contrast, and a better limiting magnitude for seeing faint stars. Furthermore, the entire field is viewable at once, whereas the outer edges of an 80°+ field are often inaccessible without straining your eye.\u003c\/li\u003e\n      \u003c\/ul\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\"\u003eWhy choose the Baader 31mm Aspheric's 72° field over an 80° eyepiece?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe 72° field of the Baader Aspheric is designed to be fully visible without needing to move your eye around. This provides a more comfortable and practical view. It also produces a brighter, higher-contrast image because the light from the telescope is not spread over as wide an area, making it easier to see faint deep-sky objects.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Baader 31mm Aspheric eyepiece for astrophotography?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes. The eyepiece features threads on the eye lens side that allow you to directly attach a DSLR or other astronomy camera body using appropriate adapters. This method, known as eyepiece projection, is excellent for high-resolution imaging of planets and small deep-sky objects.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Baader 31mm Aspheric perform on an f\/10 SCT for viewing the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe 31mm focal length makes it an excellent low-power \"finder\" eyepiece for an f\/10 SCT. It provides a wide true field of view, allowing you to frame large objects like the Andromeda Galaxy (M31) or the Pleiades (M45) in their entirety. The aspheric design ensures the dense star fields surrounding these objects remain sharp to the edge.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of the 2\" SC thread on the Baader 31mm Aspheric?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe integrated 2\" Schmidt-Cassegrain thread lets you attach the eyepiece directly to the back of an SCT, eliminating the need for a diagonal. This creates a rigid, secure connection and can slightly increase your true field of view by shortening the light path, making it a powerful tool for wide-field sweeping.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Baader 31mm Aspheric a good choice for a Dobsonian to find faint objects like the Veil Nebula (NGC 6960)?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eAbsolutely. Its 31mm focal length provides low magnification and a wide field, making it an ideal eyepiece for locating objects with a Dobsonian. The high light transmission from the Phantom Group coatings and the bright image from the 72° field make it easier to detect faint, diffuse objects like the Veil Nebula (NGC 6960), especially when paired with a nebula filter.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat makes the \"Phantom Group\" coatings on the Baader 31mm Aspheric special?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eBaader's \u003cstrong\u003ePhantom Group coatings\u003c\/strong\u003e are advanced multi-layer anti-reflection coatings optimized for visual astronomy. They are engineered to maximize light transmission in the green part of the spectrum, where the dark-adapted human eye is most sensitive. This results in brighter views and higher contrast compared to standard coatings, which often reflect green light.\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\u003e31mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApparent Field of View\u003c\/td\u003e\n\u003ctd\u003e72°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e1.25\" and 2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEye Relief (mm)\u003c\/td\u003e\n\u003ctd\u003e17 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Stop Diameter\u003c\/td\u003e\n\u003ctd\u003e38 mm (2\"), 30mm (1¼\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Lens Elements\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParfocal Eyepieces\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAR-Coating\u003c\/td\u003e\n\u003ctd\u003ePhantom Coating® Group\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eAspheric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpeciality\u003c\/td\u003e\n\u003ctd\u003eEyepiece projection: classical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThreaded for filters\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Stop Displacement to reference plane\u003c\/td\u003e\n\u003ctd\u003e+\/- 0 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Groups\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDustcaps\u003c\/td\u003e\n\u003ctd\u003e1¼\" dustcap (31.8mm), 2\" dustcap (45mm), 2\" dustcap (46.5mm - fits over eyecup)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyecups\u003c\/td\u003e\n\u003ctd\u003efolding eyecup (M43)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSlip Protect Safety\u003c\/td\u003e\n\u003ctd\u003eClassic Undercut\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Body above Reference Plane (mm)\u003c\/td\u003e\n\u003ctd\u003e76.7 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength of 1¼\" barrel (mm)\u003c\/td\u003e\n\u003ctd\u003e23.9 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength of 2\" barrel (mm)\u003c\/td\u003e\n\u003ctd\u003e27.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Series\u003c\/td\u003e\n\u003ctd\u003eHyperion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e59.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Thread\u003c\/td\u003e\n\u003ctd\u003eM43, SP54\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\"\u003eBaader Hyperion Aspheric 72° 31mm Eyepiece\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\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_Digiscoping_Camera_Adaptations_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader Planetarium Digiscoping Camera Adaptations Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_Hyperion_Aspheric_Eyepieces_Technical_Data.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader Planetarium Hyperion Aspheric Eyepieces Technical Data\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/baader-planetarium-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eBaader Planetarium Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":44967319503133,"sku":"BAA-2454631","price":284.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-Hyperion-Aspheric-72-degree-31mm-Eyepiece-1-25-inch-2-inch-1__36304.1597110713.1280.1280.jpg?v=1684340581"},{"product_id":"baader-hyperion-aspheric-72-36mm-eyepiece-1-25-2","title":"Baader Hyperion Aspheric 72° 36mm Eyepiece - 1.25\"\/2\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e36mm Focal Length\u003c\/li\u003e\n\u003cli\u003e72° Apparent Field of View\u003c\/li\u003e\n\u003cli\u003eAspheric Optical Design\u003c\/li\u003e\n\u003cli\u003eDual 1.25\" and 2\" Barrel\u003c\/li\u003e\n\u003cli\u003eBaader Phantom Group Multi-Coatings\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\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\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\u003eBaader Hyperion Aspheric 72° 36mm Eyepiece - 1.25\"\/2\"\u003c\/h2\u003e\n\u003cp\u003eThe Baader Hyperion Aspheric 36mm Eyepiece delivers an immersive 72° apparent field of view using a sophisticated aspheric design that fits both 1.25\" and 2\" focusers. Its 36mm focal length provides extremely low power and a massive true field of view, establishing it as the ultimate finder eyepiece for sweeping the Milky Way or locating faint deep-sky objects in any telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAspheric Optics and Phantom Coatings: A Brighter 72° Field\u003c\/h3\u003e\n\u003cp\u003eUnlike traditional eyepieces that use multiple spherical lenses to control aberrations, the Hyperion Aspheric 36mm employs aspheric surfaces to achieve sharp, high-contrast views across the entire field with fewer glass elements. This simplified optical path, combined with Baader's 7-layer Phantom Group multi-coatings, maximizes light throughput and minimizes internal reflections.\u003c\/p\u003e\n\u003cp\u003eThe result is a brighter image that reveals fainter stars and more delicate nebulosity compared to more complex wide-field designs. The coatings are optimized for the human eye's peak sensitivity, ensuring neutral color rendition and preventing the light loss associated with lower-quality green-reflex coatings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eThe 72° AFOV: Full Immersion Without Eye Strain\u003c\/h3\u003e\n\u003cp\u003eBaader deliberately engineered the Hyperion Aspheric with a 72° apparent field of view. This angle is wide enough for an immersive experience yet allows you to take in the entire starfield at once without straining or \"rolling\" your eye to see the edges.\u003c\/p\u003e\n\u003cp\u003eMany ultra-wide eyepieces suffer from a \"nervous\" view, where slight movements of your eye cause the image to black out. The Hyperion Aspheric provides a stable, comfortable, and forgiving eye position, making it an excellent choice for extended observing sessions and for sharing views at public outreach events.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eMechanical Design: 1.25\"\/2\" Barrels, SCT Threads, and Imaging Ports\u003c\/h3\u003e\n\u003cp\u003eThe Hyperion Aspheric 36mm is built for flexibility. It features a dual-format barrel that fits directly into both 1.25\" and 2\" focusers without adapters, making it compatible with virtually any telescope.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect SCT Connection:\u003c\/strong\u003e The eyepiece body includes a 2\" Schmidt-Cassegrain thread, allowing you to screw it directly onto the rear cell of an SCT. This creates a rigid connection and can provide a wider true field than using a standard 2\" diagonal and nosepiece.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging-Ready:\u003c\/strong\u003e An M43 thread on the eye lens side and compatibility with the SP 54 system allow for the direct attachment of DSLR and other cameras for high-resolution afocal imaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBinoviewer Compatible:\u003c\/strong\u003e Its design is compact enough to be used in most binoviewers, a rare capability for a long-focal-length 2\" wide-field eyepiece.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eHyperion 36mm Aspheric vs. 80°+ Ultra-Wide Eyepieces: A Deliberate Trade-Off\u003c\/h3\u003e\n\u003cp\u003eWhile eyepieces with 80° or wider apparent fields offer a more expansive \"spacewalk\" view, this often comes at a cost. To achieve such a wide field with spherical lenses requires complex, multi-element designs that can dim the image and reduce contrast.\u003c\/p\u003e\n\u003cp\u003eThe Hyperion Aspheric 36mm prioritizes image brightness and sharpness over raw field size. Observers consistently report that the Aspheric reveals finer stars and fainter structures in nebulae than more expensive ultra-wide eyepieces. It represents a conscious design choice: a fully usable 72° field with superior light transmission is often more effective than a larger, dimmer field where the edges are hard to see.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main advantage of the Baader Hyperion Aspheric 36mm's aspheric design?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe aspheric lens surfaces correct for optical aberrations across the entire field of view using fewer glass elements than traditional spherical designs. This results in a \u003cstrong\u003ebrighter, higher-contrast image\u003c\/strong\u003e with excellent edge-to-edge sharpness, as there is less glass for the light to pass through.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy does the Baader Hyperion Aspheric 36mm have a 72° field instead of 80° or more?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 72° field is a deliberate design choice that allows the observer to see the entire field of view at once without needing to move their eye. This creates a more comfortable and stable viewing experience, avoiding the \"nervous\" blackouts common in some ultra-wide designs. It prioritizes the \u003cstrong\u003equality and accessibility\u003c\/strong\u003e of the view over raw field size.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I attach a camera to the Baader Hyperion Aspheric 36mm eyepiece?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe eyepiece is designed for afocal imaging. It features an \u003cstrong\u003eM43 thread\u003c\/strong\u003e on the eye-facing side. Using the appropriate M43 and SP 54 adapter rings from Baader, you can directly and rigidly couple most DSLR or system cameras to the eyepiece for high-resolution photography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Baader Hyperion Aspheric 36mm in both 1.25\" and 2\" focusers?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The Baader Hyperion Aspheric 36mm features an integrated dual-barrel design. It can be inserted directly into a \u003cstrong\u003e2\" focuser\u003c\/strong\u003e, or by removing the 2\" barrel section, it reveals a \u003cstrong\u003e1.25\" barrel\u003c\/strong\u003e that fits smaller focusers, offering universal compatibility without needing separate adapters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Baader Hyperion Aspheric 36mm perform for finding the Andromeda Galaxy (M31) in an 8\" SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt's an ideal combination. The 36mm focal length provides very low magnification in an f\/10 SCT, maximizing the true field of view. This allows you to frame the entire core and a significant portion of the spiral arms of M31 in a single view, making it much easier to locate and appreciate the galaxy's full extent.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Baader Hyperion Aspheric 36mm a good choice for viewing the Veil Nebula (NGC 6960) with a filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The Veil Nebula requires a low-power eyepiece and an OIII filter. The Hyperion Aspheric 36mm's high light transmission, a result of its aspheric design and Phantom Group coatings, ensures that the nebula remains as bright as possible after the light loss from the filter. This makes the faint, filamentary structure of the nebula stand out more clearly against the dark sky.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e36mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApparent Field of View\u003c\/td\u003e\n\u003ctd\u003e72°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e1.25\" and 2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eAspheric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003ePhantom Group Multi-Coating (7-Layer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Connection Thread\u003c\/td\u003e\n\u003ctd\u003eM43 \/ SP 54\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Connection Thread\u003c\/td\u003e\n\u003ctd\u003e2\" SC Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEye Relief (mm)\u003c\/td\u003e\n\u003ctd\u003e19 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Stop Diameter\u003c\/td\u003e\n\u003ctd\u003e45 mm (2\"), 30mm (1¼\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Lens Elements\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParfocal Eyepieces\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAR-Coating\u003c\/td\u003e\n\u003ctd\u003ePhantom Coating® Group\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpeciality\u003c\/td\u003e\n\u003ctd\u003eEyepiece projection: classical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThreaded for filters\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Stop Displacement to reference plane\u003c\/td\u003e\n\u003ctd\u003e+\/- 0 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Groups\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDustcaps\u003c\/td\u003e\n\u003ctd\u003e1¼\" dustcap (31.8mm), 2\" dustcap (45mm), 2\" dustcap (46.5mm - fits over eyecup)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSlip Protect Safety\u003c\/td\u003e\n\u003ctd\u003eClassic Undercut\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Body above Reference Plane (mm)\u003c\/td\u003e\n\u003ctd\u003e84.7 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength of 1¼\" barrel (mm)\u003c\/td\u003e\n\u003ctd\u003e23.9 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength of 2\" barrel (mm)\u003c\/td\u003e\n\u003ctd\u003e27.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Series\u003c\/td\u003e\n\u003ctd\u003eHyperion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e59.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\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\"\u003eHyperion Aspheric 72° 36mm Eyepiece\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eWinged Eyecup\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDust Caps\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_Digiscoping_Camera_Adaptations_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader Planetarium Digiscoping Camera Adaptations Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_Hyperion_Aspheric_Eyepieces_Technical_Data.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader Planetarium Hyperion Aspheric Eyepieces Technical Data\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/baader-planetarium-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eBaader Planetarium Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":44967319601437,"sku":"BAA-2454636","price":299.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-Hyperion-Aspheric-72-degree-36mm-Eyepiece-1-25-inch-2-inch-1__38856.1597110715.1280.1280.jpg?v=1684340589"}],"url":"https:\/\/davidastro.com\/collections\/baader-hyperion-aspheric-eyepieces.oembed","provider":"David Astro","version":"1.0","type":"link"}