Education and demonstration – Science – Astronomy
Patent
1988-11-21
1990-07-03
Apley, Richard J.
Education and demonstration
Science
Astronomy
434284, 434276, 33271, G09B 2704
Patent
active
049386972
ABSTRACT:
A multi-dimensional astral position finding device for facilitating viewing selected sky areas such as constellations in the zodiacal band and elsewhere. A device which in combination with a pre-selected field of view facilitates positioning of the eye of the observer with respect to the north/south axis of the earth, the latitude of the observer's position, and time. The position finding device is pivotally mounted on a sky viewing frame or system, the position of the device being directly affected by gravitational forces, its location precisely determined with respect to the north/south axis of the earth by a compass carried by the device and serving as weight means for enhancing the gravitational effect to actuate positioning of the device, said device including indicia on a surface thereof arranged on radii extending from the axis of the pivotal mounting to facilitate desired inclination of the viewing frame relative to the horizon.
REFERENCES:
patent: 1126231 (1915-01-01), Kullmer
patent: 1150731 (1915-08-01), Barcus
patent: 2337587 (1943-12-01), Brocky
patent: 2754597 (1956-07-01), Sylvester
patent: 2994971 (1961-08-01), Meisenheimer et al.
patent: 4096646 (1978-06-01), Solem
Apley Richard J.
Cheng Joe H.
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