The Hyperion telescope has been designed to give the ultimate optical performance for astroimaging by delivering the largest aberration-free field of view possible.
PERFORMANCE
Telescopes can suffer from a variety of aberrations which are inherent in different optical designs. There are six primary aberrations to worry about: spherical aberration, distortion, coma, astigmatism, field curvature and chromatic aberration.
All telescopes are corrected for spherical aberration, and distortion is not a problem over the relatively narrow fields produced by telescopes. Coma causes stars to take on an asymmetric comet-like shape off axis. Coma is inherent in Newtonians, classical Cassegrains, and most Schmidt-Cassegrain telescopes. By using an aspheric mirror, some SCTs eliminate coma. The Ritchey-Chrétien deisgn uses two hyperbolic mirrors to eliminate coma. But such designs still suffer from astigmatism and field curvature, causing enlarged star images over a large field.
The Hyperion telescope does not suffer from coma, astigmatism or field curvature. By using an afocal (zero-power) corrector lens system, it can correct for all these aberrations without inducing chromatic (color) aberration. It truly delivers the best image quality over the largest possible field of view.