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 377
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… … TYPICAL GREAT TELESCOPE OF THE I7TH CENTURY{Built and used by Hevelius at Dantzig) In the telescopes of Galileo and Huygens and alltheir followers for about a century, the image of aremote object was formed by a single lens of doubleconvexity. The glass was full of imperfections; butbesides this,…
Astronomy
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