Askar FRA 400 Quintuplet APO Astrograph (F... $1,539.95
The FRA, which stands for "Flatfield Refractive Astragraph", is a refractive astrograph designed for built-in flat field correction. FRA also used in visual observation, this series creates versatile high-quality flat frame images for astrophotography, is the few great telescope of versatile optical tube. Description For easy parameter conversion between different lenses, the first-come of the FRA family features a Petzval-like quintuplet design (two pieces of which are special ED glass) with an aperture of 72mm, a focal length of 400mm and a focal ratio of f/5.6, providing a 44mm image circle. The FRA400 quintuplet astrograph has adopted modern optical design...
Askar 300 F5 Scope (FRA300) $1,199.99
Since their inception, Askar FRA series short focal ratio astrograph have been very well received by astronomical amateurs. This year, we launched the FRA300 Pro - the smallest 60mm F/5 Petzval astrograph with the fastest native focal ratio in the FRA series so far, its focal length is 300mm. Description The star is sharp and delicate. At the center of its field of view, the RMS radius can reach 2um. Even a serious user can also be satisfied when it comes to the shape of stars. It performs excellence with full-frame and supports 44mm imaging, which is a rare astrograph...
SharpStar 76EDPH Premium APO S Triplet Ref... $1,074.95
Sharpstar 76EDPH is the second arrival to the Sharpstar EDPH family. It has caught the spotlight for its aesthetic and streamline appeal since its entry to the market. Sharpstar 76EDPH features triplet air-spaced lens structure, including an ED(extra-low dispersion) glass ensuring an pleasing application in both visual observation and astrophotograph. This can effectively eliminate the chromatic aberration thus produce more detailed and higher-contrast images. Description The aperture size is 76mm, and the focal length is 418mm, so the focal ratio is f/5.5. The whole length of the main tube is only 332.9mm when used with the dew shield contracted. Its...
SharpStar 61EDPHII Premium APO S Triplet R... $639.95
Since the Sharpstar 61EDPH astrograph was launched, it has garnered a worldwide cult following. Not blinded by the accomplishment and applause, Sharpstar, humble and prudent, is willing to hear different voice from our customers. Take the advantage of the already-existing technology and its solid-performing precursor, Sharpstar 61 EDPH II, more advanced and universal, finally hit the market. Description The upgraded 61EDPH II has inherited the strengths from its predecessor. It features triplet air-spaced APO lens design, and one of which is an ED(extra-low dispersion) glass, permitting a superb performance in chromatic-aberration correction, suitable for both visual observation and astrophotograph. The...
Celestron 8" Rowe-Ackermann Schmidt Astrog... $2,810.00
Capture spectacular wide-field deep sky images in seconds with Celestron's portable astrograph, the 8" Rowe-Ackermann Schmidt Astrograph (RASA). This incredibly fast f/2.0 system is the perfect companion to today's colour astronomical CMOS cameras, smaller CCD cameras, and mirrorless cameras. Thanks to its fast focal ratio and patented optical design, you can produce sharp, detailed images and, in many cases, skip the autoguider completely. Weighing in at just 17 pounds, it's easy to transport your 8" RASA to the most remote dark sky locations. Description RASA Performance Made for Everyone The 8" RASA is an imaging telescope that delivers a flat...
SharpStar 94EDPH Premium APO S Triplet Ref... $1,899.95
Our Take on the SharpStar 94 EDPH The 94EDPH is the largest telescope in the SharpStar EDPH family. Its aperture is 94mm and the focal length is 517mm, yielding a fast focal ratio is f/5.5. The 94EDPH is designed with triplet air-spaced APO lens structure, including two pieces of ED (extra-low dispersion) glass. This allows the astrograph to produce more sharp, flat images. With its compact form factor, fantastic appearance, and superb quality, the SharpStar 94EDPH is a great telescope for visual observation and sophisticated astrophotography. Description SharpStar 94EDPH uses the same reducer as the 76EDPH, making it easy to switch between the 76 and 94 for imaging different targets....
William Optics
William Optics RedCat 51 II APO Petzval OT... $1,049.95
Designed to be the best, affordable, small, lightweight and fast Apochromatic refactor for astrophotography. The unique optical design includes the highest quality glass for the best possible color correction and flat large image circle. The result is a 51 mm objective lens, in a sleek Petzval design, for a full-frame image. Details and Features Optical Design - 51 mm lens, in a sleek Petzval design, using Synthetic Fluoride (FPL53 and FPL51) glass for a full-frame flat field image. The optical quality provides exceptional performance at a fast focal ratio of f/4.9. The Limited Edition RedCat 51 Upgrade will out resolve...
Askar FMA 230 Triplet Air-Spaced APO (FMA230) $808.00
The FMA230 has a compound lens system. The front objective lens comprises three lenses and the posterior reducer is composed of four lenses and thus it’s sometimes dubbed as a “three at the front and four at the rear” system. The aperture size of the objective lens is 50mm and the original focal length is 275mm thus we’ve got a relatively fast focal ratio of f/5.5. The objective lens contains two ED glasses which are adapted to cure chromatic aberrations. Description One can barely find an equal counterpart in the market as designing a three-element apochromatic objective lens in astrograph...
Sky-Watcher Evolux 62ED Doublet Apo Refrac... $640.00
Building on the foundation of the popular Evostar line of refractors, Sky-Watcher has developed the all new Evolux. Designed for the savvy astrophotographer looking for a lightweight scope that still packs a punch with key upgrades in the optics and the mechanics, Evolux is a perfect fit for a widefield grab and go setup. Description Sky-Watcher's Evolux apochromatic doublet refractors are the perfect blend of superior extra-low dispersion glass and affordability. The lens assembly utilizes a proprietary combination of matched lenses, delivering tack-sharp stars with charcoal-black, contrast-rich skies. All ED glass elements feature our proprietary Metallic High-Transmission Coatings (MHTC), virtually...
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Askar FRA 600 Quintuplet APO Astrograph (F... $3,339.95
Following the excellent optical performance of its first FRA400/5.6, the FRA600/5.6 is an evolution of the FRA series. An upgraded lens has a 108mm aperture and a 600mm focal length, the f/ratio is still f/5.6, and the image circle is 66mm surpass the full frame! Description This FRA600 Quintuplet Refractor is built on a Petzval design, comprising a front triplet and rear doublet lenses, two pieces of which are ED glass. This combination provides a high level of apochromatic performance for astroimaging. With wonderful optical design, the FRA600 astrograph provides a 66mm image circle to ensure excellent star shape across...
William Optics
William Optics ZenithStar 81 Doublet APO (... from $1,124.95
The William Optics telescope package is fit for incredible and successful imaging sessions! If you have been looking for the ultimate William Optics viewing experience, you have found it! The 81mm ZenithStar APO refractor from William Optics is a great addition to the ranks of telescopes that are devoted to providing fantastic astro-images through high-quality optics and chromatic aberration correction. Not only does the Z81 telescope have good optics, but it's also easy to use and very portable! Equipped with FPL-53 glass, this apochromatic refractor provides beautiful colors and clear details. Z81 telescopes have an image circle that works well...
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Orion Telescopes USD
Orion 8" f/4 Newtonian Reflector Astrograp... $949.95
In keeping with our philosophy of offering great astrophotographic gear at affordable prices, check out our 8" f/4.0 Newtonian Reflector Astrograph. For wide field, deep-space imaging performance, this telescope has few rivals. Its big 8" aperture and fast f/4.0 focal ratio allow the capture of faint galaxies and nebulas with short photographic exposure times - and for a fraction of the price that a premium "apo" refractor even half its size would cost. Description The Orion 8" f/4.0 Newtonian Reflector Astrograph is perfect for intermediate-level astrophotographers, and a great second telescope for more advanced imagers who want more portability, without...

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