Elementary astronomy; a beginner's text-book (1899)
Holden, Edward Singleton, 1846-1914 · New York, H. Holt and company · leaf 150
Fig. 72.—A Small Transit-instrument. The length of the telescope of this instrument is about two feet. ASTRONOMICAL INSTRUMENTS. 129 is in this way that the transit instrument is employed todetermine the right ascensions of unknown stars. … Fig. 73.—A Meridian-circle.The Meridian-circle.—The meridian-circle (or transit-circle) is a combination of the transit-instrument with a 130 ASTRONOMY. circle (or two circles) fastened to its axis. With thetransit-instrument we can determine the right-ascensioasof stars; with the circle we can…
Astronomy
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