Planet projection

Details Planet projection Planet projection

1980-08-27

1982-01-19

Skogquist, Harland S.

Education and demonstration

Science

Astronomy

G09B 2700

Patent

active

043114687

ABSTRACT:
The invention relates to a planet projecting system for simulating the motions of planets and in particular for visualizing the rotations and the phase changes of the Earth. The planet projecting system comprises two cylindrical image mounts which rotate independently of each other, the curved surface of one cylindrical mount is provided with an image of the planet, the curved surface of the other cylindrical mount carries an image of clouds. Two illumination systems illuminate the two image mounts and via respective means the images are projected upon the dome of a planetarium. The spheric shape of a planet is effected by a distortion optical system inserted into the projection beam.

REFERENCES:
patent: 3074183 (1963-01-01), Frank
patent: 3382026 (1968-05-01), Schwesinger et al.
patent: 3589035 (1971-06-01), Vickery
patent: 4178701 (1979-12-01), Sadler

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