[Coffin, John Huntington Crane], 1815-1890. [from old catalog] · New York, D. Van Nostrand · leaf 127
romthe mean local time, instead of the apparent (Art. 105). 127. Problem: 40. To find the azimuth of a heavenlybody from its observed altitude at a given place. Solution. In this the Greenwich time of the observationmust be known sufficiently near for finding the declination of the body. The… … COS B a- sin a sin c For the triangle P Z M, ALTITUDE AND AZIMUTH. 121 B = Z, a — 90° —h, A being the true altitude,b — p, the polar distance, c = 90°—X, the co-latitude,5= 90o-i (i+A-p),5-6= 90°—J- (Z + A+p), and the formula becomes cos^Z— yt fcos \ (L + h+27) cos | (Z+^ — p)cos Z cos A -P) or, if…
Navigation · Nautical astronomy
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