Ahmad ibn Muhammad al-Nahavandi was a Persian astronomer of the 7th and 8th centuries. His name indicates that he was from Nahavand, a city in Iran. // Events Islam starts in Arabia, the Quran is written, and Syria, Iraq, Persia, North Africa and Central Asia convert to Islam. ... (7th century — 8th century — 9th century — other centuries) Events The Iberian peninsula is taken by Arab and Berber Muslims, thus ending the Visigothic rule, and starting almost 8 centuries of Muslim presence there. ... Nahavand (also spelled Nahawand in some texts) is a town in Hamadan Province in Iran. ...

He lived and worked at the Academy of Gundishapur, in Khuzestan, Iran, at the time of Yahya ibn Khalid ibn Barmak, who died in 803AD, where he is reported to have been making astronomical observations around the year 800AD. He and Mashallah were among the earliest Islamic era astronomers who flourished during the reign of al-Mansur, the second Abbasid Caliph. The Academy of Gundishapur (also Jondishapoor, Jondishapur, and Jondishapour, Gondeshapur etc. ... Map showing Khuzestan in Iran // Introduction Domes like this are quite common in Khuzestan province. ... Events Nicephorus I and Charlemagne settle their imperial boundaries. ... Mashallah ibn Atharī, was an 8th century Persian astronomer. ... This article is about the Abbasid Caliph Al Mansur of Baghdad. ... Abbasid provinces during the caliphate of Harun al-Rashid Abbasid (Arabic: العبّاسدين ) was the dynastic name generally given to the caliphs of Baghdad, the second of the two great Sunni dynasties of the Muslim empire, that overthrew the Umayyid caliphs. ...

He also compiled tables called the comprehensive (Mushtamil).

See also

• List of Iranian scientists

Photo taken from medieval manuscript by Qotbeddin Shirazi. ...

References

• The Golden Age of Persia. By Richard Nelson Frye. p163.
• H. Suter: Die Mathematiker und Astronomen der Araber (l0, 1900)