Newcomb, Simon, 1835-1909, Holden, Edward Singleton, 1846-1914, joint author · New York : H. Holt and company · leaf 105
edto the iJole, the reading will change by the angular distancebetween the nadir and the pole, or by 90° + <p, (f> beingthe latitude of the place (supposed to be known). Thepolar reading P is thus known when the nadir readingi\7is found. If the telescope is then pointed to variousstars of… … Fig. 35.—the mertdiatt cibci.b. THE MERIDIAN CIRCLE. 85 To determine tlie readingj P, P, P, etc., we use the micro-scopes R, R, etc. The observer, after haviug set the telescope sothat one of the stars shall cross tlie field of view exactly at its cen-tre (whicli may be liere marked by a single…
Astronomy
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