Stars and telescopes; a hand-book of popular astronomy, founded on the 9th ed. of Lynn's Celestial motions (1899)
Todd, David P. (David Peck), 1855-1939, Lynn, William Thynne, 1835-1911. Celestial motions · Boston, Little, Brown and company · leaf 376
definiteness ofalignment. Al-though R OMER(page 45) had invented the transit instrument, Pic-ards invention produced the meridian circle, a mod-ern type of which is shown on page 368 ; with it maybe found the exact place of any heavenly body onthe celestial vault with the utmost ease and… … christian huygexs (1629-1695) 3i8 Stars and Telescopes was a delay of nearly a half century, for it was not till1657 that Huygens, famous for his great telescopesand the observations made with them (especially ofthe planet Saturn), constructed an accurate time-pieceby controlling its train with a…
Astronomy
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