by Astronomy Technologies
Date first available at Amazon.com: September 21, 2011
(Visit the Hot New Releases in Telescopes list for authoritative information on this product's current rank.)
Review & Description
This Astro-Tech AT8RC Ritchey-Chretien astrograph has:
The AT8RC that Astro-Tech helped develop was the first sensibly-priced 8" true Ritchey-Chretien astrograph available from a U. S. company. The AT8RC was the first sensibly-priced 8" R-C to be delivered to excited astrophotographers. And the AT8RC was the first - and is still the only - sensibly-priced R-C with premium features from a U. S. company, features like a carbon fiber body, quartz mirrors, dielectric mirror coatings, two dovetail mounting rails, and more.
The Ritchey-Chretien optical design is used in virtually every recent large mega-million dollar professional observatory telescope - including the Hubble Space Telescope. And more "affordable" true coma-free Ritchey-Chretien optical systems made for schools and individuals by commercial R-C manufacturers typically come only in large apertures and start at well over $10,000. Their size and cost put them out of the reach of most amateur astronomers. At least, true Ritchey-Chretiens used to start at $10,000 and up.
The Astro-Tech AT8RC astrograph (a telescope designed specifically for photographing comparatively wide areas of the sky) makes the coma-free imaging of true Ritchey-Chretien imaging optics available to the DSLR and CCD astrophotographer at a price less than that of most CCD cameras. It is not designed for digiscoping through an eyepiece. Featuring first-quality 99% reflectivity dielectric mirror coatings (something even the $10,000+ R-Cs typically don't have), premium low thermal expansion quartz mirrors rather than ordinary optical glass, and a high strength/low thermal expansion carbon fiber optical tube, this economical 8" Astro-Tech R-C makes you wonder just what those $10,000+ R-Cs have that makes them cost so much.
Designed for exceptional imaging, the Astro-Tech AT8RC provides the wide coma-free photographic field that DSLR and CCD astrophotographe Read more
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