Young, Charles A. (Charles Augustus), 1834-1908, Young, Anne Sewell, b. 1871., ed · Boston, New York [etc.] Ginn and Company · leaf 32
f the earthsequator see only the north pole,and vice versa for observers inthe southern hemisphere. 27. The Celestial Equator, orEquinoctial.— This is a greatcircle of the celestial sphere,drawn half-way between the poles(therefore everywhere 90° fromeach of them), and is the great circle in ivhich… … Fig. 6. — The Plane of the Earths Equator produced to cut the Celestial Sphere. The equator cuts the horizon at the east and west points, but itdoes not cut it perpendicularly nor pass through the zenith unless the Pole-star (at present) is about \\° distant from the pole. If we draw animaginary…
Astronomy · Constellations
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