iOptron Photron 150mm f/9 Ritchey-Chrétien Catadioptric Telescope

Utilizing the same hyperbolic primary and secondary mirror design used in the Hubble Space Telescope, the Keck telescopes, and the ESO Very Large Telescope, the iOptron Photron 150mm f/9 Ritchey-Chrétien Catadioptric Telescope (RCT) is ideally suited for both stargazing and astrophotography. Its relatively compact size allows it to be used on smaller mounts while delivering views that are free from off-axis comas and spherical and chromatic aberrations. The low thermal-expansion quartz primary and secondary mirrors are treated with highly reflective dielectric coatings that, when combined with internal knife-edge baffles, limit distortion as the mirrors heat while limiting stray internal light and maximizing light transmission. All this translates to bright and sharp high-contrast images with accurate color fidelity across the entire distortion-free field of view. Unlike other catadioptric designs, this RCT has a fixed primary mirror to eliminate the image shift that is common with conventional configurati...