{"product_id":"daystar-80mm-f6-25-ed-apo-refractor","title":"Daystar 80mm f\/6.25 ED APO Refractor","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e80mm Aperture\u003c\/li\u003e\n\u003cli\u003e500mm Focal Length (f\/6.25)\u003c\/li\u003e\n\u003cli\u003eApochromatic ED Glass Optics\u003c\/li\u003e\n\u003cli\u003e2\" Rack \u0026amp; Pinion Hybrid Drive Focuser\u003c\/li\u003e\n\u003cli\u003eIncludes 90mm White Light Solar Filter \u0026amp; 2\" Diagonal\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\u003eDaystar 80mm f\/6.25 ED APO Refractor\u003c\/h2\u003e\n      \u003cp\u003eThe Daystar 80mm F\/6.25 ED APO Refractor combines a 500mm focal length with high-contrast, fluorite-based ED optics to deliver views free of false color. This complete package includes a 90mm white light solar filter, a 2\" dielectric diagonal, and a hard case, making it an exceptional instrument for both solar and night-sky observation, trusted by institutions like the National Solar Observatory for critical scientific projects.\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\u003e80mm f\/6.25 ED APO Optics: Chromatic Aberration-Free Views\u003c\/h3\u003e\n      \u003cp\u003eAt the core of this telescope are extra-low dispersion (ED) glass elements that virtually eliminate chromatic aberration. This means you see stars as sharp points of pure color and planetary details, like Jupiter's cloud bands or Saturn's rings, snap into focus with high contrast against a dark sky background. Daystar applies proprietary Metallic High-Transmission Coatings™ to maximize light throughput, while internal dual-baffles prevent stray light from reducing image contrast.\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\u003e2\" Rack \u0026amp; Pinion Hybrid Drive Focuser\u003c\/h3\u003e\n      \u003cp\u003eThe telescope is equipped with a robust 2\" rack and pinion hybrid drive focuser. This design offers the strength to carry heavy imaging trains, including cameras and filter wheels, without slipping, while maintaining the smooth, precise feel needed for critical focusing. Whether you are making fine adjustments for visual observation or locking down focus for a long exposure, this focuser provides the reliability and stability required for sharp results.\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 Complete Package: 90mm Solar Filter and 2\" Diagonal\u003c\/h3\u003e\n      \u003cp\u003eThis refractor arrives ready for observation day or night. The included 90mm universal lens filter provides safe, white-light views of the Sun, allowing you to track sunspots and witness solar transits. For nighttime viewing, the 2\" dielectric coated mirror diagonal ensures maximum reflectivity for bright, vivid images of nebulae and galaxies. Everything is protected in a durable aluminum carrying case for easy transport and storage.\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\u003eProven in the National Solar Observatory's 2017 \u0026amp; 2024 CATE Project\u003c\/h3\u003e\n      \u003cp\u003eThis specific Daystar 80mm refractor model was selected for the National Solar Observatory’s Citizen CATE (Continental-America Telescopic Eclipse) project in both 2017 and 2024. This endorsement speaks volumes about the telescope's optical quality, consistency, and mechanical reliability under demanding field conditions. When you use this telescope, you are using an instrument proven to be capable of producing scientific-grade results.\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 makes the Daystar 80mm refractor an \"APO\"?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eAn Apochromatic (APO) refractor uses special glass elements to bring all three primary colors of light (red, green, and blue) to the same focal point. This Daystar refractor uses \u003cstrong\u003efluorite-based ED (Extra-low Dispersion) glass\u003c\/strong\u003e to accomplish this, virtually eliminating the distracting purple fringing (chromatic aberration) seen around bright objects in less-corrected telescopes.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eIs the included 90mm solar filter safe for viewing the Sun?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes, absolutely. The included \u003cstrong\u003e90mm white light universal lens filter\u003c\/strong\u003e is designed to fit securely over the front of the telescope and reject harmful solar radiation before it enters the optical tube. It allows for direct, safe observation of the solar photosphere, revealing features like sunspots and granulation.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat are the advantages of the 2\" hybrid drive focuser on the Daystar 80mm?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe 2\" rack and pinion hybrid drive focuser combines the lifting power of a traditional rack-and-pinion with the smoothness of a Crayford-style focuser. This makes it ideal for astrophotography, as it can hold the weight of a DSLR or dedicated astronomy camera without slipping, while still allowing for very fine focus adjustments.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this Daystar 80mm refractor for deep-sky astrophotography?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes, the Daystar 80mm is well-suited for wide-field deep-sky imaging. Its \u003cstrong\u003e500mm focal length\u003c\/strong\u003e provides a generous field of view for large targets like the Andromeda Galaxy (M31) or the North American Nebula (NGC 7000). The f\/6.25 focal ratio is reasonably fast, and the APO optics ensure sharp, color-correct stars across the frame, though a field flattener is recommended for serious imaging.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow would this Daystar 80mm telescope perform for viewing sunspots during an eclipse?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThis is precisely the task for which this telescope was chosen for the CATE project. Using the included \u003cstrong\u003e90mm white light filter\u003c\/strong\u003e, you will get sharp, high-contrast views of sunspots and the solar limb. The 80mm aperture provides ample resolution to see fine detail in sunspot umbra and penumbra, making it an ideal instrument for tracking solar activity during an eclipse or on any clear day.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of detail can I expect on the Orion Nebula (M42) with this 80mm f\/6.25 refractor?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eWith its 80mm aperture and 500mm focal length, this telescope will frame the entire Orion Nebula (M42) beautifully. You can expect to resolve the four main stars of the Trapezium cluster at its heart and see the delicate, wispy structures of the surrounding nebulosity. The high-contrast APO optics will render the faint gas clouds against a dark background, providing a stunning wide-field view.\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\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eED Apochromatic Refractor\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e80mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e500mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/6.25\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eMetallic High-Transmission Coatings™\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003e2\" Rack \u0026amp; Pinion Hybrid Drive\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eDiagonal\u003c\/td\u003e\n\u003ctd\u003e2\" Dielectric Coated Mirror Diagonal (Included)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSolar Filter\u003c\/td\u003e\n\u003ctd\u003e90mm White Light Universal Lens Filter (Included)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eCase\u003c\/td\u003e\n\u003ctd\u003eAluminum Carrying Case (Included)\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\"\u003eDaystar 80mm F\/6.25 ED APO Refractor\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\"\u003e2\" Rack \u0026amp; Pinion Hybrid Drive Focuser\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\"\u003e90mm White Light Universal Lens Filter\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\"\u003e2\" Dielectric Coated Mirror Diagonal\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\"\u003eAluminum Carrying Case\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\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":52935164887325,"sku":"DAY-500EUD","price":1119.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/DaystarFilters-Daystar-500mm-EFL-80mm-F-6-25-ED-APO-Refractor-1_69c10119-d9df-460d-a716-6afac535215d.jpg?v=1789520795","url":"https:\/\/davidastro.com\/fr\/products\/daystar-80mm-f6-25-ed-apo-refractor","provider":"David Astro","version":"1.0","type":"link"}