Johann Baptist Cysat
Johann Baptist Cysat ( Latinized Johannes Baptista Cysatus ; * 1586 or March 12, 1587 in Lucerne ; † March 3, 1657 ibid) was a Swiss mathematician and astronomer.
Johann Baptist Cysat discovered new, physically related binary star systems in 1619 .
Life
Cysat was born as the son of the Lucerne town clerk Renward Cysat . He joined the order of the Jesuits in 1604 . At the University of Ingolstadt , he studied mathematics and astronomy with Christoph Scheiner . He was initially his employee and followed him in 1618 as a professor of mathematics. In 1622 he left Ingolstadt and returned to his homeland. From 1624 to 1627 he was rector of the Jesuit College of Lucerne . After living in Spain for a while, he became rector of the University of Innsbruck in 1637 and rector of the Collegium Willibaldinum in Eichstätt in 1646 . Finally he took over the rectorate of the college of his native Lucerne.
Johann Baptist Cysat made telescopes and observed the comet of 1618 . He was one of the first to describe the sunspots and the Orion Nebula . The astronomer Giovanni Riccioli named the lunar crater Cysatus after him .
swell
- Rudolf Wolf: Biographies on the cultural history of Switzerland. First cycle . Orell, Füssli & Comp., Zurich 1858, pp. 105-118 (online) .
- J [ohann] C [hristian] Poggendorff : Biographical-literary concise dictionary for the history of exact sciences , first volume, p. 508 (online at Google Books) .
- Ernst Zinner : Cysat, Johann Baptist. In: New German Biography (NDB). Volume 3, Duncker & Humblot, Berlin 1957, ISBN 3-428-00184-2 , p. 455 ( digitized version ).
- Hanspeter Marti: Cysat, Johann Baptist. In: Historical Lexicon of Switzerland .
Web links
Individual evidence
- ^ Rita Haub : Sun, Moon and Stars. Jesuits as discoverers (= Topos-plus-Taschenbücher, Volume 642), Kevelaer 2008, ISBN 978-3-8367-0642-1 . ( limited preview in Google Book search)
personal data | |
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SURNAME | Cysat, Johann Baptist |
ALTERNATIVE NAMES | Cysatus, Johannes Baptista (full name) |
BRIEF DESCRIPTION | Swiss mathematician and astronomer |
DATE OF BIRTH | 1586 or March 12, 1587 |
PLACE OF BIRTH | Lucerne |
DATE OF DEATH | March 3, 1657 |
Place of death | Lucerne |