NASA NTRS · 19690000552
Automatic star-horizon angle measurement system
Abstract
Automatic star horizontal angle measuring aid for general navigational use incorporates an Apollo type sextant. The eyepiece of the sextant is replaced with two light detectors and appropriate circuitry. The device automatically determines the angle between a navigational star and a unique point on the earths horizon as seen on a spacecraft.
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Koerber, K., Koso, D. A., Nardella, P. C.. 1969-11-01. Automatic star-horizon angle measurement system. https://ntrs.nasa.gov/citations/19690000552
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