Willson, Robert Wheeler, 1853-1922 · Boston, New York Ginn & company · leaf 131
stern time. The reduction for longi-tude for San Francisco is -|-S 9™.7 toGreenwich and -|- 8^ 9.7 — 8 = -f 9.7 toPacific time. Problems, therefore, whichinvolve standard time require a knowledgeof the observers longitude. Problem 5. — To rectify the globe for agiven sidereal time. Eotate the globe… … Fig, 46. Sid. T. 7 50 THE CELESTIAL GLOBE 119 Example 5. To rectify the globe for 1^ 60™ sidereal time, rotatethe globe until R.A.M. is 7 50™ (Fig. 46). Problem 6. — The globe being rectified for a given sidereal time,to determine the hour angle of a body. Note the R.A.M. when the globe is in the…
Astronomy
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