A variety of four-mirror telescopes are described, all corrected for spherical aberration, coma, and astigmatism; all unobscured; and all with spherical surfaces. Performance is discussed with an afocal beam expander and a flat-field telescope as typical design examples.
© 1978 Optical Society of America
Original Manuscript: September 8, 1977
Published: April 1, 1978
David R. Shafer, "Four-mirror unobscured anastigmatic telescopes with all-spherical surfaces," Appl. Opt. 17, 1072-1074 (1978)
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Proc. Phys. Soc. London
- C. R. Burch, Proc. Phys. Soc. London 59, 41 (1947). [CrossRef]
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