NASA NTRS · 19790002798
Anastigmatic three-mirror telescope
Abstract
A three-mirror telescope for extraterrestrial observations is described. An ellipsoidal primary mirror, a hyperbolic secondary mirror, and an ellipsoidal tertiary mirror, produce an image in a conveniently located finite plane for viewing.
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Korsch, D. G.. 1978-07-18. Anastigmatic three-mirror telescope. https://ntrs.nasa.gov/citations/19790002798
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