Young, Charles A. (Charles Augustus), 1834-1908, Young, Anne Sewell, b. 1871., ed · Boston, New York [etc.] Ginn and Company · leaf 34
0 DECLINATION AND POLAR DISTANCE. [§30 By means of the hour-circles and the celestial equator wenow have a second method of designating the position of anobject in the heavens: for Altitude and Azimuth we can sub-stitute Declination and Hour-Angle. 31. Declination and Polar Distance. — The… … Pig. 7. —Hour-Circles, etc. O, place of the Observer; Z, his Zenith. SENW, the Horizon. POP, line parallel to the Axis of the Earth. P and P, the two Poles of the Heavens. EQ WT, the Celestial Equator, or Equinoc-tial. X, the Vernal Equinox, or First ofAries. PXP, the Equinoctial Colure, or…
Astronomy · Constellations
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
