Mariam al-Astrulabi or Al-'Ijliyah bint al-'Ijli al-Asturlabi (Arabic: العجلية بنت العجلي الأسطرلابي), also known as Maeriam al-Ijliya al-Astrulabi, Al-Asturlabiya and Al-'Ijliya, was a 10th-century female astronomer and maker of astrolabes in Aleppo, in what is now northern Syria.
Al-'Ijliyah developed and manufactured astrolabes, an astronomical and navigation instrument, during the 10th century. She was employed by the Emir of Aleppo, Sayf al-Dawla, who reigned from 944 to 967 AD.
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