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L'astrolabe de la cathédrale Saint-Jean à Lyon (69)

L'astrolabe de la cathédrale Saint-Jean à Lyon (69)

Astrolabe-bronze les Arabes inventèrent des instruments d'astronomie

Astrolabe-bronze les Arabes inventèrent des instruments d'astronomie

L'astrolabe de la cathédrale Saint-Jean à Lyon (69)

L'astrolabe de la cathédrale Saint-Jean à Lyon (69)

epigothica:  Sumerian Star Chart  Sky Map of Ancient Nineveh 3300 BC A reproduction of a Sumerian star map or “planisphere” recovered from t...

epigothica: Sumerian Star Chart Sky Map of Ancient Nineveh 3300 BC A reproduction of a Sumerian star map or “planisphere” recovered from t...

Astrolabe - Mesurer le Ciel et la Terre

Astrolabe - Mesurer le Ciel et la Terre

Nurnberg diptych sundial from 1600s capable of operating between 42 and 54 degrees of latitude. The brass insert is a mystery: Possibly an annalematic sundial to allow orientation without compass. Currently in Louvre.

Nurnberg diptych sundial from 1600s capable of operating between 42 and 54 degrees of latitude. The brass insert is a mystery: Possibly an annalematic sundial to allow orientation without compass. Currently in Louvre.

Astrolabe planisphérique par CARL-GEORG ARSENIUS - Musée national de la Renaissance (Ecouen)

Astrolabe planisphérique par CARL-GEORG ARSENIUS - Musée national de la Renaissance (Ecouen)

Astrolabe - Mesurer le Ciel et la Terre

Astrolabe - Mesurer le Ciel et la Terre

Necessary astronomical - Astronomy Kit / Buschmann Caspar (1563-1629) clockmaker / Ecouen, National Museum of the Renaissance

Necessary astronomical - Astronomy Kit / Buschmann Caspar (1563-1629) clockmaker / Ecouen, National Museum of the Renaissance

Equinoxial en bronze et laiton signé CHAPOTOT à Paris.  Epoque fin

Equinoxial en bronze et laiton signé CHAPOTOT à Paris. Epoque fin

Nocturnal, Italy, 17th century. A nocturnal is an instrument used to determine the local time based on the relative positions of two or more stars in the night sky.

Nocturnal, Italy, 17th century. A nocturnal is an instrument used to determine the local time based on the relative positions of two or more stars in the night sky.