Arabian Maghribi astrolabe, 18th century.
4 0 c m
actual image size: 25cm x 32cm

Arabian Maghribi astrolabe, 18th century.

© Science Museum / Science & Society Picture Library


An astrolabe is in esence a model of the universe that an astronomer could hold in their hands. From its origins in the Ancient World, Islamic astronomers developed the astrolabe and its use spread. Popular in Medieval and Renaisance Europe, its many uses included timekeeping, astrology and surveying. The two-dimensional depiction of the heavens used on this instrument is achieved using the mathematical technique of stereographic projection. This front view shows the very ornate moveable fretwork plate, called the 'rete', which denotes star positions by short curved pointers.

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