Carolingian Astrolabe (10th century?)


Brass, diameter 100 mm, weight c. 250 grams
CHF 800.00, EUR 696.00

Carolingian Astrolabe (10th century?)

Reconstruction (smaller in scale) of the oldest European astrolabe, described by Marcel Destombes, 1962. Original instrument (diameter 150 mm) at the Institut du Monde Arabe, Paris. Rete with 20 very approximate star-pointers, in contrast to the accurate engravings of the astrolabe. Reconstruction with corrected star-pointers (for the 10th century), but without disturbing the shape of the rete in respect to the original instrument. There are no star-names. Two plates for lat. 36°, 39°, 41.5° (Roma et Francia), 47.5°, with 6°-almucantars, partly 10°-azimuths, and unequal hours. In some places we find letter-numerals (as in Greek and Arabian culture): A = 1, B = 2, C = 3 etc. Back with 360°-division, ecliptic/calendar-circles and shadow-square.
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