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Galileo and his Telescope. Practical Optics and Cosmology. Albert Van Helden Rice University University of Utrecht. The telescope was invented by children playing with lenses?. Hans Lipperhey’s patent application Oktober 1608. Jacob Metius of Alkmaar. And then there was also
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Galileo and his Telescope Practical Optics and Cosmology Albert Van Helden Rice University University of Utrecht
The telescope was invented by children playing with lenses? . . . . .
Hans Lipperhey’s patent application Oktober 1608
And then there was also Sacharias Jansen
Giovanni Battista della Porta 1535-1615 Concave lenticulars show things clearer but smaller. Convex lenticulars show things larger but fuzzy. If you know how to put the two together, you will be able to help near-sighted as well as far-sighted people. Magia Naturalis, 1589
Gio. Battista Della Porta to Federico Cesi28 augustus 1609“e una coglionaria et e preso dal mio libro 9 De refractione”
Italian SpyglassFirst half of the 17th centurylength 21 cm, magnification 4×courtesy of R. Willach
French telescope, ca. 1620length 63 cm, magnification 14×courtesy of R. Willach
1610 1616 Il saggiatore, 1623