Sharpless, Isaac, 1848-1920, Philips, G. M. (George Morris), 1851-1920, joint author · Philadelphia, J.B. Lippincott company · leaf 296
ach other: one of these is pointeddirectly towards the pole of the heavens, and is calledthe polar axis ; the other is attached to this at one end,and is called the declination axis. The telescope turnson the declination axis, and with it around the polaraxis: hence it can be pointed to any part of… … >>;*> mi Fig. 8u.—Equatokial Refracting Telescope. will follow the star from rising to setting. This turn-ing can be done by clock-work so regulated as to move 292 ASTRONOMY.
Astronomy
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