Astronomy for the use of schools and academies (1882)
Gillet, J. A. (Joseph Anthony), 1837-1908, Rolfe, W. J. (William James), 1827-1910 · New York : Potter, Ainsworth, & Co. · leaf 36
Fig. 22. fixed in any declination, and then t The equato?ial tele-scope is mounted ontwo axes, — one par-allel with the axis ofthe earth, and theother at right anglesto this, and thereforeparallel with the planeof the earths equator.The former is calledthe polar axis, andthe latter the declina-tion…
Astronomy
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