Message #107823

[Bianca]

Saphaea and Zuraqi



The first astrolabe instruments were used to read the rise of the time of rise of the Sun and fixed stars.

In the 11th century, Arzachel (al-Zarqali) of al-Andalus constructed the first universal astrolabe which, unlike its predecessors, did not depend on the latitude of the observer, and could be used anywhere on the Earth.

This universal astrolabe instrument became known in Europe as the "Saphaea".

Another astrolabe, the Zuraqi is a unique astrolabe invented by al-Sijzi for a heliocentric planetary model in which the Earth is moving rather than the sky.






Linear astrolabe



A famous work by Sharaf al-Dīn al-Tūsī is one in which he describes the linear astrolabe, sometimes called the "staff of al-Tusi", which he invented.






Astrolabic clock



Ibn al-Shatir invented the astrolabic clock in 14th century Syria.