Photovisual star diagonal

Details Photovisual star diagonal Photovisual star diagonal

1989-01-19

1990-06-05

Henry, Jon W.

350632, 350502, 350557, G02B 720, G02B 718, G02B 2302, G02B 2316

Patent

active

049308831

ABSTRACT:
A photovisual star diagonal is provided for use with telescopes and cameras to simplify astrophotography, including a tiltable, lockable mirror for providing alternative visual paths for viewing and/or photography.

REFERENCES:
patent: 2614454 (1952-10-01), Steffen
patent: 2974573 (1961-03-01), Faasch
patent: 3008396 (1961-11-01), Mito
patent: 3124682 (1964-03-01), Kojima et al.
patent: 4053912 (1977-10-01), Okuna et al.
patent: 4143938 (1979-03-01), Feinbloom

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