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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
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on Earth. It took the form of a piece of headgear with a telescope taking the place of an eyehole.
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Longitude: The True Story of a Lone Genius Who Solved the
Greatest Scientific Problem of His Time
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Video animation of a
Celatone and its use in discovering the longitude for marine navigation
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Celatone by
Matthew Dockrey. Museum at the Royal Observatory, Greenwich, UK.
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Galileo's
Daughter: A Historical Memoir of Science, Faith, and Love
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Navigational aid reliant on tracking
Jupiter's moons in the sky
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131:"Apparatus to render a telescope manageable on shipboard"
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297:The Assayer
246:(1589–1592)
226:Thermoscope
99:. Penguin.
91:Sobel, Dava
43:to observe
428:spacecraft
357:(mistress)
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84:References
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339:(brother)
49:longitude
607:Category
333:(father)
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221:Celatone
93:(1995).
67:See also
37:celatone
535:Portals
488:Galileo
480:Galileo
365:Related
389:Sector
324:Family
316:(1638)
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101:ISBN
35:The
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.