The heavens above: a popular handbook of astronomy (1882)
Gillet, J. A. (Joseph Anthony), 1837-1908 · New York, Chicago, Potter, Ainsworth, & Co. · leaf 31
al circle whichpasses through the north andsouth points of the horizonis called the meridian; andthe one which passes throughthe east and west points, the g iprime vertical. These twocircles are shown in Fig. 15 ;SZN being the meridian,and E ZW the prime verti-cal. These two circles areat right… … ASTRONOMY. 13 zenith distance is its distance from the zenith. Both thealtitude and the zenith distance of a body are measured onthe vertical circle which passes through the body. The alti-tude and zenith distance of a heavenly body are comple-ments of each other. 10. Azimuth and Amplitude.—Azimuth…
Astronomy
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