Uttmark's guide to the United States local inspectors examination for masters and mates of ocean going steam and sailing ships (1919)
Uttmark, Fritz E · [New York] The Author · leaf 37
declination ofthe body is of opposite name. Fig. 22. but 90° minus declination if of same name. P is the elevated Pole. P S is the Polar Distance of S. (Fig. 22.) 25.—*What is Declination? The Declination of a celestial body is the an-gular distance from theP equinoctial, measured upon the… … DEFINITIONS 26.—*What is Right Ascension? The Right Ascension of a celestial body is theangle at the Pole between thehour circle of the body andthat of the first point ofAries. It is measured fromthe first point of Aries East-ward extending up to 360° or24 hours. P is the Pole. A is the first point…
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