Coma-compensation telescope

Details Coma-compensation telescope Coma-compensation telescope

1985-05-28

1986-11-25

Petrakes, John

350 11, 350505, 350612, G02B 2306, G02B 1314, G02B 1700

Patent

active

046245383

ABSTRACT:
A telescope for eliminating on axis coma due to tilt of the secondary mirror in infrared astronomy. The secondary mirror of a reflecting telescope is formed to cause field coma to always be equal and opposite at the optical axis of the telescope to tilt coma regardless of the angle through the secondary mirror is tilted with respect to the optical axis.

REFERENCES:
patent: 2972743 (1961-02-01), Svensson et al.
patent: 2976533 (1961-03-01), Salisbury
patent: 3887263 (1975-06-01), Thompson, III
patent: 4439012 (1984-03-01), Christy
patent: 4494819 (1985-01-01), Lidwell
patent: 4521068 (1985-06-01), Baumen
Bottema et al.; "Third Order Aberrations in Cassegrain-Type Telescopes and Coma Correction"; Applied Optics; vol. 10, No. 2, Feb. 1971; pp. 300-303.

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