Young, Charles A. (Charles Augustus), 1834-1908, Young, Anne Sewell, b. 1871., ed · Boston, New York [etc.] Ginn and Company · leaf 26
me Vertical.— Vertical Circles are great circles drawn from the zenith at rightangles to the horizon. Their number is indefinite : each starhas at any moment its own vertical circle. That particularvertical circle which passes north and south is known as theCelestial Meridian, and is evidently the… … Fig. 4. — The Horizon and Vertical Circles. O, the place of the Observer.OZ, the Observers Vertical.Z, the Zenith; P, the Pole.SENW, the Horizon.SZPN, the Meridian.EZW, the Prime Vertical. M, some Star. ZMH, arc of the Stars Vertical Circle. TMR, the Stars Almucantar. Angle TZM, or arc SH, Stars…
Astronomy · Constellations
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