Astronomical data indicating device

Details Astronomical data indicating device Astronomical data indicating device

1992-04-30

1993-05-04

Roskoski, Bernard

Horology: time measuring systems or devices

Astronomical

368223, 368229, G04B 1926

Patent

active

052087905

ABSTRACT:
An astronomical data indicating device is provided with a memory for storing location data representing a location on the earth. In the present device, before calculation of astronomical data such as hour angle data of moon and moon phase data, at first hour angle data and moon phase data for Greenwich Mean Time are calculated regardless of the place where the present device is used, and then hour angle data and moon phase data at the place where the present device is used are calculated. Therefore, the calculation process is performed in a very simple manner.

REFERENCES:
patent: 4253169 (1981-02-01), Salah
patent: 4479722 (1984-10-01), Salah
patent: 4548512 (1985-10-01), Erard
patent: 4659231 (1987-04-01), Barkouki
patent: 4681459 (1987-07-01), Nabeyama et al.
patent: 4684260 (1987-08-01), Jackle
patent: 4692031 (1987-09-01), Kaneko et al.

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