Hemisferium Miniature Eastern Astrolabe - Piece on stand
This planispheric astrolabe was developed after the one made by Diya´al Din Muhammad (Lahore, 1647).
The original piece can be found at the Adler Planetarium & Astronomy Museum in Chicago.
The stars on its rete and all other calculus have been updated to make it functional today. It is set for latitude 22º (Mecca).
Astrolabe, from the Greek, “star searcher”, was introduced to Europe by the Arabs in the early 12th century. It became a vital tool for astronomers, astrologers, and surveyors.
This astronomical computer was used to estimate the time, to measure heights of celestial bodies and geographical accidents, determine the local latitude, estimate the sunrise and sunset time and to draw horoscopes.
The astrolabe's importance not only comes from the early development of astronomy but is also effective for determining latitude on land or calm seas. It was less reliable on the moving deck of a ship in rough seas, so the mariner's astrolabe was developed to solve that problem.
In the 9th century, Muslim astronomers improved the device by introducing angular scales and azimuth lines which added to its beauty.
To use an astrolabe, the moving parts are first set to a specific date and a specific time. Once set, solar system objects are represented (both visible and invisible) in their relative positions on the instrument. The typical astrolabe was not a navigation tool, however. The similarly named 'mariner's' astrolabe was used for this purpose and was used widely in the European Renaissance.
This new astrolabe is made by hand in the same way as astrolabes were over a thousand years ago. However, the map of the sky is up to date for the 21st century.
Attention to detail, historical interest and its beautiful design is brought to life in this elegant astrolabe. It comes complete on a stand with a user manual.
The astrolabe measures 130mm in height, 45mm across, and 5mm thick.
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