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Galileo Galilei almost certainly began telescopic sunspot observations around the same time as Harriot, given he made his first telescope in 1609 on hearing of the Dutch patent of the device, and that he had managed previously to make naked-eye observations of sunspots. He is also reported to have shown sunspots to astronomers in Rome, but we ...
Sunspots were first observed telescopically in ... Galileo likely began telescopic sunspot observations around the ... starting with the observations made in the ...
The sunspot activity of December 1610 was the first to be observed using the newly invented telescope, by Thomas Harriot, who sketched what he saw but did not publish it. [12] In 1611 Johannes Fabricius saw them, and published a pamphlet entitled De Maculis in Sole Observatis , which Galileo was not aware of before he wrote the Letters on Sunspots.
German astronomer Johannes Kepler made sketches of sunspots in 1607 from his observations of the sun’s surface — and centuries later, the pioneering drawings are helping scientists solve a ...
Galileo made studies of sunspots, [67] the Milky Way, and made various observations about stars, including how to measure their apparent size without a telescope. [ 76 ] [ 77 ] [ 78 ] He coined the term Aurora Borealis in 1619 from the Roman goddess of the dawn and the Greek name for the north wind, to describe lights in the northern and ...
Soon after, in 1609 and 1610 respectively, Harriot turned his attention towards the physical aspects of the Moon and his observations of the first sightings of sunspots. [4] In early 1609, he bought a "Dutch trunke" (telescope), invented in 1608, and his observations were among the first uses of a telescope for astronomy.
German astronomer Johannes Kepler used a projecting device in 1607 to help him sketch the sunspots he saw just a few years before the first telescopic observations of the features.
Johannes first observed a sunspot on February 27, 1611; in Wittenberg in that year he published the results of his observations in his 22-page pamphlet De Maculis in Sole observatis..... [5] It was the first publication on the topic of sunspots. [6]