| Reference number | EL/C1/52 |
| Level | Item |
| Title | Letter, from Jean Dominique Cassini to Henry Oldenburg, dated at Paris |
| Creator | Cassini; Jean Dominique (1625-1712); Italian/French mathematician; astronomer; engineer; astrologer |
| Date | 20 August 1671 |
| Description | Cassini says that he sends a copy of his observations of the sunspots, then gives details of his observations of Saturn, and informs Oldenburg that Monsieur Picard was going to Tycho Brahe's observatory on the island of Hven in the Danish Sound to observe the lunar eclipse and the difference between the meridians and the height of the Pole
Read to the Royal Society on 2 November 1671 |
| Language | Latin |
| Extent | 2p |
| Format | Manuscript |
| Place origin | Paris, le-de-France, France |
| Origin coordinates | 48.85341, 2.3488 |
| Digital images | View item on Science in the Making |
| Access status | Open |
| Related material | Transcribed in LBO/4/352, LBC/4/467
Transcribed and translated in 'The correspondence of Henry Oldenburg', ed and trans by A Rupert Hall and Marie Boas Hall, vol 8, p 193
For Cassini's paper on the sunspots see 'Philosophical Transactions', vol 6, no 75, pp 2250-2253 |
| URL description | Also available on Early Modern Letters Online |
| URL | http://emlo.bodleian.ox.ac.uk/profile/work/232f80c6-25a0-4f3c-acc9-264ed2c4b280 |
Fellows associated with this archive
| Code | Name | Dates |
| NA8001 | Oldenburg; Henry (c1619 - 1677); scientific correspondent | c1619 - 1677 |
| NA8383 | Cassini; Jean Dominique (1625 - 1712); astronomer | 1625 - 1712 |