File:Celatone (ricostruzione) IF 102793.jpg
_IF_102793.jpg){kind=link}
Using of celatone.
File:Celatone01.jpg
Celatone by Matthew Dockrey. Museum at the Royal Observatory, Greenwich, UK.
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 versionsEdit
In 2013, Matthew Dockrey created a replica celatone, using notes from a version created by Samuel Parlour. From April 2014 to January 2015, Dockrey's celatone was on display in the Royal Observatory, Greenwich in east London.
See alsoEdit
ReferencesEdit
External linksEdit
- Video animation of a Celatone and its use in discovering the longitude for marine navigation
- Dockrey celatone
- "Apparatus to render a telescope manageable on shipboard"
Template:Galileo Galilei Template:Portal bar Template:Authority control