กล้องดูดาว Orion 6 f/9 Ritchey-Chretien Astrograph Telescope

Description

กล้องดูดาว Orion 6 f/9 Ritchey-Chretien Astrograph Telescope Unlike conventional Newtonian reflector and Schmidt Cassegrain (SCT) designs that are susceptible to displaying coma away from the center of the field, the compact Ritchey-Chrétien design utilizes hyperbolic primary and secondary mirrors to achieve wonderfully flat images that are virtually coma-free with pinpoint star clarity. Plus, since there are no lenses in an “RC” telescope, captured images are delightfully free of chromatic aberrations for true-color performance. The enameled steel 6″ optical tube is fortified with seven computer-positioned internal light baffles, and both the primary mirror tube and secondary mirror light shield are also highly baffled to ensure maximum image contrast. Unlike Schmidt-Cassegrains, the primary mirror of these Ritchey-Chrétien telescopes is fixed in-place to eliminate annoying “image shift” that can wreak havoc during imaging sessions. All these elements come together to make Orion Ritchey-Chrétien Astrographs ideal tools for capturing detailed images of deep-space objects with small-format CCD cameras and DSLR cameras with APS-C sized sensors.

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