Ritchey - Chretien Telescopes
Carbon Truss 32 inch f/8 Ritchey-Chrétien. Estimated one year delivery from time of the order. Price is for the OTA only, mount not included. A new alt-az mount is in design and should be completed by the end of 2006. Price on the mount TBD.
If you were asked to describe the ideal telescope for amateur astrophotography, one that offered unparalleled performance wrapped in a compact design at an affordable price, your description would likely match our new 6" f/9 Ritchey-Chretien Astrograph.
As any prolific astrophotographer will tell you, the more light you can gather, the better your astrophotos will turn out. Combine light-gathering prowess with a compact design and an affordable price, and you're likely to end up with our new 8" f/8 Ritchey-Chretien Astrograph
RC-300 300mm Flat Field Ritchey-Chretien.
Limited Production / Special Order.
12.5 inch F/9 Ritchey-Chretien scope with Zero Expansion Astro-Sitall Optics in a carbon-fiber reinforced tube. Certified to 1/5 wave Peak-Valley or better (approximately 1/25 wave RMS or better). Pictured with optional dew shield and
Mountain Instruments MI-250 German Equatorial Mount.
RC Optical Systems Carbon Truss 12.5 inch f/9 Ritchey-Chretien(pictured FSQ-106 and CCD cameras not included).
12.5 inch f/9 Ritchey-Chretien Zero Expansion Astro-Sitall Optics by Star Instruments certified to at least 1/25 RMS.
Reintroduced into a smaller, more compact package (Standard 2007 14.5RC Carbon Truss Telescope shown with f/9 ION MILLED optics).
A traditional Ritchey-Chrétien (RC) is a type of reflector that delivers a coma-free, flat field of view via hyperbolic primary and secondary mirrors. RC telescopes (from a variety of manufacturers) are found in most of the world's top observatories and NASA's Hubble Space Telescope.
RC Optical Systems Carbon Truss 16 inch f/8.4 Ritchey-Chretien Zero Expansion Astro-Sitall Optics by Star Instruments certified to at least 1/25 RMS.
RCOS 16" f/8.4 Carbon Tube Telescope, Computer Polished ULE Optics.
RCOS 16" f/9 Carbon Truss Telescope with ION Milled Ritchey-Chrétien Optics.
16 inch F/9 Ritchey-Chretien scope with Zero Expansion Astro-Sitall Optics in a carbon-fiber reinforced tube.
RC Optical Systems Carbon Truss 20 inch f/8.1 Ritchey-Chretien. 20 inch f/8.1 Ritchey-Chretien Zero Expansion Astro-Sitall Optics by Star Instruments certified to 1/25 wave RMS or better.
20 inch f/8.1 Ritchey-Chretien scope with Zero Expansion Astro-Sitall Optics in a carbon-fiber reinforced tube. Certified to 1/5 wave Peak-Valley or better (approximately 1/25 wave RMS)
RCOS 20" f/8.2 Carbon Truss Telescope, ION Milled Astro-Sitall Optics.
RCOS 20" f/8.2 Carbon Tube Telescope, ION Milled Astro-Sitall Optics.
Designed principally as a photographic instrument by American George Ritchey and Frenchman Henri Chrétien, the Ritchey-Chrétien optical design is coma free.
Designed principally as a photographic instrument by American George Ritchey and Frenchman Henri Chrétien, the Ritchey-Chrétien optical design is coma free.
Designed principally as a photographic instrument by American George Ritchey and Frenchman Henri Chrétien, the Ritchey-Chrétien optical design is coma free.