Elementary astronomy; a beginner's text-book (1899)
Holden, Edward Singleton, 1846-1914 · New York, H. Holt and company · leaf 110
is 6 hours. the sidereal time at that instant). If the star Fomalhaut is on thecelestial meridian of an observer at another instant, the sidereal timeat that instant must be 22h 52ra, and so on. The sidereal clock mustshow on its dial 61 41m when Sirius is on the meridian ; and it mustshow 22h 52m… … Fig. 52. The hour-angle of the vernal equinox in this figure is 17 hours. Thesidereal time is therefore 17 hours. The R.A. of the observers meridianis 17 hours. 90 ASTRONOMY. Monday they must point to 6h 41m. When Sirius comes to the merid-ian on Tuesday they must again mark 61 41m. And it is just…
Astronomy
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