Physics – Optics
Scientific paper
Jun 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988opten..27..491l&link_type=abstract
Optical Engineering (ISSN 0091-3286), vol. 27, June 1988, p. 491-497.
Physics
Optics
4
Aberration, Astigmatism, Cassegrain Optics, Infrared Imagery, Mirrors, Reflecting Telescopes, Focal Plane Devices, Schwarzschild Metric
Scientific paper
The third-order Seidel aberrations of a four-spherical-mirror system for an anastigmatic aplanat, flat field aplanat, and zero distortion aplanat are analytically derived and numerically investigated, and their residual finite ray aberrations are examined. The anastigmatic aplanat is composed of a front Cassegrainian system and a rear inverse Cassegrainian system, where the image formed by the front Cassegrainian system is relayed by the rear inverse Cassegrainian system. The flat field aplanat is similar in appearance to the anastigmatic aplanat except that the rear part is far larger than the front part. The zero distortion aplanat is composed of a front Gregorian system and a rear inverse Cassegrainian system.
Lee Jong Ung
Lee Sang Soo
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