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Gian Domenico Cassini

Theoriae motus cometae anni MDCLXIV..., Roma 1665

In costruzione, contributo di Gian Domenico Cassini sulla cometa del 1664-1665

Gian Domenico Cassini

Theoriae motus cometae anni MDCLXIV pars prima Ea præferens, quæ ex primis observationibus ad futurorum motuum prænotionem deduci potuere, Cum nova investigationis methodo, tum in eodem, Tum in comete novissimo anni MDCLXV ad praxim revocata. Auctore Ioanne Dominico Cassino Bononiensis Archygymnasii astronomo

Romae M.DC.LXV.

Ex Typographia Fabii de Falco

Rome: Fabio di Falco, 1665. First editions of exceptionally rare Cassini publication on the comet of 1664-5. Cassini observed the comet "in the presence of Queen Christina [to whom the first work is dedicated] and formulated on this occasion a new theory (in agreement with the Tychonian system) in which the orbit of the comet is a great circle whose center is situated in the direction of Sirius and whose perigee is beyond the orbit of Saturn." (DSB). Cassini's detailed observations of the comet were made with a powerful new telescope. "Through his friendship with the famous Roman lensmakers Giuseppe Campani and Eustachio Divini, Cassini, beginning in 1664, was able to obtain from them powerful celestial telescopes of great focal length. He used these instruments—very delicate and extremely accurate for the time— with great skill, and made within several years a remarkable series of observations..." (ibid). In the preface to the work Cassini describes the telescopes, and the first observations made with them. The large engraved plate depicts the course of the comet in the southern celestial hemisphere from December 13 1664 through the middle of January of 1665. It also shows the appearance and direction of the comet';s tail in a series of nightly dated observations. The great comet of 1664-5 was observed my many astronomers, including Auzout, Borelli, Fabri, Hooke, Hevelius, and Petit.

Testo e tavola di

Sophia Rare Books
Flæsketorvet 68, 1.
Copenhagen, 1711

PARS HEMISPHERII AUSTRALIS

La cometa nel cielo del dicembre 1664

La cometa nel gennaio 1665

Costellazioni non tolemaiche

Su Cassini esamina

L'astronome du roi et le satellite

Image en noir et blanc pour la rubrique exposition

http://expositions.obspm.fr/cassini/index.php

Il percorso della cometa del 1664-1665

per cortesia di

Museo Galileo di Firenze

Confronta con

Johannes Hevelius

Cursus Cometae anno 1664 et 1665 a die 14 decemb. ad diem 18 febr., Gedani, observatus, delineatus, aerique incisus, a Iohanne Hevelio. Gedani 1665.

http://www.atlascoelestis.com/Hevel%201664Pagina.htm

Anonimo

Kurzverfasster historischer Bericht, aller derjenigen Cometen, so innerhalb hundert Jahren, das ist: vom Jahr 1566. bis auff das jezige 1664. Jahr, sonderlich den 18. Decem. St. N. zu Augspurg, und dann ferner zu Nürnberg, Straßburg, Hamburg, Lübeck, Leipzig und anderer Orten ist erschienen, samt dero darauf erfolgeten Würckungen

http://www.atlascoelestis.com/anonimo%20dic%201664%20base.htm

Johann Matthias Schneuber

Umständliche Beschreibung deß grossen Cometen, welcher im Anfang dess Christmonats 1664 erschienen und biss zu end deß Jenners 1665 gestanden; samt beigefügter Abbildung dess gantzen Lauffs, und beiläuffiger Bedeutung in underschidliche Kurzgedichte verfaßt, Strassburg 1665.

http://www.atlascoelestis.com/Schneiber%201665%20base.htm

Anonimo

Nürnbergische Observation deß neuen Cometens, das ist: Kurtze historische Erzehlung des im nechsten Monat Decembris vergangenen 1664 Jahrs, erschienen erschröcklichen Comet-Sterns wunderbaren weiten Lauffs, Veränderung und Ende ... Johann Andreas Endter und Wolffgang Endters dess Jüngern, Nürnberg 1665

http://www.atlascoelestis.com/Rara%20N9645%201665%20base.htm

e con

John Ray and Samuel Dale

Observations Made at Rome, by the Late Reverend Mr. John Ray, of the Comet Which Appeared Anno 1664. Communicated to the Publisher by Mr. Samuel Dale. In Philosophical Transactions, London 1706

http://www.atlascoelestis.com/Ray%201706%20base.htm

Confronta con

Theatrum Cometicum di Lubienietzki

e con

Gianfrancesco Castagnola

Observationes In Meridiano Genuae E' Coelo Inter Fixas Motus Cometae Noctibus Subsequentibus Signatis Diebus, Deductae a Io: Francisco Castagnola Q. Pauli Aemilii Q. Hieronymi Ligure, Genova 1665