Astrolabes /
Browse / 49033
Date | ca. 1250 |
Place | Spain (?) |
Material | Brass |
Inventory no. | 49033 |
Acquisition | Presented by Lewis Evans in 1924 |
Though not signed or dated, this is understood to be the earliest Western astrolabe in the Oxford collection. The design of the rete has been influenced by Muslim precedents and the astrolabe may have been made in Spain.
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detailed provenance for this astrolabe
Mater
The mater and limb are of two pieces, riveted construction. The notch for the tabs on the plates is at the throne. Scales on the limb: degree scale. More informationBack
The scales on the back have not been completed. The shadow square is not labeled or numbered, and the calendrical table (based on the 28-year solar cycle) has not been completed. The back contains 4 scales of the following types: Zodiacal signs; Calendar; Shadow square; Solar cycle. More informationRete, Pin & Horse
The rete contains 21 stars. The zodiac on the rete is labelled: ARIES , TAVR9 , GEMI , CANC' , LEO , VIRGO , LIBRA , SCORPIVS , SAGITT , CAPRIC , AQVARI9 , PISCES .The rete is attached using a pin & horse. More information
Rules & Alidades
Type | Details |
---|---|
Alidade | Double-ended, counter-changed. Both tips have broken
off. There is an usual and seemingly useless notch on the
bottom of each sighting vane. |