A high-school astronomy: in which the descriptive, physical, and practical are combined .. (1859)
Mattison, Hiram, 1811-1868 · New York, Mason brothers · leaf 31
r extended both ways to the concave surface ofthe heavens. The Equator of theheavens, or Equinoc-tial, is the plane ofthe Earths equatorextended to the starryheavens. Declination is dis-stance either north orsouth of the Equinoc-tial. Declination is to the heavensprecisely what latitude is uponthe… … Right Ascension is distance east of a given point, andis reckoned on the Equinoctial quite around the heavens. In one respect, Eight Ascension in the heavens is like longitude on the earth:they are both reckoned upon the equators of their respective spheres. But whilelongitude is reckoned both east…
Astronomy
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
