[Coffin, John Huntington Crane], 1815-1890. [from old catalog] · New York, D. Van Nostrand · leaf 73
nautical problems except the com-plete reduction of lunar distances.For these and the more refined ob-servations at observatories, the spher-oidal form of the earth must be con-sidered. Then, as in Fig. 18, theradius C A does not coincide withthe normal or vertical line C A Z,but meets the… … Fig 18. PARALLAX. 67 ACE, the angle which the radius makes with the equator,is its geocentric latitude. 56. Problem 18. To find the parallax of a heavenly bodyfor a given altitude. Solution, In Fig. 17, letp = S, the parallax in altitude ; z — Z A S, the apparent zenith distance of S, corrected…
Navigation · Nautical astronomy
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