Figure 1: Taqī al-Dīn's observational clock is shown in the right hand side middle of this famous picture of Istanbul observatiry. Source: Istanbul University Library, MS F1404, folio 57a.
The Astronomical Clock of Taqi Al-Din: Virtual ReconstructionLEARN MORE
In his book The Brightest Stars for the Construction of Mechanical Clocks (Al-Kawakib al-durriyya fi wadh' al...
The Observation WellLEARN MORE
Observation wells received much historical interest relating to observatories. In this article Prof. Aydin...
Figure 1: The determination of the prayer times according to the positions of the sun.
Principle and Use of Ottoman SundialsLEARN MORE
Muslim astronomers and engineers invented a variety of dials for timekeeping and for determining the times of...
Figure 1: Brass celestial globe, made in Mosul by Muhammad ibn Hilâl in 674 H / 1275-76 CE; preserved at the British Museum. (Source).
Our Arab Heritage in the Celestial VaultLEARN MORE
In Arabic culture, as in other civilisations, the cultural dimension of the history of astronomy appears in...
Figure 1: Eclipse diagram for Greenwich Mean Time, February 21, 2008 (Source).
Arabic Eclipse Records Bring Light to Scientific Analysis of the Earth's RotationLEARN MORE
A total eclipse of the Moon occurs during the night of Wednesday, February 20/21, 2008. The entire event is...
Figure 1: An armillary sphere in Ma'rifatname of Ibrahim Hakki Erzurumi. Adapted from the original manuscript held in the Suleymaniye Library in Istanbul, Haci Mahmud collection, MS 5616, fol. 1b.
The Armillary Sphere: A Concentrate of Knowledge in Islamic AstronomyLEARN MORE
The armillary sphere is an ancient astronomical instrument reproducing a model of the celestial sphere. In...