Elementary astronomy; a beginner's text-book (1899)
Holden, Edward Singleton, 1846-1914 · New York, H. Holt and company · leaf 98
observing the real stars in the sky, theglobe will help him to understand quickly, in a few min-utes, motions that the real stars require 24 hours to make.Other problems can be, and should be, studied in the sameway. CHAPTER V. CO-ORDINATES-SIDEREAL AND SOLAR TIME. 14. Systems of Co-ordinates to… … Fig. 45.—Systems of Co-ordinates on the Celestial Sphere. Any great circles of the celestial sphere which passthrough the two celestial poles are called how-circles.Each hour-circle is the celestial meridian of some place onthe Earth. 77 78 ASTRONOMY. The hoar-circle of any particular star is that…
Astronomy
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