Means and method for determining meridian location and azimuth

Details Means and method for determining meridian location and azimuth Means and method for determining meridian location and azimuth

1974-08-05

1976-09-21

Wilbur, Maynard R.

Optics: measuring and testing

Angle measuring or angular axial alignment

With photodetection remote from measured angle

33268, 250203R, 356141, G01B 1126, G01C 1734

Patent

active

039815889

ABSTRACT:
Stellar events are timed through a lens system and reticle by a photomultiplier tube, times are compared and a difference factor computed, the difference factor is implemented to move the lens system, reticle and photomultiplier until times are equal, verifying the location of a line on the reticle to be on the meridian.

REFERENCES:
patent: 3521071 (1970-07-01), Speller
patent: 3571567 (1971-03-01), Eckermann
patent: 3591260 (1971-07-01), Harrington et al.
patent: 3713740 (1973-01-01), Lillestrand et al.
patent: 3717413 (1973-02-01), Kubo et al.

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