Editing Celestial globe (section)

=== 13th century ===
In the 13th century, a celestial globe, now housed in the [[Mathematisch-Physikalischer Salon|Mathematisch-Physikalischer]] Salon in [[Dresden]], was produced at one of the most important centres of astronomy in intellectual history, the Ilkhanid observatory at [[Maragheh|Maragha]] in north-western Iran constructed in 1259 and headed by Nasir al-Dln TusT (d. 1274), the renowned polymath.{{sfn|Carey|2009}} This particular scientific instrument was made by the son of the renowned scientist Mu'ayyad al-'Urdi al-Dimashqi, Muhammad b. Mu'ayyad al-'Urdl in 1288. This globe is an interesting example of how celestial globes demonstrate both the scientific and the artistic talents of those who make them. All forty-eight classical constellations used in Ptolemy's Almagest are represented on the globe, meaning it could then be used in calculations for astronomy and astrology, such as navigation, time-keeping or determining a horoscope.{{sfn|Carey|2009|pages=103–104}} Artistically, this globe is an insight into thirteenth century Iranian illustration as the thirteenth century was a period when inlaid brass became a premier medium for figural imagery and so the globes from this period are duly exceptional for the detail and clarity of their engraved figures.{{sfn|Carey|2009}}