{"title":"Explore Scientific Apochromatic Refractors","description":"\u003cp\u003eExplore Scientific apochromatic refractors are air-spaced triplets built for sharp, color-free views and imaging. The range includes the ED80, ED102, 127mm f\/7.5 and ED152 tubes, in Essential Series or FCD100 Series versions, with carbon fiber or aluminum tubes and a 2.5\" HEX focuser on the larger models.\u003c\/p\u003e\u003cp\u003eSeveral bundles add a field flattener, a 0.8x focal reducer or an iEXOS-100 PMC-Eight equatorial tracker, so the ED80 and ED102 can serve as a complete portable imaging setup.\u003c\/p\u003e","products":[{"product_id":"explore-scientific-ed80-fcd100-series-triplet-apo-refractor","title":"Explore Scientific ED80-FCD100 Series Triplet APO Refractor","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eApochromatic Triplet Refractor\u003c\/li\u003e\n\u003cli\u003eGenuine HOYA FCD100 ED Glass\u003c\/li\u003e\n\u003cli\u003eAir-Spaced Optical Design\u003c\/li\u003e\n\u003cli\u003eProprietary EMD Multi-Layer Coatings\u003c\/li\u003e\n\u003cli\u003eHeavy-Duty Hexagonal Focuser\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\u003eExplore Scientific ED80-FCD100 Series Triplet APO Refractor\u003c\/h2\u003e\n\u003cp\u003eThe Explore Scientific ED80-FCD100 Series Triplet APO Refractor uses an air-spaced triplet optical design with genuine HOYA FCD100 extra-low dispersion glass to deliver exceptional chromatic aberration correction. This design produces true-to-life color fidelity and sharp, high-contrast views of everything from fine lunar details to deep-sky objects. Its proprietary EMD multi-layer coatings further optimize light transmission for brilliant, clear images across the entire field of view.\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\u003eApochromatic Triplet Optics with HOYA FCD100 Glass\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the ED80 is an air-spaced triplet lens assembly featuring HOYA FCD100 glass, a material with optical properties comparable to the highly-regarded Ohara FPL-53. This apochromatic design virtually eliminates chromatic aberration, preventing false color fringing around bright objects like Jupiter and bright stars. The result is a pure, high-contrast image with accurate color rendition, allowing you to see subtle planetary details and resolve tight double stars with confidence.\u003c\/p\u003e\n\u003cp\u003eTo maximize image brightness, all optical surfaces receive Explore Scientific's Enhanced Multilayer Deposition (EMD) coatings. These specialized coatings are designed to boost light transmission, ensuring that the faintest wisps of nebulosity and distant galaxies reach your eye or camera sensor.\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\u003eHeavy-Duty Hexagonal Focuser for Astrophotography\u003c\/h3\u003e\n\u003cp\u003eDesigned for the demands of imaging, the ED80-FCD100 is equipped with a rugged hexagonal focuser. This robust design provides a stable, flex-free platform for camera payloads, capable of supporting a full imaging train including a DSLR or dedicated astronomy camera, filter wheel, and off-axis guider. The focuser action is smooth and precise, allowing for critical focus adjustments necessary for high-resolution planetary and deep-sky astrophotography.\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\u003eA Versatile Grab-and-Go or Guiding Instrument\u003c\/h3\u003e\n\u003cp\u003eThe compact and lightweight nature of the ED80-FCD100 makes it an exceptional \"grab-and-go\" telescope for quick observing sessions or travel to dark-sky sites. While its portable design is a key advantage, it doesn't sacrifice optical integrity, serving as a high-end primary instrument. This portability also makes it a superb choice as a guide scope, mounting easily alongside a larger primary telescope to provide precise guiding for long-exposure astrophotography.\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 makes the Explore Scientific ED80-FCD100 an \"Apochromatic\" (APO) refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAn apochromatic refractor brings three wavelengths of light (red, green, and blue) to the same focal point. The \u003cstrong\u003eExplore Scientific ED80-FCD100\u003c\/strong\u003e achieves this using a three-element (triplet) lens design that incorporates a special lens made from \u003cstrong\u003eHOYA FCD100 extra-low dispersion (ED) glass\u003c\/strong\u003e. This virtually eliminates chromatic aberration, or false color, resulting in significantly sharper, higher-contrast images than standard achromatic refractors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the HOYA FCD100 glass in the ED80-FCD100 perform?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eHOYA FCD100 is a premium optical glass known for its extremely low dispersion properties, which are critical for color correction. Its performance is widely considered to be on par with Ohara's FPL-53 glass, another benchmark material for high-end apochromatic refractors. This allows the ED80-FCD100 to deliver views with true-to-life color and excellent contrast.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the focuser on the ED80-FCD100 suitable for astrophotography with a DSLR?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The telescope features a heavy-duty hexagonal focuser specifically designed to handle the weight of an astrophotography setup. It provides a rigid and stable platform that prevents sagging or flexure, even with a DSLR, filter wheel, or dedicated astronomy camera attached, ensuring your focus remains sharp throughout an imaging session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan the Explore Scientific ED80-FCD100 be used for both visual observing and imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The ED80-FCD100 is designed as a versatile, high-end instrument. Its superb color correction and contrast make it a joy for visual observation of the Moon, planets, and bright deep-sky objects. At the same time, its robust focuser and clean optics make it an excellent astrophotography platform.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow would the ED80-FCD100 perform visually on a target like the Orion Nebula (M42)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eOn the Orion Nebula (M42), the ED80-FCD100's apochromatic optics would provide a high-contrast view with pinpoint stars. The lack of chromatic aberration means the bright stars of the Trapezium cluster at the nebula's core would resolve cleanly without distracting purple halos. You could expect to see fine details and structure within the nebulosity against a dark sky background.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the ED80-FCD100 as a guide scope on a larger SCT for imaging the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the ED80-FCD100 is an excellent choice for a high-quality guide scope. Its lightweight and compact design make it easy to mount on a larger instrument, like a Schmidt-Cassegrain Telescope (SCT). When paired with a guide camera, its sharp optics will provide the precise tracking necessary for long-exposure images of large targets like the Andromeda Galaxy (M31).\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\u003eGTIN\u003c\/td\u003e\n\u003ctd\u003e8122570176076\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\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/explore-scientific-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eExplore Scientific Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":44967207371037,"sku":"ES-FCD100-0806-02","price":1567.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Explore-Scientific-ED80-FCD100-Series-Air-Spaced-Triplet-Refractor-FCD100-0806-01-FCD100-0806-01-1__55037.1594240386.1280.1280.jpg?v=1684339015"},{"product_id":"explore-scientific-ed102-fcd100-series-triplet-apo-refractor","title":"Explore Scientific ED102-FCD100 Series Triplet APO Refractor","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e102mm Aperture\u003c\/li\u003e\n\u003cli\u003e714mm Focal Length (f\/7)\u003c\/li\u003e\n\u003cli\u003eAir-Spaced Triplet Apochromatic Design\u003c\/li\u003e\n\u003cli\u003eGenuine HOYA FCD100 ED Glass Element\u003c\/li\u003e\n\u003cli\u003e2.5\" HEX Focuser with 10 lb Capacity\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\u003eExplore Scientific ED102-FCD100 Series Triplet APO Refractor\u003c\/h2\u003e\n\u003cp\u003eThe Explore Scientific ED102-FCD100 Series Triplet APO Refractor combines a 102mm aperture with a 714mm focal length for a versatile f\/7 optical system that excels at both wide-field imaging and high-magnification visual work. Its air-spaced triplet objective uses genuine HOYA FCD100 glass to deliver textbook color correction, while the robust 2.5\" HEX focuser supports imaging payloads up to 10 lbs on an optical tube assembly that weighs only 12 lbs.\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\u003eA 102mm Triplet with FCD100 Glass: True Apochromatic Correction\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the ED102 is an air-spaced triplet objective featuring a genuine HOYA FCD100 extra-low dispersion (ED) glass element. This design achieves a true apochromatic level of performance, virtually eliminating the chromatic aberration (false color) that can plague simpler doublet designs. The result is a pristine, high-contrast view with pinpoint stars on a black background and no distracting purple halos around bright objects like Jupiter or Vega.\u003c\/p\u003e\n\u003cp\u003eAll optical surfaces receive Explore Scientific's proprietary EMD (Enhanced Multilayer Deposition) coatings to maximize light transmission and contrast. This ensures that the subtle coloration of planetary cloud bands and the faint, wispy details in nebulae are rendered with stunning fidelity.\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\u003eImaging-Ready Mechanics: A 2.5\" Focuser and 12 lb Portability\u003c\/h3\u003e\n\u003cp\u003eBuilt for astrophotography, the ED102 is equipped with a heavy-duty 2.5\" hexagonal rack-and-pinion focuser. This rigid design prevents flexure and slippage even when carrying a 10 lb imaging train consisting of a camera, filter wheel, and off-axis guider. The smooth, dual-speed controls allow for precise focus adjustments critical for capturing sharp stellar images.\u003c\/p\u003e\n\u003cp\u003eThe entire optical tube assembly weighs a manageable 12 lbs, making it an ideal \"grab-and-go\" instrument on a mid-sized equatorial mount. Its compact form factor also allows it to serve as a premium, large-aperture guide scope or a secondary imaging scope mounted alongside a larger instrument.\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\u003eWhy a Triplet? The ED102-FCD100 vs. Standard ED Doublets\u003c\/h3\u003e\n\u003cp\u003eWhile a standard ED doublet refractor provides a significant step up from an achromat, it still exhibits a degree of residual false color. The Explore Scientific ED102-FCD100's third lens element, made from high-refractive-index glass, is specifically engineered to correct this remaining chromatic aberration. This provides a distinct advantage for imagers and discerning visual observers.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor Astrophotography:\u003c\/strong\u003e The triplet design produces smaller, tighter star images with no blue or violet bloat. This allows for more accurate color data acquisition and results in images with higher resolution and better overall aesthetics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor Visual Observing:\u003c\/strong\u003e On the lunar limb or the cloud tops of Jupiter, the triplet's superior color correction delivers a sharper, higher-contrast image. The absence of color fringing makes it easier to resolve fine details at high magnification.\u003c\/li\u003e\n\u003c\/ul\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 advantage of the Explore Scientific ED102-FCD100's triplet design?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eair-spaced triplet objective with HOYA FCD100 glass\u003c\/strong\u003e in the ED102-FCD100 provides a higher level of color correction than standard ED doublets. This third lens element virtually eliminates chromatic aberration, resulting in sharper stars, higher contrast, and more faithful color rendition, which is especially critical for astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does HOYA FCD100 glass in the ED102 refractor compare to FPL-53?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eHOYA FCD100 is an extremely high-quality extra-low dispersion glass with optical properties comparable to Ohara's renowned FPL-53. Both are considered premier glasses for apochromatic refractors, offering exceptional correction of false color for pristine, high-contrast images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan the 2.5\" HEX focuser on the ED102-FCD100 handle a full imaging train?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The \u003cstrong\u003e2.5\" hexagonal rack-and-pinion focuser\u003c\/strong\u003e is specifically designed for imaging. It has a stated capacity of \u003cstrong\u003e10 lbs\u003c\/strong\u003e, which is more than sufficient to support a typical setup including a cooled astronomy camera, a filter wheel, and an off-axis guider without sagging or focus shift.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount is needed for the Explore Scientific ED102-FCD100?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith an optical tube weight of only \u003cstrong\u003e12 lbs\u003c\/strong\u003e, the ED102-FCD100 is quite versatile. For visual use, a mount in the Celestron AVX or Sky-Watcher HEQ5 class is ideal. For serious astrophotography, stepping up to a mount with a 30-40 lb payload capacity, such as a Celestron CGEM II or Sky-Watcher EQ6-R Pro, is recommended to ensure stability and precise tracking.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the ED102-FCD100 perform on planetary targets like Jupiter from the city?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ED102-FCD100 is an excellent planetary telescope, even from light-polluted areas. Its apochromatic optics deliver a high-contrast image, allowing you to easily resolve Jupiter's main cloud belts, the Great Red Spot, and the shadows of its Galilean moons. The \u003cstrong\u003e714mm focal length\u003c\/strong\u003e provides ample magnification with standard eyepieces or a Barlow lens.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the f\/7 focal ratio of the ED102-FCD100 good for imaging large nebulae like the Veil Nebula (NGC 6960)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe f\/7 focal ratio of the ED102 is a versatile sweet spot. It is fast enough to capture significant signal on nebulae in a reasonable time, while the \u003cstrong\u003e714mm focal length\u003c\/strong\u003e provides a field of view that can frame large targets like the Veil Nebula or the Andromeda Galaxy (M31) with most modern astronomy cameras. For even wider fields, a dedicated focal reducer can be added.\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\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e102mm (4\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e714mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eAir-Spaced Triplet Apochromat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlass Type\u003c\/td\u003e\n\u003ctd\u003eHOYA FCD100 ED Element\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eEMD (Enhanced Multilayer Deposition)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003e2.5\" Dual-Speed Hexagonal Rack \u0026amp; Pinion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser Capacity\u003c\/td\u003e\n\u003ctd\u003e10 lbs (4.5 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Tube Weight\u003c\/td\u003e\n\u003ctd\u003e12 lbs (5.4 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGTIN\u003c\/td\u003e\n\u003ctd\u003e812257017614\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\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/explore-scientific-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eExplore Scientific Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":44967207436573,"sku":"ES-FCD100-10207-02","price":2379.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Explore-Scientific-ED102-FCD100-Series-Air-Spaced-Triplet-Refractor-Telescope-FCD100-10207-01-FCD100-10207-01-1__31373.1594240388.1280.1280.jpg?v=1684339028"},{"product_id":"explore-scientific-ed102-fcd100-series-triplet-telescope-carbon-fiber","title":"Explore Scientific ED102-FCD100 Series Triplet Telescope - Carbon Fiber","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e102mm Aperture\u003c\/li\u003e\n\u003cli\u003eAir-Spaced Triplet Apochromatic Optics\u003c\/li\u003e\n\u003cli\u003ePremium HOYA FCD100 ED Glass\u003c\/li\u003e\n\u003cli\u003eCarbon Fiber Optical Tube Assembly\u003c\/li\u003e\n\u003cli\u003e2.5\" Hexagonal Rack \u0026amp; Pinion Focuser\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\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\u003eExplore Scientific ED102-FCD100 Series Triplet Telescope - Carbon Fiber\u003c\/h2\u003e\n\u003cp\u003eThe Explore Scientific ED102-FCD100 Carbon Fiber telescope combines a 102mm air-spaced triplet objective with premium HOYA FCD100 glass to deliver true apochromatic views, free of false color. Its lightweight carbon fiber construction and robust 2.5\" HEX focuser create a portable and exceptionally stable platform for high-resolution astrophotography.\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\u003eApochromatic Triplet Optics: 102mm of FCD100 Glass\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the ED102-FCD100 is a 102mm air-spaced triplet objective. This design uses three lenses to bring all visible wavelengths to a single, sharp focus. The inclusion of a genuine HOYA FCD100 ED (Extra-low Dispersion) glass element virtually eliminates chromatic aberration, resulting in images with pinpoint stars on a black background and high-contrast details on planetary surfaces.\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 ED102's Carbon Fiber Advantage: Lightweight and Thermally Stable\u003c\/h3\u003e\n\u003cp\u003eThe carbon fiber tube reduces the overall weight of the optical tube assembly, making it easier to transport and compatible with a wider range of mid-sized equatorial mounts. Beyond weight savings, carbon fiber's low coefficient of thermal expansion means the telescope holds focus more reliably during long imaging sessions as ambient temperatures drop, a critical advantage for astrophotography.\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\u003eHeavy-Duty Imaging: The 2.5\" HEX Focuser\u003c\/h3\u003e\n\u003cp\u003eTo handle modern imaging trains, the ED102-FCD100 is equipped with a rigid 2.5\" hexagonal rack-and-pinion focuser. This design prevents the flexure and image shift that can plague lesser focusers when loaded with a heavy DSLR, cooled CMOS camera, filter wheel, and off-axis guider. The result is a solid, repeatable focusing mechanism that can carry a heavy payload without compromise.\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\u003eED102 FCD100 Triplet vs. a 102mm ED Doublet: Color Correction\u003c\/h3\u003e\n\u003cp\u003eWhile a high-quality ED doublet refractor is a capable instrument, it is often more affordable and lighter than a triplet. However, the ED102-FCD100's triplet design provides a superior level of color correction. The third lens element allows for a more precise convergence of the light paths, especially in the challenging blue-violet end of the spectrum. For an imager or visual observer, this means:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo Chromatic Aberration:\u003c\/strong\u003e Bright stars like Vega or Sirius resolve as sharp points without any distracting purple halos.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigher Contrast:\u003c\/strong\u003e By eliminating unfocused violet light that can wash out an image, subtle details like the Cassini Division in Saturn's rings or faint dust lanes in galaxies become more visible.\u003c\/li\u003e\n\u003c\/ul\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 are the main advantages of the Explore Scientific ED102-FCD100's carbon fiber tube?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe carbon fiber tube offers two key benefits. First, it is \u003cstrong\u003esignificantly lighter\u003c\/strong\u003e than an equivalent aluminum tube, making the telescope easier to handle and placing less strain on your mount. Second, it has \u003cstrong\u003esuperior thermal stability\u003c\/strong\u003e, meaning it expands and contracts very little with temperature changes, which helps maintain sharp focus during long astrophotography sessions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the HOYA FCD100 glass in the ED102 triplet improve images?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eHOYA FCD100 is a premium Extra-low Dispersion (ED) glass that has optical properties very similar to fluorite. In the ED102's triplet lens design, it is the key element responsible for \u003cstrong\u003eeliminating chromatic aberration\u003c\/strong\u003e (false color). This results in razor-sharp stars, higher contrast, and true-to-life colors, which is essential for both high-resolution imaging and critical visual observation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 2.5\" HEX focuser on the ED102-FCD100 suitable for a full astrophotography setup?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. The 2.5\" HEX focuser is specifically designed to support the weight of a heavy imaging train. Its hexagonal drawtube and rack-and-pinion mechanism prevent sagging and flexure, ensuring that your camera, filter wheel, and guider remain perfectly aligned with the optical axis. This rigidity is crucial for achieving sharp, round stars across the entire image frame.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Explore Scientific ED102-FCD100 perform on a bright target like the Orion Nebula (M42)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ED102-FCD100 will provide exceptional views of the Orion Nebula (M42). Its apochromatic optics will render the stars of the Trapezium cluster as distinct, pinpoint diamonds of light without any color fringing. You will be able to resolve the delicate structures and wisps of nebulosity with high contrast against a dark sky background, making it an ideal instrument for both viewing and imaging this deep-sky showpiece.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the ED102-FCD100 for high-magnification planetary viewing of Jupiter or Saturn?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the ED102-FCD100 is an excellent planetary telescope. Its freedom from chromatic aberration allows you to push the magnification high on nights of good seeing. You can expect to see fine details like the cloud bands and Great Red Spot on Jupiter, and the Cassini Division in Saturn's rings, with crisp, high-contrast views.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount is recommended for the Explore Scientific ED102-FCD100?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor visual use, a medium-duty alt-azimuth mount would be sufficient. For astrophotography, a mid-sized German Equatorial Mount (GEM) with GoTo capability is recommended to handle the telescope and associated imaging gear. Look for mounts in the payload class of the Celestron AVX, Sky-Watcher EQ6-R Pro, or iOptron CEM40 for stable, long-exposure imaging.\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\u003eGTIN\u003c\/td\u003e\n\u003ctd\u003e812257018420\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\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/explore-scientific-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eExplore Scientific Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":44967207469341,"sku":"ES-FCD100-10207-CF-01","price":2659.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Explore-Scientific-ED102-FCD100-Series-Air-Spaced-Triplet-Telescope-in-Carbon-Fiber-FCD100_25E2_2580_259310207-CF-FCD100-10207-CF-1__24574.1594240388.1280.1280.jpg?v=1684339033"},{"product_id":"explore-scientific-fcd100-series-127mm-f-7-5-triplet-apo-refractor-aluminum-with-2-5-hex-focuser","title":"Explore Scientific FCD100 Series 127mm f\/7.5 Triplet APO Refractor - Aluminum with 2.5\" HEX Focuser","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e127mm (5\") Aperture\u003c\/li\u003e\n\u003cli\u003ef\/7.5 Focal Ratio\u003c\/li\u003e\n\u003cli\u003eAir-Spaced Triplet Apochromatic Optics\u003c\/li\u003e\n\u003cli\u003eHOYA FCD100 ED Glass Element\u003c\/li\u003e\n\u003cli\u003e2.5\" Hexagonal Rack-and-Pinion Focuser\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\u003eExplore Scientific FCD100 Series 127mm f\/7.5 Triplet APO Refractor - Aluminum with 2.5\" HEX Focuser\u003c\/h2\u003e\n\u003cp\u003eThe Explore Scientific FCD100 Series 127mm f\/7.5 Triplet APO Refractor combines a large, diffraction-limited objective with premium optical materials to deliver pristine, high-contrast images. Its air-spaced triplet lens and robust 2.5\" HEX focuser create an exceptional platform for both demanding visual observation and advanced astrophotography.\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\u003e127mm FCD100 Triplet Optics: Apochromatic Views at f\/7.5\u003c\/h3\u003e\n\u003cp\u003eAt the heart of this refractor is a 127mm air-spaced triplet objective featuring genuine HOYA FCD100 glass. This extra-low dispersion (ED) element virtually eliminates chromatic aberration, resulting in images free of false color and purple fringing around bright stars and planetary limbs. Combined with Explore Scientific's EMD enhanced multi-layer coatings, the optical system delivers maximum light transmission for brilliant, true-to-life views.\u003c\/p\u003e\n\u003cp\u003eThe f\/7.5 focal ratio provides a versatile balance, offering enough magnification for fine details on Jupiter's cloud bands and Saturn's rings while remaining wide enough to frame many deep-sky targets. Stars resolve to sharp, pinpoint dots against a dark sky, revealing subtle structures in nebulae and galaxies that lesser optics would smear.\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\u003e2.5\" HEX Focuser: A Smooth and Stable Imaging Platform\u003c\/h3\u003e\n\u003cp\u003eThe telescope includes a rigid 2.5\" hexagonal rack-and-pinion focuser designed to prevent flexure and slippage, even with heavy camera setups. This design offers greater stability than conventional Crayford focusers, ensuring your imaging train remains securely aligned throughout a long exposure. The smooth, precise motion allows for critical focus adjustments necessary for high-resolution planetary imaging and sharp deep-sky astrophotography.\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 127mm Tube Assembly: Integrated for Field Use\u003c\/h3\u003e\n\u003cp\u003eThe aluminum optical tube is engineered for both durability and portability. It incorporates several features designed for practical use in the field, minimizing setup time and improving your observing sessions.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetractable Dew Shield:\u003c\/strong\u003e An integrated dew shield slides forward to prevent moisture from forming on the objective lens and blocks stray light from degrading image contrast.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCradle Rings \u0026amp; Handle:\u003c\/strong\u003e The included cradle ring assembly provides a secure mounting point and features a top-mounted handle, making the 127mm optical tube easy to carry and mount.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVixen-Style Dovetail:\u003c\/strong\u003e A standard V-style dovetail plate ensures compatibility with a wide range of common astronomical mounts right out of the box.\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\u003eFCD100 vs. FPL-53 Glass: The Apochromatic Difference\u003c\/h3\u003e\n\u003cp\u003eIn the world of apochromatic refractors, two glass types stand out for their exceptional color correction: Ohara FPL-53 and HOYA FCD100. Both are elite extra-low dispersion glasses that allow optical designers to bring the entire visual spectrum to a single, sharp focus point. Choosing between them is less about one being superior and more about the specific optical design it enables.\u003c\/p\u003e\n\u003cp\u003eBy using FCD100 in this 127mm triplet, Explore Scientific achieves a level of apochromatic correction that produces textbook-perfect star images and neutral color rendition. For an observer, this means the highest possible contrast and sharpness that the 127mm aperture can deliver, uncompromised by distracting chromatic aberration.\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\"\u003eHow does the Explore Scientific FCD100 127mm APO perform on planets like Jupiter and Saturn?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis telescope excels at planetary observation. The 127mm aperture resolves fine details, while the apochromatic FCD100 optics ensure maximum contrast without false color. You can expect to clearly see Jupiter's main cloud bands, the Great Red Spot, and the Cassini Division in Saturn's rings under steady seeing conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Explore Scientific 127mm Triplet suitable for imaging a large nebula like the North American Nebula (NGC 7000)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, but you will likely need a focal reducer. At its native f\/7.5 focal ratio, the telescope is well-suited for smaller nebulae and galaxies. To fit very large objects like the North American Nebula or the Andromeda Galaxy (M31) into a single frame, adding a 0.7x or 0.8x reducer\/flattener is recommended to widen the field of view.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount is required for the Explore Scientific FCD127 APO?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor visual use, a medium-duty equatorial mount like a Celestron AVX or Sky-Watcher HEQ5 is sufficient. For astrophotography, a more robust mount in the payload class of a Sky-Watcher EQ6-R Pro or Celestron CGX is strongly recommended to ensure stability for long exposures.\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 2.5\" HEX focuser on the FCD100 127mm?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 2.5\" HEX focuser uses a hexagonal drawtube and a rack-and-pinion mechanism. This design is significantly more rigid than typical Crayford focusers, preventing tilt or flex when loaded with a heavy camera, filter wheel, and off-axis guider. It ensures your entire imaging train remains perfectly orthogonal to the light path.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does HOYA FCD100 glass compare to FPL-53 in this refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eHOYA FCD100 and Ohara FPL-53 are considered functional equivalents in their ability to correct for chromatic aberration. Both are premier ED glass types that, when used in a triplet objective lens design, produce a true apochromatic image with virtually no color fringing. The FCD100 glass in this 127mm refractor ensures it delivers performance on par with other premium APOs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use 2\" eyepieces and accessories with the Explore Scientific 127mm FCD100?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The 2.5\" focuser terminates with a standard 2\" adapter, allowing you to use any 2\" diagonal, eyepiece, or imaging accessory. A 1.25\" adapter is also typically included for use with smaller format eyepieces.\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\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eAir-Spaced Triplet Apochromatic Refractor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e127mm (5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/7.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlass Type\u003c\/td\u003e\n\u003ctd\u003eHOYA FCD100 ED Glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003e2.5\" Hexagonal Rack-and-Pinion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGTIN\u003c\/td\u003e\n\u003ctd\u003e812257017621\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\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/explore-scientific-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eExplore Scientific Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":44967207829789,"sku":"ES-FCD100-127075-02","price":3499.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Explore-Scientific-FCD100-Series-127mm-f-7-5-Aluminum-Air-Spaced-Triplet-ED-APO-Refractor-with-2-5-inch-HEX-Focuser-FCD100-127075-01-1__30104.1594240394.1280.1280.jpg?v=1684338887"},{"product_id":"explore-scientific-fcd100-series-127mm-f-7-5-triplet-apo-refractor-carbon-fiber-with-2-5-hex-focuser","title":"Explore Scientific FCD100 Series 127mm f\/7.5 Triplet APO Refractor - Carbon Fiber with 2.5\" HEX Focuser","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e127mm Aperture\u003c\/li\u003e\n\u003cli\u003ef\/7.5 Focal Ratio \/ 952mm Focal Length\u003c\/li\u003e\n\u003cli\u003eAir-Spaced Triplet Apochromat with FCD100 Glass\u003c\/li\u003e\n\u003cli\u003eCarbon Fiber Optical Tube\u003c\/li\u003e\n\u003cli\u003e2.5\" HEX Focuser\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\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\u003eExplore Scientific FCD100 Series 127mm f\/7.5 Triplet APO Refractor - Carbon Fiber with 2.5\" HEX Focuser\u003c\/h2\u003e\n      \u003cp\u003eThe Explore Scientific FCD100 Series 127mm f\/7.5 Triplet APO Refractor combines a 952mm focal length with an air-spaced triplet optical system for high-contrast planetary and deep-sky imaging. Its 2.5\" HEX focuser delivers rigid, precise control over the focal plane, while the premium HOYA FCD100 ED glass element ensures true apochromatic correction.\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 127mm FCD100 Triplet: Apochromatic Correction\u003c\/h3\u003e\n      \u003cp\u003eThe heart of this refractor is its 127mm air-spaced triplet objective, which uses a genuine HOYA FCD100 ED glass element to achieve true apochromatic correction. This design brings all wavelengths of light to a single focal point, virtually eliminating the chromatic aberration seen as purple fringing in lesser instruments. The result is pinpoint stars on a black background and high-contrast detail on planets like Saturn and Jupiter, all enhanced by EMD coatings for maximum light transmission.\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\u003eCarbon Fiber OTA: Thermal Stability at f\/7.5\u003c\/h3\u003e\n      \u003cp\u003eThe optical tube is constructed from carbon fiber, a material chosen for its high strength-to-weight ratio and low coefficient of thermal expansion. This ensures the 952mm focal length remains stable during long imaging sessions on cooling nights, minimizing the need for refocusing. The lightweight construction makes this 127mm aperture manageable, though it still requires a medium-class equatorial mount for stability.\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\u003e2.5\" HEX Focuser: Heavy Imaging Payloads\u003c\/h3\u003e\n      \u003cp\u003eAstrophotography with heavy imaging trains requires a focuser that won't slip or tilt. The 2.5\" hexagonal rack-and-pinion design meets this demand, ensuring zero image shift and repeatable, precise focus adjustments. This robust construction is essential when using large format cameras, filter wheels, and off-axis guiders.\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 kind of mount is required for the Explore Scientific 127mm FCD100 refractor?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe Explore Scientific 127mm FCD100 is a substantial optical tube and requires a robust equatorial mount for stable imaging. A mount in the 40-50 lb payload capacity class, such as an Explore Scientific EXOS-2GT or Sky-Watcher EQ6-R Pro, is recommended. The specific mounting plate is not listed as an included accessory, so you must ensure you have the correct dovetail bar for your mount.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the FCD100 glass in this 127mm refractor compare to FPL-53?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003e\u003cstrong\u003eHOYA FCD100\u003c\/strong\u003e is optically equivalent to Ohara's FPL-53, one of the most respected extra-low dispersion (ED) glasses available. Both are considered premium materials for building triplet objectives that achieve apochromatic correction. The final color correction depends on the entire optical design, but FCD100 glass places this telescope in the top tier of refractors.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat can I expect to see of the Orion Nebula (M42) with the Explore Scientific 127mm FCD100?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eWith its 127mm aperture and apochromatic optics, you will resolve fine detail within the Orion Nebula (M42). The Trapezium cluster at its heart will be cleanly split into its four primary stars, and the faint, nebulous \"wings\" of the nebula will show intricate structure and excellent contrast against a dark sky background.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 952mm focal length of the ES 127mm FCD100 a good match for imaging Andromeda (M31) with an APS-C sensor?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe 952mm focal length provides an excellent image scale for many deep-sky objects. While the Andromeda Galaxy (M31) is exceptionally large, this focal length will perfectly frame its bright core and extensive dust lanes on a typical APS-C sensor. To capture the full extent of M31 in a single frame, a focal reducer would be required.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is the carbon fiber tube on the Explore Scientific 127mm FCD100 important for astrophotography?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eCarbon fiber has a very low coefficient of thermal expansion. This means that as the ambient temperature drops overnight, the telescope tube does not shrink significantly, which keeps the focal point stable. This minimizes focus shift during a long imaging session, resulting in sharper stars from start to finish.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat accessories do I need to start using the Explore Scientific 127mm FCD100 refractor?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThis product is an optical tube assembly (OTA) only. At a minimum, you will need a mount, a diagonal, eyepieces for visual use, and a finder scope. The manufacturer does not specify any included accessories, so you should plan on supplying all necessary components to complete your telescope setup.\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\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e127mm (5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/7.5\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e952mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eAir-Spaced Triplet Apochromat\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eGlass Type\u003c\/td\u003e\n\u003ctd\u003eHOYA FCD100 ED\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003e2.5\" Dual-Speed HEX Focuser\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTube Material\u003c\/td\u003e\n\u003ctd\u003eCarbon Fiber\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eEMD (Enhanced Multilayer Deposition)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eGTIN\u003c\/td\u003e\n\u003ctd\u003e812257017812\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\"\u003eExplore Scientific 127mm FCD100 Carbon Fiber OTA\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\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/explore-scientific-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eExplore Scientific Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":44967207862557,"sku":"ES-FCD100-127075-CF-01","price":3919.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Explore-Scientific-FCD100-Series-127mm-f-7-5-Carbon-Fiber-Triplet-ED-APO-Refractor-Telescope-with-2-5-inch-HEX-Focuser-FCD100-127075-CF-1__10510.1594240395.1280.1280.jpg?v=1684338893"},{"product_id":"explore-scientific-ed152-triplet-in-carbon-fiber","title":"Explore Scientific ED152 Triplet in Carbon Fiber","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e152mm (6\") Aperture\u003c\/li\u003e\n\u003cli\u003ef\/8 Focal Ratio\u003c\/li\u003e\n\u003cli\u003eAir-Spaced Triplet Apochromatic Optics\u003c\/li\u003e\n\u003cli\u003eHOYA FCD1 Extra-Low Dispersion Glass\u003c\/li\u003e\n\u003cli\u003eCarbon Fiber Optical Tube\u003c\/li\u003e\n\u003cli\u003e20.5 lbs Optical Tube Assembly Weight\u003c\/li\u003e\n\u003cli\u003e3.3\" Dual-Speed Focuser\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\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\u003eExplore Scientific ED152 Triplet in Carbon Fiber\u003c\/h2\u003e\n\u003cp\u003eThe Explore Scientific ED152 Triplet combines a large 152mm aperture with an f\/8 optical system to deliver high-contrast, color-pure images for serious observers and astrophotographers. Its air-spaced triplet design incorporates genuine HOYA FCD1 glass to virtually eliminate chromatic aberration, while the advanced carbon fiber tube reduces the total weight to a remarkable 20.5 lbs. This instrument gathers 44% more light than a 127mm refractor, providing the resolving power needed for detailed planetary observation and deep-sky imaging from a surprisingly manageable platform.\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\u003e152mm f\/8 Triplet Optics: Apochromatic Correction with HOYA FCD1 Glass\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the ED152 is an air-spaced triplet objective lens featuring HOYA FCD1 extra-low dispersion glass. This apochromatic design corrects false color to an exceptional degree, ensuring that bright stars like Vega or Sirius resolve as sharp, white points without distracting purple halos. The f\/8 focal ratio provides a well-corrected field for imaging while keeping the optical tube a practical length, resulting in high-contrast views of lunar rilles, Jupiter's cloud bands, and the faint tendrils of nebulae.\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\u003eCarbon Fiber Construction: A 20.5 lb Six-Inch Refractor\u003c\/h3\u003e\n\u003cp\u003eA six-inch refractor is typically a heavy instrument, but the ED152's carbon fiber tube brings its weight down to just 20.5 lbs. This significant weight reduction makes the telescope compatible with a wider range of mid-sized equatorial mounts, such as the Losmandy G11, reducing the total payload requirement for a stable imaging setup. Carbon fiber also offers superior thermal stability, minimizing focus shift during long imaging sessions as ambient temperature drops.\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\u003eImaging-Ready Mechanics: 3.3\" Focuser and 2\" Diagonal\u003c\/h3\u003e\n\u003cp\u003eEngineered for demanding imaging applications, the ED152 is equipped with a robust 3.3\" focuser. This large-aperture focuser is designed to handle heavy cameras, filter wheels, and off-axis guiders without flexure, ensuring a rigid and reliable optical train. A 2\" diagonal is included for visual use, allowing you to take full advantage of wide-field 2\" eyepieces for sweeping views of the Milky Way or large objects like the Andromeda Galaxy (M31).\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\u003e125% More Light Than an ED102: The Power of a 152mm Aperture\u003c\/h3\u003e\n\u003cp\u003eThe 152mm objective provides a significant jump in light-gathering power over smaller refractors. Compared to the popular 102mm format, the ED152 collects 125% more light, and 44% more than the 127mm model. This light-gathering advantage translates directly to brighter images and shorter exposure times, allowing you to resolve fainter stars in globular clusters like M13 and capture more detail in the spiral arms of distant galaxies.\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\"\u003eHow does the carbon fiber tube on the ED152 improve performance?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe carbon fiber tube offers two main advantages. First, it reduces the optical tube's weight to just \u003cstrong\u003e20.5 lbs\u003c\/strong\u003e, making it usable on lighter, more portable equatorial mounts. Second, carbon fiber has a very low coefficient of thermal expansion, which means it resists shrinking or expanding with temperature changes, keeping the focal point stable during long imaging sessions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount is required for the Explore Scientific ED152 CF?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eGiven its \u003cstrong\u003e20.5 lbs\u003c\/strong\u003e weight, the ED152 Carbon Fiber version works well on mounts with a payload capacity of 40 lbs or more for visual use, and 50 lbs or more for stable astrophotography. Mounts like the Losmandy G11 or similar-class mounts are excellent choices.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the ED152 triplet suitable for planetary viewing of Jupiter or Saturn?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The \u003cstrong\u003e152mm\u003c\/strong\u003e apochromatic triplet optics are ideal for high-magnification planetary viewing. The HOYA FCD1 glass provides superb color correction, allowing you to see fine details like Jupiter's Great Red Spot, the Cassini Division in Saturn's rings, and subtle surface shadings on Mars with exceptional contrast and clarity.\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 152mm aperture for deep-sky objects like the Orion Nebula (M42)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe large \u003cstrong\u003e152mm\u003c\/strong\u003e aperture gathers significantly more light than smaller refractors (\u003cstrong\u003e125% more\u003c\/strong\u003e than a 102mm), which is crucial for faint deep-sky objects. On the Orion Nebula (M42), this means you'll resolve the Trapezium cluster into more distinct stars and see fainter, more intricate structures within the surrounding gas clouds, both visually and in images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does \"air-spaced triplet\" mean for the ED152's optics?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAn \"air-spaced triplet\" refers to an objective lens made of three individual glass elements separated by a thin cushion of air. This design gives optical engineers more variables to work with to correct for chromatic aberration (false color) and other optical errors, resulting in the sharp, high-contrast, apochromatic images the \u003cstrong\u003eED152\u003c\/strong\u003e produces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the HOYA FCD1 glass in the ED152 affect image quality?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eHOYA FCD1\u003c\/strong\u003e is a high-grade, extra-low dispersion (ED) glass that has optical properties similar to fluorite. Its primary function is to bend different colors of light to the same focal point. This drastically reduces chromatic aberration, leading to images that are free from color fringing and have much higher contrast and sharpness.\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\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eAir-Spaced Triplet Apochromatic Refractor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e152mm (6\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlass Type\u003c\/td\u003e\n\u003ctd\u003eHOYA FCD1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Tube Material\u003c\/td\u003e\n\u003ctd\u003eCarbon Fiber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003e3.3\" Dual-Speed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Diagonal\u003c\/td\u003e\n\u003ctd\u003e2\" Dielectric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Weight\u003c\/td\u003e\n\u003ctd\u003e20.5 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGTIN\u003c\/td\u003e\n\u003ctd\u003e811803035102\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\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/explore-scientific-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eExplore Scientific Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":44967207895325,"sku":"ES-TED15208CF-HEX33","price":5599.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Explore-Scientific-ED152-Air-Spaced-Triplet-in-Carbon-Fiber-TED15208CF-HEXDD3-TED15208CF-HEXDD3-1__94308.1594240396.1280.1280.jpg?v=1684338895"},{"product_id":"explore-scientific-es-ed-0806-fr0-8x-iexos100","title":"Explore Scientific ED80 Essential Series Air-Spaced Triplet Refractor Telescope with 0.8x Focal Reducer and iEXOS-100-2 PMC-Eight Equatorial Tracker System","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e80mm Air-Spaced Apochromatic Triplet Refractor\u003c\/li\u003e\n\u003cli\u003eiEXOS-100-2 GoTo Equatorial Mount with PMC-Eight Controller\u003c\/li\u003e\n\u003cli\u003eIncludes 0.8x Two-Element Focal Reducer\u003c\/li\u003e\n\u003cli\u003e2.5-inch Hexagonal Focuser with 10 lb Load Capacity\u003c\/li\u003e\n\u003cli\u003eWireless Control via WiFi and Bluetooth\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\u003eED80 Essential Series Air-Spaced Triplet Refractor Telescope with 0.8x Focal Reducer and iEXOS-100-2 PMC-Eight Equatorial Tracker System\u003c\/h2\u003e\n\u003cp\u003eThis complete imaging package combines the Explore Scientific ED80 Essential Series 80mm Triplet Refractor with a 0.8x focal reducer and the iEXOS-100-2 PMC-Eight GoTo mount. The optical train is supported by a robust 2.5-inch hexagonal focuser capable of handling 10-pound imaging loads and includes a 99% reflective 2-inch diagonal for brilliant visual use.\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\u003e80mm ED Triplet \u0026amp; 2.5-inch Focuser for High-Contrast Views\u003c\/h3\u003e\n\u003cp\u003eAt the heart of this package is the ED80, a true apochromatic refractor featuring an air-spaced triplet optical design with genuine HOYA FCD1 extra-low dispersion (ED) glass. This design virtually eliminates chromatic aberration, producing sharp, high-contrast images with no distracting color fringing on bright objects like Jupiter or Vega. For astrophotography, this means pinpoint stars with true color from edge to edge.\u003c\/p\u003e\n\u003cp\u003eThe optical tube is equipped with a heavy-duty 2.5-inch hexagonal focuser, engineered to carry up to 10 pounds of camera equipment without flexure or image shift. This stability is critical when using DSLRs, cooled astronomy cameras, and filter wheels. The package also includes a 99% reflective 2-inch diagonal for visual observers seeking the brightest possible views.\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\u003eIncluded 0.8x Reducer for Faster, Wider-Field Astrophotography\u003c\/h3\u003e\n\u003cp\u003eThe included 0.8x focal reducer transforms the telescope into a faster, wider-field imaging instrument. By shortening the effective focal length, this two-element reducer significantly increases the speed of the optical system, allowing your camera to gather more light in less time. This reduces required exposure times, minimizing the impact of tracking errors and thermal noise.\u003c\/p\u003e\n\u003cp\u003eThis wider perspective is ideal for capturing expansive deep-sky objects like the Andromeda Galaxy (M31) or the Veil Nebula complex. The reducer terminates in a standard 42mm T2-thread, ensuring direct and secure connection to most DSLR and dedicated astronomy cameras via a T-ring.\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\u003eiEXOS-100-2 Mount with 8-Core PMC-Eight GoTo Control\u003c\/h3\u003e\n\u003cp\u003eThe iEXOS-100-2 is a German Equatorial Mount (GEM) that provides the precise tracking essential for long-exposure astrophotography. Its GEM design follows the sky's rotation on a single axis, preventing the field rotation that can ruin images taken on alt-azimuth mounts. At its core is the revolutionary PMC-Eight controller, which uses an 8-core microcontroller to deliver responsive, smooth, and accurate GoTo slewing and tracking.\u003c\/p\u003e\n\u003cp\u003eYou can control the mount wirelessly via WiFi or Bluetooth using the free ExploreStars app on Windows, Android, or Apple tablets. For advanced users, ASCOM compatibility allows the mount to interface with virtually any PC-based astronomy software. User-friendly features like a polar alignment tunnel, an integrated bubble level, and glow-in-the-dark markers make setup in the dark straightforward and efficient.\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 kind of astrophotography is this ED80 and iEXOS-100-2 package best for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis package is optimized for wide-field deep-sky astrophotography of large nebulae, galaxies, and star clusters. The combination of the \u003cstrong\u003e80mm apochromatic optics\u003c\/strong\u003e and the \u003cstrong\u003e0.8x focal reducer\u003c\/strong\u003e creates a fast imaging system ideal for capturing faint, expansive targets. The \u003cstrong\u003eiEXOS-100-2 mount\u003c\/strong\u003e provides the accurate tracking necessary for crisp, long-exposure images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I control the iEXOS-100-2 mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe iEXOS-100-2 mount can be controlled wirelessly using its built-in \u003cstrong\u003eWiFi or Bluetooth\u003c\/strong\u003e. You can use the free \u003cstrong\u003eExploreStars application\u003c\/strong\u003e on a Windows, Android, or Apple tablet (sold separately). Alternatively, you can connect it to a PC and use the ASCOM driver to control it with popular astronomy software like N.I.N.A., Sequence Generator Pro, or Stellarium.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat do I need to add to this ED80 package to start imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis is a very complete package, but you will need to provide a few items:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eA Camera:\u003c\/strong\u003e A DSLR with a T-ring or a dedicated astronomy camera.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Source:\u003c\/strong\u003e The mount requires 8 'C' batteries (not included) or an external 12V DC power supply.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinder Scope:\u003c\/strong\u003e While a finder base is installed, a finder scope itself is not included and is recommended for initial alignment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan the ED80 with the 0.8x reducer frame the entire North American Nebula (NGC 7000)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is an excellent system for very large targets like the North American Nebula (NGC 7000). The \u003cstrong\u003e0.8x focal reducer\u003c\/strong\u003e creates a wide field of view specifically designed to fit large celestial objects into the frame of a camera with an APS-C or smaller sensor, allowing you to capture the full expanse of such nebulae in a single shot.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the iEXOS-100-2 mount sufficient for imaging Jupiter with the ED80?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. While the package is optimized for wide-field imaging, the \u003cstrong\u003eiEXOS-100-2's precise equatorial tracking\u003c\/strong\u003e is also ideal for planetary work. For imaging Jupiter, you would typically remove the focal reducer and use a Barlow lens (not included) to increase magnification. The mount will keep the planet centered on your camera's small sensor for the high-frame-rate video capture used in planetary imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is an apochromatic triplet like the ED80 better than a standard doublet refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAn apochromatic (APO) triplet uses a third lens element, including one made from \u003cstrong\u003eextra-low dispersion (ED) glass\u003c\/strong\u003e, to correct for chromatic aberration. Standard doublet refractors can struggle to bring all colors of light to the same focal point, resulting in a purple fringe around bright stars. The ED80's triplet design ensures all wavelengths focus together, yielding sharper images with true-to-life color and higher contrast.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\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\"\u003eED80 Essential Series Air-Spaced Triplet Refractor Telescope\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\"\u003e0.8x Focal Reducer with Caps \u0026amp; Adapter\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\"\u003eiEXOS-100-2 PMC-Eight Equatorial Tracker System\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\"\u003e99% Reflective 2-inch 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\"\u003e2.5-inch Hexagonal 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\"\u003eFocuser Extension Tubes\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\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\"\u003eHybrid Finder Scope Base\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\"\u003eBuilt-in Dew Shield\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 Cover \/ Lens Cap\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\/Explore_Scientific_PMC-Eight_iEXOS-100_Booklet_English_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\"\u003eDownload Manual\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\/explore-scientific-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eExplore Scientific Warranty Policy\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":52909134971165,"sku":"ES-ED-0806-FR0.8x-IEXOS100","price":1680.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ExploreScientific-ED80-Essential-Series-Air-Spaced-Triplet-Refractor-Telescope-with-0-8x-Focal-Reducer-and-iEXOS-100-2-PMC-Eight-Equatorial-Tracker-System-1_0d2b6b4a-ae51-469b-9147-ecdbfa7e4f61.jpg?v=1789060438"},{"product_id":"explore-scientific-es-ed-0806-ff-iexos100","title":"Explore Scientific ED80 Essential Series Air-Spaced Triplet Refractor Telescope (Bundle)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eED80 Air-Spaced Triplet Apochromatic Refractor\u003c\/li\u003e\n\u003cli\u003eiEXOS-100 GoTo German Equatorial Mount\u003c\/li\u003e\n\u003cli\u003eWireless PMC-Eight Precision Motion Control System\u003c\/li\u003e\n\u003cli\u003eIncludes Photographic Field Flattener for Coma Correction\u003c\/li\u003e\n\u003cli\u003eFeatures a 2-inch Rack-and-Pinion Focuser\u003c\/li\u003e\n\u003cli\u003eSupplemental Counterweight Included for Balancing\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\u003eED80 Essential Series Air-Spaced Triplet Refractor Telescope (Bundle)\u003c\/h2\u003e\n\u003cp\u003eThis Explore Scientific ED80 Essential Series bundle combines a true apochromatic refractor with the smart iEXOS-100 GoTo mount for a complete, portable imaging solution. The ED80 optical tube's air-spaced triplet design uses premium HOYA FCD1 extra-low dispersion glass to deliver high-contrast views with virtually no chromatic aberration. The included iEXOS-100 mount with its PMC-Eight control system provides accurate, wireless navigation, while the bundled field flattener and supplemental counterweight make this package ready for astrophotography right out of the box.\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\u003eED80 Triplet Optics: True Apochromatic Color Correction\u003c\/h3\u003e\n\u003cp\u003eThe heart of this package is the ED80 refractor, a true apochromat designed for crisp, color-pure images. Its air-spaced triplet objective lens, featuring premium HOYA FCD1 ED glass and proprietary EMD multi-layer coatings, virtually eliminates false color (chromatic aberration), ensuring that stars appear as sharp points of light against a dark background. This diffraction-limited optical system provides stunning contrast, making it exceptional for viewing fine details on the Moon, the rings of Saturn, and the brightest Messier objects.\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\u003eiEXOS-100 Mount: Wireless GoTo Control with PMC-Eight\u003c\/h3\u003e\n\u003cp\u003eThe iEXOS-100 is a modern German equatorial mount engineered for both portability and precision. At its core is the PMC-Eight motion control system, which uses eight independent CPUs for responsive slewing and reliable tracking accuracy essential for long-exposure astrophotography. With built-in WiFi and Bluetooth, you can control the mount wirelessly from a tablet using the free ExploreStars app, accessing a database of thousands of celestial objects. For advanced users, the system is fully ASCOM-compatible, allowing it to integrate with most popular astronomy software.\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\u003eImaging-Ready Bundle: A Coma-Free Field with the Included Flattener\u003c\/h3\u003e\n\u003cp\u003eRefractor telescopes naturally exhibit field curvature, which can cause stars at the edge of an astrophoto to appear smeared or comet-shaped—an aberration known as coma. This bundle directly addresses this by including an Explore Scientific field flattener, an essential optical accessory designed to produce sharp, point-like stars across the entire imaging sensor. Combined with the included supplemental counterweight for precise balancing, this system provides the core components you need to capture stunning, wide-field images of deep-sky objects.\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 makes this ED80 bundle a good choice for starting astrophotography?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis bundle includes the three most critical components for successful deep-sky imaging: a high-contrast apochromatic telescope (the \u003cstrong\u003eED80\u003c\/strong\u003e), a precise tracking GoTo mount (the \u003cstrong\u003eiEXOS-100\u003c\/strong\u003e), and an optical corrector (the \u003cstrong\u003efield flattener\u003c\/strong\u003e) to ensure sharp stars across your images. It's a curated package that removes the guesswork of matching components.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I control the iEXOS-100 mount in this ED80 bundle?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe iEXOS-100 mount is controlled wirelessly via \u003cstrong\u003eWiFi or Bluetooth\u003c\/strong\u003e using the free \u003cstrong\u003eExploreStars application\u003c\/strong\u003e on a Windows, Android, or Apple tablet. This app allows you to perform alignment, browse celestial objects, and command the mount to slew to targets. It can also be controlled from a PC via its ASCOM driver.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is a field flattener included with the ED80 telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA field flattener is a photographic accessory that corrects for the natural field curvature of a refractor's optics. Without it, stars at the edges of your camera's sensor would appear elongated. The included flattener is designed to work with telescopes like the ED80 to ensure your astrophotographs have sharp, pinpoint stars from corner to corner.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the ED80 telescope for visual observing as well as imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The ED80 is an exceptional visual instrument. Its apochromatic optics provide high-contrast, color-free views of the Moon, planets, and bright deep-sky objects. Simply remove the field flattener, insert a diagonal and eyepiece into the 2-inch focuser, and you're ready for a night of stargazing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will this ED80 bundle perform for imaging the Orion Nebula (M42)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis bundle is an excellent choice for a target like the Orion Nebula (M42). The ED80 provides a wide field of view that can frame the entire nebula complex, while its apochromatic optics will render the faint outer dust lanes and the bright Trapezium core with sharp detail and high contrast. The iEXOS-100's tracking will allow for the long exposures needed to capture the nebula's vibrant color.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the iEXOS-100 mount stable enough for the ED80 refractor during a long exposure of the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the iEXOS-100 mount is designed to carry portable refractors like the ED80. When properly balanced with the included counterweights, it provides the stability and tracking accuracy required for long exposures of large targets like the Andromeda Galaxy (M31). The German equatorial design ensures you can capture deep images without field rotation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\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\/Explore_Scientific_PMC-Eight_iEXOS-100_Booklet_English_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\"\u003eDownload Manual\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\/explore-scientific-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eExplore Scientific Warranty Policy\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":52909150634269,"sku":"ES-ED-0806-FF-IEXOS100","price":1680.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ExploreScientific-ED80-Essential-Series-Air-Spaced-Triplet-Refractor-Telescope-Bundle-1_d277d692-c0c2-44a1-93f7-770e2a627405.jpg?v=1789060499"},{"product_id":"explore-scientific-es-ed-0806-fr0-8x","title":"Explore Scientific ED80-FCD100 Triplet Refractor \u0026 iEXOS-100-02 Mount Bundle","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eFeatures genuine HOYA FCD100 ED glass for superior color correction\u003c\/li\u003e\n\u003cli\u003eAir-spaced triplet optical design virtually eliminates chromatic aberration\u003c\/li\u003e\n\u003cli\u003eLightweight optical tube is ideal for grab-and-go observing or as a guide scope\u003c\/li\u003e\n\u003cli\u003eiEXOS-100-02 German Equatorial mount with PMC-Eight GoTo system\u003c\/li\u003e\n\u003cli\u003eWireless control via WiFi and Bluetooth using the free ExploreStars app\u003c\/li\u003e\n\u003cli\u003eASCOM compatible for integration with third-party astronomy software\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\u003eExplore Scientific ED80-FCD100 Triplet Refractor \u0026amp; iEXOS-100-02 Mount Bundle\u003c\/h2\u003e\n\u003cp\u003eThis bundle combines the Explore Scientific ED80-FCD100 Series Air-Spaced Triplet Refractor with the iEXOS-100-02 PMC-Eight GoTo Mount, creating a complete, portable system for high-contrast visual observation and astrophotography. The optical tube uses genuine HOYA FCD100 extra-low dispersion glass to deliver sharp, color-pure images, while the sophisticated PMC-Eight motion control system provides accurate, wireless tracking of celestial objects directly from your tablet or computer.\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\u003eED80 Optics: Air-Spaced Triplet with HOYA FCD100 Glass\u003c\/h3\u003e\n\u003cp\u003eThe heart of the ED80 refractor is its air-spaced triplet lens assembly, which virtually eliminates chromatic aberration, or false color fringing. This design uses a central element made of authentic HOYA FCD100 ED glass, which provides color correction comparable to the industry-benchmark Ohara FPL-53. Combined with Explore Scientific's proprietary EMD multi-layer coatings, the optical system delivers brilliant, high-contrast views with optimized light transmission, rendering planetary details and deep-sky objects with true-to-life color fidelity.\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\u003eiEXOS-100 Mount: PMC-Eight Wireless GoTo Control\u003c\/h3\u003e\n\u003cp\u003eThe iEXOS-100 mount is powered by the Explore Scientific PMC-Eight Precision Motion Control system. This unique architecture uses eight independent CPUs to manage tracking, slewing, and communication, resulting in exceptionally responsive and reliable performance. Built-in WiFi and Bluetooth allow you to control the mount wirelessly using the free ExploreStars app, which is available for Windows, Android, and Apple tablets, turning your device into a full-featured astronomical database and GoTo controller.\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\u003ePortable Astrophotography: German Equatorial Tracking Platform\u003c\/h3\u003e\n\u003cp\u003eDesigned for portability, this German Equatorial Mount (GEM) provides the accurate sidereal tracking necessary for long-exposure astrophotography. The GEM design prevents the field rotation inherent in alt-azimuth mounts, keeping stars pinpoint sharp in your images. The system includes smooth RA and DEC locking clutches for easy balancing, an integrated bubble level, and a polar alignment sight hole to simplify setup. While the included pack uses C-cell batteries, an external lithium-ion power bank or AC adapter is recommended for extended imaging sessions, as the motors' performance can be affected by voltage drops from standard batteries.\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\u003eOptical Glass: Why HOYA FCD100 Rivals FPL-53\u003c\/h3\u003e\n\u003cp\u003eFor decades, Ohara's FPL-53 glass has been the standard for apochromatic refractors, known for its ability to bring all colors of the visual spectrum to a single focal point. HOYA FCD100 is a modern equivalent that delivers a nearly identical level of color correction and image purity. By choosing an ED80 with FCD100 glass, you get apochromatic views free of distracting purple halos around bright stars and planetary limbs, ensuring that the only colors you see are those of the cosmos itself.\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 benefit of the PMC-Eight system in the iEXOS-100-02 mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003ePMC-Eight system\u003c\/strong\u003e uses eight independent microprocessors for motion control tasks, unlike traditional single-processor mounts. This distributed architecture improves responsiveness, timing precision, and tracking accuracy, resulting in smoother slewing and more reliable performance, especially when controlled wirelessly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I control the iEXOS-100-02 mount wirelessly?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou can control the mount using its built-in \u003cstrong\u003eWiFi or Bluetooth\u003c\/strong\u003e connectivity. Simply download the free \u003cstrong\u003eExploreStars app\u003c\/strong\u003e on a compatible Windows, Android, Amazon Fire, or Apple tablet. The app allows you to perform alignment, browse a database of celestial objects, and command the mount to slew to and track your desired target.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the ED80-FCD100 telescope in this bundle suitable for astrophotography?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The ED80's apochromatic triplet optics provide a sharp, color-corrected field ideal for imaging. Paired with the iEXOS-100 German Equatorial mount, which provides accurate tracking to prevent star trails, this bundle is a capable and portable astrophotography platform for DSLRs and smaller dedicated astronomy cameras.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of objects can I see with the ED80-FCD100 and iEXOS-100 bundle?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis system is versatile enough for a wide range of celestial targets. You can expect sharp, high-contrast views of:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Moon:\u003c\/strong\u003e Craters, rilles, and mountain ranges in crisp detail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlanets:\u003c\/strong\u003e The rings of Saturn, cloud bands on Jupiter, and the phases of Venus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeep-Sky Objects:\u003c\/strong\u003e Brighter star clusters like the Pleiades (M45), nebulae like the Orion Nebula (M42), and galaxies like Andromeda (M31).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this ED80-FCD100 bundle to image the Orion Nebula (M42) with my DSLR?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is an excellent setup for imaging large, bright targets like the Orion Nebula (M42). The ED80 provides a wide field of view that can frame the entire nebula complex, and the iEXOS-100 mount will track the object accurately, allowing you to take the long exposures needed to capture its faint details and vibrant colors with a DSLR camera.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat power source is best for a long imaging session with the iEXOS-100 mount at a dark site?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor extended use, especially in cold weather, it is highly recommended to use an external power source instead of the included C-cell battery pack. A \u003cstrong\u003e12V DC lithium-ion power bank\u003c\/strong\u003e or a portable deep-cycle battery is ideal. These provide consistent voltage for many hours, ensuring the motors operate smoothly and the GoTo system remains accurate throughout your imaging session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003c!-- No specifications were provided in the source data. --\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c!-- No contents were provided in the source data. --\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\/Explore_Scientific_PMC-Eight_iEXOS-100_Booklet_English_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\"\u003eDownload Manual\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\/explore-scientific-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eExplore Scientific Warranty Policy\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":52909154795805,"sku":"ES-ED-0806-FR0.8x","price":1120.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ExploreScientific-ED80-FCD100-Series-Air-Spaced-Triplet-Refractor-Telescope-iEXOS-100-02-Mount-Bundle-1_127686fa-ba1f-4a64-9fb3-0744391c3eaa.jpg?v=1789060515"},{"product_id":"explore-scientific-es-ed-0806-ff","title":"Explore Scientific ED80 Essential Series Air-Spaced Triplet Refractor Telescope + Field Flattener f\/5 to f\/7 (Bundle)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e80mm Aperture\u003c\/li\u003e\n\u003cli\u003eAir-Spaced Apochromatic Triplet Optics\u003c\/li\u003e\n\u003cli\u003eFeatures HOYA FCD1 Extra-Low Dispersion Glass\u003c\/li\u003e\n\u003cli\u003eIncludes Field Flattener for f\/5 to f\/7 Telescopes\u003c\/li\u003e\n\u003cli\u003eRequires 55mm (+\/- 2mm) Camera Sensor Spacing\u003c\/li\u003e\n\u003cli\u003e2-inch Rack-and-Pinion Focuser\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\u003eED80 Essential Series Air-Spaced Triplet Refractor Telescope + Field Flattener f\/5 to f\/7 (Bundle)\u003c\/h2\u003e\n\u003cp\u003eThis Explore Scientific ED80 Essential Series bundle pairs a true apochromatic 80mm triplet refractor with a matched field flattener designed for systems from f\/5 to f\/7. The included flattener ensures round stars across your camera sensor by correcting field curvature, requiring a precise 55mm spacing for optimal results. Its diffraction-limited optics, featuring HOYA FCD1 glass, deliver high-contrast images through its 2-inch rack-and-pinion focuser.\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\u003eApochromatic 80mm Triplet Optics with HOYA FCD1 Glass\u003c\/h3\u003e\n\u003cp\u003eThe heart of the ED80 is its air-spaced triplet lens assembly, which provides true apochromatic correction. By using premium HOYA FCD1 extra-low dispersion glass, the optical design virtually eliminates chromatic aberration, preventing the distracting purple fringing seen on bright objects in lesser scopes. The result is a sharp, high-contrast view with neutral color, whether you're observing the bands of Jupiter or resolving tight double stars.\u003c\/p\u003e\n\u003cp\u003eAll optical surfaces feature Explore Scientific's proprietary EMD multi-layer coatings to maximize light transmission. This ensures the brightest possible images, allowing you to pull faint details out of deep-sky objects like the Orion Nebula (M42) or the Andromeda Galaxy (M31).\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\u003eImaging-Ready: Bundled Field Flattener for f\/5 to f\/7 Systems\u003c\/h3\u003e\n\u003cp\u003eThis bundle is specifically designed for astrophotography. Refractors naturally exhibit field curvature, which can cause stars at the edge of an image to appear elongated or comatic, especially with larger camera sensors. This dedicated field flattener is designed to work with telescopes in the f\/5 to f\/7 focal ratio range, correcting this distortion to deliver sharp, point-like stars across the entire frame.\u003c\/p\u003e\n\u003cp\u003eTo achieve a perfectly flat field, the flattener requires a precise back focus distance of 55mm (+\/-2mm) from the flattener's shoulder to your camera's sensor. Note that this component is for photographic use only and is not intended for visual observation.\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\u003ePortable Design with a 2-inch Rack-and-Pinion Focuser\u003c\/h3\u003e\n\u003cp\u003eThe ED80 Essential Series is built as a compact, lightweight \"grab-and-go\" instrument. It's easy to transport to a dark sky site and sets up in minutes on a light-to-medium duty mount, making it an ideal choice for spontaneous observing sessions or as a wide-field imaging scope to complement a larger instrument.\u003c\/p\u003e\n\u003cp\u003eFocusing is controlled by a 2-inch rack-and-pinion focuser, providing a stable and reliable mechanism for achieving sharp focus with both eyepieces and heavy imaging trains. The telescope also includes a pre-installed Hybrid Finder Scope Base, ready for your preferred pointing device.\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 does \"Apochromatic Triplet\" mean for the ED80's views?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAn \u003cstrong\u003eApochromatic (APO) Triplet\u003c\/strong\u003e uses a three-lens objective to bring the red, green, and blue wavelengths of light to the same focal point. The ED80 uses an air-spaced design with \u003cstrong\u003eHOYA FCD1 glass\u003c\/strong\u003e to achieve this. The practical benefit is the near-total elimination of chromatic aberration, or false color, resulting in exceptionally sharp, high-contrast images with pure color rendition, especially on bright targets like the Moon, planets, and bright stars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is the Field Flattener necessary for the ED80 Essential telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe field flattener is essential for astrophotography with a fast refractor like the ED80. It corrects for the natural curvature of the focal plane, which would otherwise cause stars at the edges of your photos to appear stretched or comatic. This bundle includes a flattener specifically matched for telescopes with focal ratios between \u003cstrong\u003ef\/5 and f\/7\u003c\/strong\u003e, ensuring your deep-sky images have sharp, pinpoint stars from corner to corner.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I achieve the required 55mm spacing for the ED80 and its field flattener?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e55mm back focus\u003c\/strong\u003e is a standard distance in astrophotography. It is measured from the rear flange of the field flattener to your camera's sensor. Most dedicated astronomy cameras and DSLR\/mirrorless cameras with a standard T-ring adapter are designed to meet this 55mm spacing requirement automatically. You may need additional M48 extension rings if your imaging train has other components like an off-axis guider or filter drawer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the ED80 Essential telescope for visual observing without the flattener?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. The ED80 is an excellent visual instrument on its own. Simply remove the field flattener and insert a 2-inch or 1.25-inch diagonal and eyepiece into the focuser. Field curvature is generally not noticeable during visual observation, so the flattener is not needed or recommended for visual use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the ED80 and flattener perform on a wide-field target like the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis setup is ideal for large targets like the Andromeda Galaxy (M31). The ED80's short focal length provides a wide field of view, allowing you to capture the entire galaxy and its satellite companions in a single frame with most astronomy cameras. The field flattener ensures that the thousands of stars across the field remain sharp, preserving the stunning detail of M31's dust lanes and bright core.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the ED80 a good choice for imaging planets like Saturn with a high-frame-rate camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile the ED80 can show you Saturn's rings visually, it is primarily a wide-field instrument. For serious planetary imaging, a telescope with a much longer focal length (like an SCT or Maksutov) is preferred to achieve the necessary image scale. You can use a Barlow lens with the ED80 to increase its magnification for planetary work, but it is optimized for capturing large deep-sky objects, not fine planetary detail.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/explore-scientific-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eExplore Scientific Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":52909164560669,"sku":"ES-ED-0806-FF","price":1120.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ExploreScientific-ED80-Essential-Series-Air-Spaced-Triplet-Refractor-Telescope-Field-Flattener-f-5-to-f-7-Bundle-1_d41eed0b-1559-438d-892d-521000355774.jpg?v=1789060550"},{"product_id":"explore-scientific-es-fcd100-102-cf-iexos100","title":"Explore Scientific ED102-FCD100 Series Air-Spaced Triplet Telescope in Carbon Fiber + iEXOS-100-02 PMC-Eight Equatorial Tracker (Bundle)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eFeatures premium HOYA FCD100 ED glass for superior color correction\u003c\/li\u003e\n\u003cli\u003eAir-spaced triplet optical design delivers high-contrast, sharp images\u003c\/li\u003e\n\u003cli\u003eLightweight and rigid carbon fiber optical tube\u003c\/li\u003e\n\u003cli\u003eiEXOS-100-02 German Equatorial Mount with PMC-Eight motion control\u003c\/li\u003e\n\u003cli\u003eWireless GoTo control via WiFi and Bluetooth with the ExploreStars app\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\u003eED102-FCD100 Series Air-Spaced Triplet Telescope in Carbon Fiber + iEXOS-100-02 PMC-Eight Equatorial Tracker (Bundle)\u003c\/h2\u003e\n\u003cp\u003eThis Explore Scientific bundle pairs the ED102-FCD100 Carbon Fiber Triplet Telescope with the iEXOS-100-02 PMC-Eight Equatorial Tracker, creating a complete, portable system for high-fidelity astrophotography and visual observation. The apochromatic refractor's air-spaced triplet optics and HOYA FCD100 glass eliminate false color, producing images with sharp, high-contrast details. The lightweight carbon fiber tube assembly places minimal demand on the included iEXOS-100 mount, which provides accurate GoTo slewing and tracking controlled wirelessly from your tablet or smartphone.\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\u003eED102-FCD100 Optics: Apochromatic Performance with FCD100 Glass\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the ED102 refractor is an air-spaced triplet objective featuring premium HOYA FCD100 extra-low dispersion (ED) glass. This optical design brings all wavelengths of light to a single focal point, delivering images virtually free of chromatic aberration. For you, this means stars are rendered as sharp points with no distracting purple halos, and fine details on planetary surfaces or within faint nebulae are resolved with exceptional clarity and contrast.\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\u003eCarbon Fiber Construction: A Lightweight and Stable Imaging Platform\u003c\/h3\u003e\n\u003cp\u003eThe optical tube is constructed from carbon fiber, a material that offers significant advantages over traditional aluminum. It provides exceptional rigidity while reducing overall weight, making the telescope easier to transport and set up for grab-and-go sessions. Carbon fiber is also less susceptible to temperature changes, which helps maintain precise focus over a long imaging session as the night cools down. A robust 2.5\" HEX focuser ensures a stable, flex-free connection for heavy cameras and accessories.\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\u003eiEXOS-100 Mount: Wireless GoTo with PMC-Eight Control\u003c\/h3\u003e\n\u003cp\u003eThe iEXOS-100-02 is a modern German equatorial mount built around the advanced PMC-Eight motion control system. Unlike single-processor designs, the PMC-Eight architecture uses a multi-processor system to manage tracking and slewing, resulting in more responsive and reliable performance. With built-in WiFi and Bluetooth, you can control the entire system wirelessly using the free ExploreStars app, which provides a full-featured planetarium interface for alignment, object selection, and sky navigation. The mount also supports ASCOM drivers for seamless integration with popular third-party astrophotography software.\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\"\u003eHow does FCD100 glass in the Explore Scientific ED102 benefit my astrophotography?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eHOYA FCD100\u003c\/strong\u003e is a premium extra-low dispersion (ED) glass that provides outstanding color correction. For astrophotography, this means stars will appear as sharp, natural-colored points without the distracting purple fringing (chromatic aberration) common in less-corrected refractors. This results in cleaner, higher-contrast images that require less corrective processing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat are the main advantages of the ED102's carbon fiber tube?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe carbon fiber tube offers two key benefits over a standard aluminum tube:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight Reduction:\u003c\/strong\u003e It is significantly lighter without sacrificing strength, making the telescope more portable and placing less strain on the mount for better tracking.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Stability:\u003c\/strong\u003e Carbon fiber expands and contracts very little with temperature changes, which helps the telescope maintain sharp focus throughout a long night of imaging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I control the iEXOS-100-02 mount wirelessly?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe iEXOS-100-02 has built-in \u003cstrong\u003eWiFi and Bluetooth\u003c\/strong\u003e. You can connect to the mount directly from a tablet or smartphone running Windows, Android, or iOS. Using the free \u003cstrong\u003eExploreStars application\u003c\/strong\u003e, you can perform a full GoTo alignment, browse its object database, and command the mount to slew to and track any target.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat makes the PMC-Eight system different from other GoTo controllers?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003ePMC-Eight Precision Motion Control\u003c\/strong\u003e system uses a multi-processor architecture, with different CPUs dedicated to specific tasks like motor control and communication. This design improves timing precision and responsiveness compared to traditional single-processor controllers, leading to more accurate and reliable tracking for astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this ED102-FCD100 and iEXOS-100 bundle suitable for imaging the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this system is an excellent choice for large targets like the Andromeda Galaxy (M31) or the North American Nebula (NGC 7000). The refractor's focal length provides a wide field of view well-suited for framing these expansive objects, and the iEXOS-100 mount's German equatorial design ensures accurate tracking to prevent field rotation during the necessary long exposures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat power source is best for the iEXOS-100 mount for a full night of imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile the mount includes a battery pack that uses C-cell batteries, their voltage can drop quickly, potentially affecting motor performance. For a full night of reliable imaging, it is highly recommended to use an external \u003cstrong\u003elithium-ion power bank or a dedicated 12V DC power supply\u003c\/strong\u003e. This ensures the PMC-Eight system receives consistent power for optimal tracking accuracy.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\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\/Explore_Scientific_PMC-Eight_Precision_Motion_Controller_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\"\u003eDownload Manual\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\/explore-scientific-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eExplore Scientific Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":52909171867933,"sku":"ES-FCD100-102-CF-IEXOS100","price":3640.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ExploreScientific-ED102-FCD100-Series-Air-Spaced-Triplet-Telescope-in-Carbon-Fiber-iEXOS-100-02-PMC-Eight-Equatorial-Tracker-Bundle-1_da67d3a4-caf0-4f10-b5b5-6fc190a327b4.jpg?v=1789060581"},{"product_id":"explore-scientific-es-fcd100-0806-fr0-8x-iexos100","title":"Explore Scientific ED80-FCD100 Air-Spaced Triplet Refractor Telescope with 0.8x Focal Reducer (Bundle)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e80mm Air-Spaced Triplet Apochromatic OTA\u003c\/li\u003e\n\u003cli\u003eIncludes a matched 0.8x Focal Reducer\u003c\/li\u003e\n\u003cli\u003eiEXOS-100 Equatorial Mount with GoTo\u003c\/li\u003e\n\u003cli\u003ePMC-Eight wireless control system\u003c\/li\u003e\n\u003cli\u003eIncludes two 2.2 lb counterweights\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\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\u003eED80-FCD100 Air-Spaced Triplet Refractor Telescope with 0.8x Focal Reducer (Bundle)\u003c\/h2\u003e\n\u003cp\u003eThis ED80-FCD100 Air-Spaced Triplet Refractor Telescope bundle assembles a complete astrophotography platform, combining an 80mm apochromatic optical tube with a matched 0.8x focal reducer for wide-field imaging. The system is supported by the iEXOS-100 GoTo mount and includes two 2.2 lb counterweights, creating a portable, ready-to-image package for capturing large nebulae and star fields.\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\u003e80mm FCD100 Triplet Optics: Apochromatic Color Correction\u003c\/h3\u003e\n\u003cp\u003eThe heart of this bundle is the 80mm air-spaced triplet refractor. This apochromatic design uses high-grade optical glass to virtually eliminate chromatic aberration, or false color, resulting in sharp, high-contrast images with pinpoint stars across the field.\u003c\/p\u003e\n\u003cp\u003eAn 80mm aperture provides an ideal balance between light-gathering power and portability. It's large enough to resolve detail in bright deep-sky objects like the Orion Nebula (M42) and the Andromeda Galaxy (M31), yet compact enough for easy transport to dark-sky sites.\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\u003eIncluded 0.8x Reducer: Faster, Wider-Field Imaging\u003c\/h3\u003e\n\u003cp\u003eThe included 0.8x focal reducer is a critical component for serious astrophotography. By reducing the telescope's effective focal ratio, it shortens required exposure times, allowing you to collect more signal in less time and reducing the demands on your mount's tracking accuracy.\u003c\/p\u003e\n\u003cp\u003eThis accessory also widens the field of view, enabling you to frame large celestial targets that would otherwise not fit in a single shot. This makes the system exceptionally well-suited for imaging expansive emission nebulae and sprawling open star clusters.\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\u003eiEXOS-100 Mount: GoTo Pointing with 4.4 lbs of Counterweights\u003c\/h3\u003e\n\u003cp\u003eThis imaging package includes the Explore Scientific iEXOS-100 equatorial mount, a complete GoTo tracking system. Driven by the PMC-Eight controller, the mount can automatically locate and track thousands of celestial objects with commands from a connected tablet, smartphone, or PC.\u003c\/p\u003e\n\u003cp\u003eThe German equatorial design is essential for long-exposure astrophotography, as it tracks the sky's rotation on a single axis to prevent field rotation. The bundle includes a total of 4.4 lbs (two 2.2 lb weights) of counterweights to precisely balance the 80mm optical tube and any attached camera gear.\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 kind of objects is the ED80-FCD100 bundle best for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis bundle is optimized for wide-field astrophotography of large deep-sky objects. With the \u003cstrong\u003e80mm aperture\u003c\/strong\u003e and the \u003cstrong\u003e0.8x focal reducer\u003c\/strong\u003e, it excels at capturing targets like the North American Nebula (NGC 7000), the Andromeda Galaxy (M31), and the Heart and Soul Nebulae (IC 1805 and IC 1848).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 0.8x focal reducer change the ED80-FCD100's imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e0.8x focal reducer\u003c\/strong\u003e provides two main benefits for astrophotography:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWider Field of View:\u003c\/strong\u003e It expands the amount of sky you can capture in a single frame, making it easier to fit large objects into the image.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFaster Imaging:\u003c\/strong\u003e It reduces the telescope's f-ratio, which decreases the exposure time needed to capture faint details. This means you can gather more data in a shorter imaging session.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat do I need to control the iEXOS-100 mount's GoTo system?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe iEXOS-100 mount is controlled by the \u003cstrong\u003ePMC-Eight system\u003c\/strong\u003e. You will need a computer, tablet, or smartphone running the ExploreStars II software (available for Windows, Android, and iOS). The mount creates its own wireless network, allowing you to connect and control it without a physical hand controller.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 4.4 lbs of counterweight with the ED80-FCD100 bundle enough?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the two included \u003cstrong\u003e2.2 lb counterweights\u003c\/strong\u003e (totaling 4.4 lbs) are supplied to balance the 80mm refractor optical tube and typical imaging equipment like a DSLR or a dedicated astronomy camera. Proper balance is crucial for the GoTo system's pointing accuracy and tracking stability.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this ED80-FCD100 bundle to image the entire North American Nebula (NGC 7000)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is an excellent system for that target. The combination of the 80mm refractor and the 0.8x reducer is specifically designed to provide a wide field of view that can easily frame the entirety of very large objects like the North American Nebula (NGC 7000) or the Veil Nebula complex.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow would the ED80-FCD100 perform for visual observing of planets like Jupiter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile the apochromatic optics will provide sharp, color-free views, an 80mm telescope is generally considered small for detailed planetary observation. You will see Jupiter's moons and its two main cloud bands, but resolving fine detail like the Great Red Spot will be challenging. This bundle is primarily designed for wide-field imaging, not high-magnification planetary viewing.\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\u003eBundle Components\u003c\/td\u003e\n\u003ctd\u003eFCD100-0806-FR0.8x -- 80mm Air-Spaced Triplet Apochromat Refractor Telescope OTA with 0.8x Focal Reducer; ES-iEXOS-100-02 -- iEXOS Equatorial Mount and Tripod with GoTo PMC-Eight System (gtin 811803030190); 2x ES-CW22-00 -- iEXOS-100 Counterweight 2.2 Pounds (gtin 811803036314)\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\"\u003e80mm Air-Spaced Triplet Apochromat Refractor Telescope OTA with Accessories\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\"\u003e0.8x Focal Reducer\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\"\u003eiEXOS-100-02 Equatorial Mount and Tripod with GoTo PMC-Eight System\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\"\u003eiEXOS-100 Counterweight (2.2 lbs)\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\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/explore-scientific-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eExplore Scientific Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":52909183828253,"sku":"ES-FCD100-0806-FR0.8x-IEXOS100","price":2380.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ExploreScientific-ED80-FCD100-Air-Spaced-Triplet-Refractor-Telescope-with-0-8x-Focal-Reducer-Bundle-1_62475710-fd7c-4915-adbd-6e5f6a0ab461.jpg?v=1789060610"},{"product_id":"explore-scientific-es-fcd100-0806-ff-iexos100","title":"Explore Scientific ED80-FCD100 Series Air-Spaced Triplet Refractor Telescope (Bundle)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eComplete astrophotography bundle with 80mm triplet refractor and GoTo mount\u003c\/li\u003e\n\u003cli\u003e80mm aperture and 480mm focal length for wide-field imaging\u003c\/li\u003e\n\u003cli\u003eHOYA FCD100 ED glass for superior chromatic aberration correction\u003c\/li\u003e\n\u003cli\u003eiEXOS-100 mount supports a 19 lb payload with PMC-Eight wireless control\u003c\/li\u003e\n\u003cli\u003eIncludes a field flattener designed for f\/5 to f\/7 systems\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\u003eED80-FCD100 Series Air-Spaced Triplet Refractor Telescope (Bundle)\u003c\/h2\u003e\n\u003cp\u003eThis Explore Scientific ED80-FCD100 bundle combines a premium 80mm triplet refractor with a portable GoTo equatorial mount, creating a complete astrophotography system ready for the field. The optical tube features a 480mm focal length and genuine HOYA FCD100 ED glass for color-true, high-contrast images, supported by a robust 2.5\" hexagonal focuser that holds up to 10 lbs of camera gear. The included iEXOS-100 mount carries a total payload of 19 lbs, easily handling the lightweight 7.5 lb telescope and your imaging train. With a dedicated field flattener and two 2.2 lb counterweights included, this package provides everything needed to start capturing stunning wide-field images of deep-sky objects.\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\u003eED80 Triplet: 80mm Aperture with HOYA FCD100 Glass\u003c\/h3\u003e\n\u003cp\u003eThe core of this bundle is the ED80 refractor, an air-spaced triplet designed for pristine imaging. Its 80mm objective lens uses HOYA FCD100 extra-low dispersion glass, which provides chromatic aberration correction comparable to Ohara's FPL-53. This design virtually eliminates false color, ensuring stars are sharp, pinpoint sources of light with accurate color fidelity. The 480mm focal length offers a wide field of view, perfect for framing large nebulae and star clusters, while Explore Scientific's EMD multi-layer coatings maximize light transmission for brighter, more detailed views.\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\u003eField Flattener for f\/5 to f\/7 Systems\u003c\/h3\u003e\n\u003cp\u003eAstrophotography with fast refractors reveals field curvature, causing stars at the edge of the frame to appear elongated. This bundle includes a field flattener specifically designed to correct this aberration in optical systems from f\/5 to f\/7. It creates a flat focal plane across your entire camera sensor, ensuring sharp stars from corner to corner. The flattener requires a precise back focus of 55mm (+\/- 2mm) between the unit and your sensor, a standard distance easily achieved with most DSLRs and dedicated astronomy cameras using common adapters.\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\u003eiEXOS-100: 19 lb Payload with PMC-Eight Control\u003c\/h3\u003e\n\u003cp\u003eThe iEXOS-100 is a sophisticated yet portable German equatorial mount. Its PMC-Eight control system uses 8 independent CPUs to deliver precise, responsive, and reliable GoTo slewing and tracking. With a total payload capacity of 19 lbs, it provides a stable platform for the 7.5 lb ED80 and a full imaging rig. Built-in WiFi and Bluetooth allow for complete wireless control from a tablet or PC using the free ExploreStars app or any ASCOM-compatible software, giving you access to a vast database of celestial objects from a user-friendly interface.\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\u003eA Complete 7.5 lb Astrophotography Rig\u003c\/h3\u003e\n\u003cp\u003eThis package is engineered as a cohesive imaging solution. The lightweight 7.5 lb optical tube is perfectly matched to the mount's 19 lb capacity, leaving ample margin for cameras, guide scopes, and other accessories. The bundle includes two 2.2 lb counterweights to achieve perfect balance. From the integrated polar sight hole for quick alignment to the wireless GoTo control and imaging-specific optics, this ED80 bundle is a powerful, portable, and complete system for capturing the night sky.\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 kind of camera is recommended for the ED80-FCD100 bundle?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis bundle is ideal for both \u003cstrong\u003eDSLR\/mirrorless cameras\u003c\/strong\u003e and \u003cstrong\u003ededicated astronomy cameras\u003c\/strong\u003e with APS-C or smaller sensors. The critical factor is achieving the required \u003cstrong\u003e55mm back focus\u003c\/strong\u003e from the field flattener's rear flange to the camera sensor. Most DSLRs naturally meet this spacing with a standard T-ring, while astronomy cameras may require a combination of extension tubes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow should I power the iEXOS-100 mount for a full night of imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe included battery pack uses \u003cstrong\u003e8 C-cell batteries\u003c\/strong\u003e, which may provide less than two hours of operation. For a full night, it is highly recommended to use an external power source. A \u003cstrong\u003e12V DC lithium-ion power bank\u003c\/strong\u003e or a compatible \u003cstrong\u003eAC power adapter\u003c\/strong\u003e will provide stable voltage and reliable performance for long imaging sessions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this ED80-FCD100 bundle for visual observation?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the ED80 telescope itself is an excellent visual instrument. However, the included \u003cstrong\u003efield flattener is for photographic use only\u003c\/strong\u003e and cannot be used with an eyepiece. To use the telescope visually, simply remove the flattener and insert a 2\" or 1.25\" diagonal and eyepiece directly into the 2.5\" focuser.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I image the Andromeda Galaxy (M31) with this 480mm focal length setup?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The 480mm focal length is nearly ideal for framing the Andromeda Galaxy (M31). When paired with an APS-C sensor, the entire galaxy, including its faint outer arms and satellite galaxies M32 and M110, will fit comfortably within a single frame, making this a perfect wide-field system for large targets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the iEXOS-100 track an object like the Orion Nebula (M42) for long exposures?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAfter a proper polar alignment using the built-in sight hole, the iEXOS-100's PMC-Eight system provides precise sidereal tracking. The German equatorial design prevents field rotation, which is critical for long exposures on deep-sky objects like the Orion Nebula (M42). For exposures longer than a minute, pairing this system with a separate autoguiding setup will yield the sharpest possible results.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat software do I need to control the iEXOS-100 mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou can control the mount wirelessly with the free \u003cstrong\u003eExploreStars app\u003c\/strong\u003e, available for Windows, Android, Amazon Fire, and Apple tablets. The mount is also fully \u003cstrong\u003eASCOM compliant\u003c\/strong\u003e. By installing the PMC-Eight ASCOM driver on a Windows PC, you can control it with most popular astronomy software, such as N.I.N.A., Sequence Generator Pro, or Stellarium.\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\u003eTelescope Optical Design\u003c\/td\u003e\n\u003ctd\u003eAir-Spaced Triplet 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\u003e480mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Glass\u003c\/td\u003e\n\u003ctd\u003eHOYA FCD100 ED Glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eEnhanced Multilayer Deposition (EMD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003e2.5\" Hexagonal Rack-and-Pinion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser Capacity\u003c\/td\u003e\n\u003ctd\u003e10 lbs (4.5 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Weight\u003c\/td\u003e\n\u003ctd\u003e7.5 lbs (3.4 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount Type\u003c\/td\u003e\n\u003ctd\u003eGerman Equatorial GoTo Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount Control System\u003c\/td\u003e\n\u003ctd\u003ePMC-Eight Precision Motion Control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount Payload Capacity\u003c\/td\u003e\n\u003ctd\u003e19 lbs (8.6 kg) total\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnectivity\u003c\/td\u003e\n\u003ctd\u003eWiFi and Bluetooth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Flattener Compatibility\u003c\/td\u003e\n\u003ctd\u003ef\/5 to f\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Flattener Back Focus\u003c\/td\u003e\n\u003ctd\u003e55mm (±2mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCounterweights Included\u003c\/td\u003e\n\u003ctd\u003e2 x 2.2 lb (1 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount Power\u003c\/td\u003e\n\u003ctd\u003e8x C-Cell Batteries (not included) or external 12V DC\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\"\u003eED80-FCD100 Triplet Refractor OTA\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\"\u003eiEXOS-100 PMC-Eight GoTo Equatorial Mount\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\"\u003eField Flattener for f\/5-f\/7 Systems\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\"\u003eTripod with Accessory Tray\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\"\u003e2.2 lb Counterweight\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\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\"\u003eBattery Pack for Mount\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\/Explore_Scientific_PMC-Eight_iEXOS-100_Booklet_English_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\"\u003eDownload Manual\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\/explore-scientific-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eExplore Scientific Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":52909188284701,"sku":"ES-FCD100-0806-FF-IEXOS100","price":2380.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ExploreScientific-ED80-FCD100-Series-Air-Spaced-Triplet-Refractor-Telescope-Bundle-1_2ba20f7a-b0f2-40a2-a9ad-8842200a6e3d.jpg?v=1789060638"},{"product_id":"explore-scientific-es-fcd100-0806-fr0-8x","title":"Explore Scientific ED80-FCD100 Series Air-Spaced Triplet Refractor Telescope + 0.8x Focal Reducer (Bundle)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e80mm Aperture\u003c\/li\u003e\n\u003cli\u003e480mm Focal Length (f\/6)\u003c\/li\u003e\n\u003cli\u003eHOYA FCD100 ED Air-Spaced Triplet Optics\u003c\/li\u003e\n\u003cli\u003eIncludes 0.8x Focal Reducer\/Corrector\u003c\/li\u003e\n\u003cli\u003e2.5\" Hexagonal Focuser\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\u003eExplore Scientific ED80-FCD100 Series Air-Spaced Triplet Refractor Telescope + 0.8x Focal Reducer (Bundle)\u003c\/h2\u003e\n\u003cp\u003eThe Explore Scientific ED80-FCD100 bundle combines an 80mm air-spaced triplet objective with a native 480mm focal length, engineered for high-contrast, color-pure astronomical views. This package includes a dedicated 0.8x focal reducer, transforming the f\/6 optical system into a faster wide-field instrument for astrophotography. Built with genuine HOYA FCD100 ED glass and weighing only 7.5 lbs, this refractor delivers true apochromatic color correction in a highly portable design.\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\u003eApochromatic Optics: The 80mm FCD100 Triplet Design\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the ED80 is an 80mm air-spaced triplet objective featuring HOYA FCD100 glass, an extra-low dispersion material that virtually eliminates chromatic aberration. This design ensures that all wavelengths of light come to the same sharp focus, resulting in images free of distracting purple fringing around bright stars and planetary limbs. The optical quality is comparable to more expensive FPL-53-based refractors, providing true-to-life color fidelity and exceptional contrast for both visual observation and critical imaging.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHOYA FCD100 Glass:\u003c\/strong\u003e Delivers superior correction of false color, rendering crisp, high-fidelity views of targets like Jupiter's cloud bands and the Moon's terminator.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEMD Multi-Layer Coatings:\u003c\/strong\u003e Proprietary coatings on all optical surfaces maximize light transmission and minimize reflections, producing brighter, higher-contrast images.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir-Spaced Triplet:\u003c\/strong\u003e This advanced optical configuration allows for precise control over light dispersion, achieving a true apochromatic flat-field image.\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\u003eImaging-Ready Mechanics: A 2.5\" Focuser in a 7.5 lb Package\u003c\/h3\u003e\n\u003cp\u003eEngineered for astrophotography, the ED80 is built around a robust 2.5\" hexagonal focuser capable of supporting imaging trains up to 10 lbs without flexure or slippage. The lightweight 7.5 lb optical tube is easy to manage on a wide range of equatorial mounts, making it an ideal grab-and-go instrument. While its 80mm aperture is perfect for wide-field targets, it also serves as a high-end guide scope for larger primary telescopes, offering pinpoint stars for precise tracking.\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\u003eWide-Field Astrophotography: The Bundled 0.8x Focal Reducer\u003c\/h3\u003e\n\u003cp\u003eThis bundle includes the Explore Scientific 0.8x Focal Reducer, which converts the telescope into a faster f\/4.8 system with a 384mm focal length. This wider, faster configuration allows your camera to capture more light in shorter exposures, revealing faint details in large emission nebulae like the North American Nebula (NGC 7000) or framing the entirety of the Andromeda Galaxy (M31). The reducer provides a corrected image circle and is threaded for standard 42mm T-rings, with a precise back focus of 55mm for connecting a DSLR or dedicated astronomy camera.\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 HOYA FCD100 glass in the ED80 refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary advantage of \u003cstrong\u003eHOYA FCD100\u003c\/strong\u003e extra-low dispersion (ED) glass is its ability to suppress chromatic aberration, or false color. This results in sharper, higher-contrast images with true color fidelity, eliminating the purple halos often seen around bright stars in less-corrected telescopes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the focal length and f-ratio of the ED80 when using the 0.8x reducer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhen the 0.8x reducer is attached, the ED80's effective focal length is shortened from 480mm to \u003cstrong\u003e384mm\u003c\/strong\u003e. This also makes the optical system faster, changing the focal ratio from f\/6 to \u003cstrong\u003ef\/4.8\u003c\/strong\u003e, which significantly reduces exposure times needed for deep-sky astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I connect my DSLR or astro camera to the 0.8x focal reducer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe reducer is designed with a standard back focus of \u003cstrong\u003e55mm (+\/- 2mm)\u003c\/strong\u003e and is threaded to accept a standard \u003cstrong\u003e42mm T-ring\u003c\/strong\u003e (M42x0.75). You will need a T-ring specific to your camera's brand (e.g., Canon, Nikon, Sony) to attach it to the reducer, followed by any necessary spacers to achieve the correct 55mm distance to your camera's sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 7.5 lb ED80-FCD100 suitable for a lightweight portable mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. At just \u003cstrong\u003e7.5 lbs\u003c\/strong\u003e, the ED80 optical tube is an excellent match for portable German equatorial mounts like the Explore Scientific iEXOS-100 or Sky-Watcher Star Adventurer GTi. This combination creates a powerful and easily transportable setup for wide-field imaging from dark sky locations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this ED80-FCD100 bundle to image large targets like the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this bundle is ideal for large targets. With the \u003cstrong\u003e0.8x reducer\u003c\/strong\u003e, the 384mm focal length provides a wide field of view that can easily frame the full extent of the Andromeda Galaxy (M31), the Pleiades (M45), or large nebulae like the Orion Nebula (M42), especially when paired with a camera that has an APS-C or larger sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat makes the 2.5\" hexagonal focuser on the ED80 special?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e2.5\" hexagonal focuser\u003c\/strong\u003e provides a more rigid and stable drawtube than traditional round Crayford focusers. This design significantly reduces flex and tilt, especially when supporting heavier imaging equipment up to its \u003cstrong\u003e10 lb capacity\u003c\/strong\u003e. This ensures the camera sensor remains perfectly perpendicular to the optical axis for sharp stars across the entire frame.\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\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\u003e480mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eAir-Spaced Triplet Apochromat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlass Type\u003c\/td\u003e\n\u003ctd\u003eHOYA FCD100 ED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003e2.5\" Hexagonal Rack-and-Pinion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Weight\u003c\/td\u003e\n\u003ctd\u003e7.5 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReducer Factor\u003c\/td\u003e\n\u003ctd\u003e0.8x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReduced Focal Length\u003c\/td\u003e\n\u003ctd\u003e384mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReduced Focal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/4.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReducer Back Focus\u003c\/td\u003e\n\u003ctd\u003e55mm (+\/- 2mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReducer Camera Thread\u003c\/td\u003e\n\u003ctd\u003eM42x0.75 T-Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBundle Components\u003c\/td\u003e\n\u003ctd\u003eFCD100-0806-02 -- 80mm Triplet OTA (gtin 8122570176076); ES-FR0.8x -- 0.8x Focal Reducer (gtin 811803035881)\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\"\u003e80mm Air-Spaced Triplet Apochromat Refractor Telescope Optical Tube Assembly with Accessories\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\"\u003e0.8x Focal Reducer for f\/5 to f\/7 Refractors\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\/Explore_Scientific_Introduction_Booklet_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\"\u003eDownload Manual\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\u003ca href=\"https:\/\/davidastro.com\/pages\/explore-scientific-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eExplore Scientific Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":52909192053021,"sku":"ES-FCD100-0806-FR0.8x","price":1820.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ExploreScientific-ED80-FCD100-Series-Air-Spaced-Triplet-Refractor-Telescope-0-8x-Focal-Reducer-Bundle-1_5f6d005f-b10d-4b98-943f-124e413262eb.jpg?v=1789060650"},{"product_id":"explore-scientific-es-fcd100-0806-ff","title":"Explore Scientific ED80-FCD100 Series Air-Spaced Triplet Refractor Telescope + Field Flattener f\/5 to f\/7 (Bundle)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e80mm Aperture Triplet Apochromatic Refractor\u003c\/li\u003e\n\u003cli\u003eFeatures Hoya FCD100 ED Glass Element\u003c\/li\u003e\n\u003cli\u003eAir-Spaced Triplet Objective Lens\u003c\/li\u003e\n\u003cli\u003eIncludes Field Flattener for f\/5 to f\/7 Systems\u003c\/li\u003e\n\u003cli\u003eDesigned for Wide-Field Astrophotography\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\u003eED80-FCD100 Series Air-Spaced Triplet Refractor Telescope + Field Flattener f\/5 to f\/7 (Bundle)\u003c\/h2\u003e\n\u003cp\u003eThis Explore Scientific ED80-FCD100 bundle combines an 80mm apochromatic triplet refractor with a matched field flattener, creating a complete optical system for wide-field astrophotography. The included flattener is engineered to produce sharp, pinpoint stars across the entire frame on refractors operating from f\/5 to f\/7. This package is built from the ground up to deliver high-contrast, color-pure images free of distracting chromatic aberration and field curvature.\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\u003e80mm FCD100 Triplet: True Apochromatic Color Correction\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the ED80 is an 80mm air-spaced triplet objective featuring a Hoya FCD100 extra-low dispersion (ED) glass element. This three-lens design corrects for false color far more effectively than a standard doublet, virtually eliminating the purple fringing seen around bright stars and planetary limbs. The result is a true apochromatic image with sharp focus across the visual spectrum, revealing subtle color variations in nebulae and star clusters.\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\u003eFlat-Field Imaging Ready: The Included f\/5-f\/7 Flattener\u003c\/h3\u003e\n\u003cp\u003eRefractor optics naturally produce a curved focal plane, resulting in elongated stars at the edge of an image sensor. This bundle includes the Explore Scientific Field Flattener for f\/5 to f\/7 refractors, which corrects this aberration. By installing the flattener, you ensure that stars remain tight and round from the center of your image to the corners, a critical requirement for producing professional-quality astrophotographs.\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\u003eED80 Triplet vs. Doublet: A Core Imaging Choice\u003c\/h3\u003e\n\u003cp\u003eFor astrophotographers choosing an 80mm refractor, the primary decision is between a two-lens doublet and a three-lens triplet design. While an ED doublet offers a lighter, faster-cooling, and more affordable package, its color correction is inherently limited.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTriplet Advantage:\u003c\/strong\u003e The FCD100 triplet's third lens element provides a higher degree of color correction, essential for imaging with sensitive color cameras and for pushing magnification in visual use. There is no need to compromise on exposure time or processing techniques to hide chromatic aberration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoublet Trade-off:\u003c\/strong\u003e A doublet is often sufficient for casual visual use or narrowband imaging where color fringing is less of a concern. However, for one-shot-color imaging of star fields and bright nebulae, the triplet's superior color fidelity is immediately apparent.\u003c\/li\u003e\n\u003c\/ul\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 kind of astrophotography is the ED80-FCD100 bundle best for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis \u003cstrong\u003e80mm triplet refractor\u003c\/strong\u003e is ideal for wide-field deep-sky imaging. It excels at capturing large targets like the Andromeda Galaxy (M31), the North American Nebula (NGC 7000), and the Pleiades star cluster (M45) with excellent color correction and a flat field thanks to the included flattener.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the included field flattener improve images with the ED80?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe field flattener corrects for the natural field curvature of the refractor's optics. Without it, stars at the edges of your camera sensor would appear stretched or out of focus. The flattener ensures a sharp, flat focal plane across the entire imaging sensor, making your final images look professional and clean from corner to corner.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Explore Scientific ED80-FCD100 for visual observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. While optimized for imaging, the ED80 is a superb visual instrument. Its apochromatic optics provide high-contrast, color-free views of the Moon, planets, and bright double stars. For visual use, you would simply remove the field flattener and use a standard star diagonal and eyepieces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount is required for the ED80-FCD100 imaging bundle?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor astrophotography with the \u003cstrong\u003eED80-FCD100\u003c\/strong\u003e, a stable German equatorial mount with GoTo capability is highly recommended. A mount with a payload capacity of at least 20-25 lbs, such as an Explore Scientific iEXOS-100, Sky-Watcher HEQ5, or similar class mount, will provide the stability needed for sharp, long-exposure images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow would the ED80-FCD100 perform on the Heart Nebula (IC 1805)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ED80's field of view is perfectly suited for framing large emission nebulae like the Heart Nebula (IC 1805) and the nearby Soul Nebula (IC 1848). When paired with a duo-narrowband filter, the triplet optics will produce sharp, high-contrast images revealing the intricate hydrogen-alpha structures within the nebula against a dark sky background.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 80mm aperture of the ED80-FCD100 enough for planetary viewing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, an \u003cstrong\u003e80mm apochromatic refractor\u003c\/strong\u003e can provide excellent views of planets. You can expect to see Jupiter's main cloud belts and its four Galilean moons, the rings of Saturn, and polar ice caps on Mars when seeing conditions are good. Using a high-quality Barlow lens will help achieve the necessary magnification for detailed planetary observation.\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\u003eBundle Components\u003c\/td\u003e\n\u003ctd\u003eFCD100-0806-02 -- 80mm Air-Spaced Triplet Apochromat Refractor Telescope Optical Tube Assembly with Accessories (gtin 8122570176076); ES-FF2F5\/F7 -- Field Flattener for f\/5 to f\/7 Refractors (gtin 811803034297)\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\"\u003e80mm Air-Spaced Triplet Apochromat Refractor Telescope Optical Tube Assembly with Accessories\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\"\u003eField Flattener for f\/5 to f\/7 Refractors\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\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/explore-scientific-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eExplore Scientific Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":52909197263133,"sku":"ES-FCD100-0806-FF","price":1820.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ExploreScientific-ED80-FCD100-Series-Air-Spaced-Triplet-Refractor-Telescope-Field-Flattener-f-5-to-f-7-Bundle-1_c8edd3d9-eec1-498a-b875-c9a545947481.jpg?v=1789060675"}],"url":"https:\/\/davidastro.com\/en-us\/collections\/explore-scientific-apochromatic-refractors.oembed","provider":"David Astro","version":"1.0","type":"link"}