Example image of eyePlorer eyePlorer map for 'Ritchey-Chrétien telescope': Cassegrain reflector Coma (optics) Hyperboloid George Willis Ritchey Henri Chrétien United States Naval Observatory United States Naval Observatory Flagstaff Station Astigmatism Spherical aberration Focal length Radius of curvature (optics) Conic constant Interferometry Null corrector Hubble Space Telescope Schmidt-Cassegrain telescope RC Optical Systems Apache Point Observatory Calar Alto Observatory Chile Gemini Observatory Gran Telescopio Canarias Hale telescope Herschel Space Observatory Kitt Peak National Observatory Mauna Kea Observatory New Mexico Paranal Observatory Roque de los Muchachos Observatory Rozhen Observatory Sloan Digital Sky Survey Spitzer Space Telescope Subaru (telescope) United States Very Large Telescope VISTA (telescope) W. M. Keck Observatory WIYN Observatory List of largest optical reflecting telescopes Aristarchos 2.3 m Telescope OGS Telescope World Space Observatory Alois Purgathofer Astrograph Arto Oksanen Kopernik Space Center California Extremely Large Telescope ESA Space Debris Telescope Infrared Space Observatory Liverpool Telescope
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