Newcomb, Simon, 1835-1909, Holden, Edward Singleton, 1846-1914, joint author · New York : H. Holt and company · leaf 64
right ascension only in. the pointfrom which it is reckoned, and tlie direction which is consideredpositive. The right ascension is measured toward the east from apoint (the vernal equinox) which is fixed among the stars, while thehour angle is measured toward the west from the meridian of… … Fig. 14 Fig. 14 be a view of the celestial hemisphere which is above thehorizon, as seen from the east. We then have : HE R W, the horizon. P, the pole. Z, the zenith of the observer. H M Z P R, the meridian of the observer. P B, the latitude of the observer, which call 0. Z P, = 90° — (p, the…
Astronomy
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