Celatone
_IF_102793.jpg)
The celatone was a device invented by Galileo Galilei to observe Jupiter's moons with the purpose of finding longitude on Earth. It took the form of a piece of headgear with a telescope taking the place of an eyehole.
Modern versions
[edit]In 2013, Matthew Dockrey created a replica celatone, using notes from a version created by Samuel Parlour.[1] From April 2014 to January 2015, Dockrey's celatone was on display in the Royal Observatory, Greenwich in east London.[1]
See also
[edit]References
[edit]- ^ a b Benson, Julian (2014-02-22). "The Celatone: Galileo's Forgotten Failure". Medium. Retrieved 2025-07-04.
- Sobel, Dava (1995). Longitude: The True Story of a Lone Genius Who Solved the Greatest Scientific Problem of His Time. Penguin. ISBN 0-14-025879-5.
