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Period
Late Gothic
Date
1462
Collection
The Metropolitan Museum of Art
Object no.
923639

Astrolabe

Regiomontanus (Johannes Müller), 1462

Small brass astrolabe with an openwork star map on its face and engraved scales around the rim

The Metropolitan Museum of Art · The Cloisters Collection, 2025 · Public domain

The record

Maker
Regiomontanus (Johannes Müller)
Date
1462
Medium
Copper alloy
Dimensions
H. 13.5 cm (with ring); depth 0.4 cm
Period
Late Gothic

Why it matters

An astrolabe is a flat model of the heavens that allowed its user to tell the time, survey and make astronomical calculations. This example carries an openwork star map on its face and an engraved angel on its reverse, and its inscription names the patron, Cardinal Bessarion, and the maker, John, thought to be the astronomer Regiomontanus. It records a meeting of Greek learning brought west from Byzantium with the new mathematical astronomy of the German lands.