Jan Hevelius (Hevelius Johannes)( Polish astronomer.)
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Biography Jan Hevelius (Hevelius Johannes)
Born January 28, 1611 in Gdansk in the family of the merchant. Astronomy was carried away in his youth. Studied law in Holland, England and France, visited Prague, where he familiarized himself with the observatory of Tycho Brahe. In 1639, after the death of his father, returned to Gdansk. He continued his father's business, all profits from it spent on astronomy classes. In 1641 he built in his home observatory, he made the tools and spent many observations. Together with his wife Elzbieta drew a map of the moon, distinguished by great accuracy, has published her book selenography (Selenographia, 1647). In 1661 saw the passage of Mercury across the solar disk. A catalog of 1564 stars, in the Kometografiya (Cometographia, 1668) gave the first systematic description and outlined the history of all of the observed to the time of comets, he discovered four comets. Became a member of the Royal Society of London. Even after the death of the scientist came out he had prepared star catalog and atlas of the sky. The catalog contains the results of observations of the 1564 stars visible above the horizon in Gdansk, but atlas described 11 new constellations (the names of some of them survived until our days).
Died Hevelius in Gdansk, January 28, 1687.