Elementary astronomy; a beginner's text-book (1899)
Holden, Edward Singleton, 1846-1914 · New York, H. Holt and company · leaf 149
veryinstant. (In practice we do not move the hands but allowfor its errors.) Table V, at the end of the book, gives alist of the R.A. of a number of stars. Now suppose the sidereal clock to be correct and thetimes of transit T\ T2, T*, etc., of stars of unknown right-ascension to be recorded. Then… … 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.
Astronomy
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