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Astrolabe rete

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made in Cordoba, Spain

Astrolabe rete
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A rete is the skeletal plate that fits into an astrolabe on top of the selected latitude plate, and is freely rotatable over it. This brass rete is from an astrolabe dating from 1026, the earliest surviving signed and dated astrolabe made in Europe.

Both plate and rete have the north celestial pole in the centre and the edge is bounded by the Tropic of Capricorn. The pointers mark the brightest 'fixed' stars.

The rete is a replacement, probably of the 13th century.

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