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Home ·
Telescopes · Ritchey-Chrétien astrographs
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Astro-Tech 6" f/9 Ritchey-Chrétien astrograph
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Others may copy it, but the 6” Astro-Tech AT6RC astrograph is the first and still the best. Conceived and developed by Astro-Tech, the AT6RC was named a Sky & Telescope Hot Product for 2009! It uses the same kind of Ritchey-Chrétien optical design as the Hubble Space Telescope, but at only a tiny fraction of the Hubble's cost. The AT6RC is designed for serious (but very affordable) imaging with DSLRs, webcams, and DSI-type CCD cameras.
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Astro-Tech 8" f/8 Ritchey-Chrétien astrograph with premium features
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For the amateur astronomer who is into large-format CCD imaging, the Astro-Tech AT8RC is the first truly affordable large aperture true Ritchey-Chrétien astrograph available from a U. S. company. Even better, the Sky & Telescope Hot Product for 2010 AT8RC is the first and only affordable R-C with premium features other manufacturers don’t offer – like a carbon fiber body, quartz mirrors, dielectric mirror coatings, two dovetail mounting rails, and even more.
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Astro-Tech 10" f/8 Ritchey-Chrétien astrograph
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The AT10RC is the first truly affordable large aperture true Ritchey-Chrétien astrograph available from a U. S. company. The AT10RC, priced $4000 less than the formerly least expensive 10" Ritchey-Chrétien, still has many of the premium features of high-priced RCs more than twice its reasonable cost – quartz mirrors, dielectric optical coatings, and more.
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Astro-Tech 10" f/8 Ritchey-Chrétien astrograph with carbon fiber tube and 3" Feather Touch focuser
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The AT10RCF is the first truly affordable large aperture true Ritchey-Chrétien astrograph available from a U. S. company. The AT10RCF, priced thousands of dollars less than the formerly least expensive 10" Ritchey-Chrétien, still has many of the premium features of high-priced RCs more than twice its reasonable cost – quartz mirrors, dielectric optical coatings, carbon fiber optical tube, Feather Touch rack and pinion focuser, and more.
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