Ahmad ibn Muhammad al-Nahawandi ( fa, احمد نهاوندى), also called Al-Nahawandi, was a

Persia Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkmeni ...

astronomer An astronomer is a scientist in the field of astronomy who focuses their studies on a specific question or field outside the scope of Earth. They observe astronomical objects such as stars, planets, moons, comets and galaxies – in either ...

of the 8th and 9th centuries. His name indicates that he was from

Nahavand Nahavand ( fa, نهاوند, translit=Nahāvand / Nehāvend) is a city in Hamadan Province, Iran. It is the capital of Nahavand County. At the time of the 2006 census, its population was 72,218, in 19,419 families. It is located south of the ci ...

, now in modern Iran. Al-Nahawandi lived and worked at the

Academy of Gundishapur The Academy of Gondishapur ( fa, فرهنگستان گندی‌شاپور, Farhangestân-e Gondišâpur), also known as the Gondishapur University (دانشگاه گندی‌شاپور Dânešgâh-e Gondišapur), was one of the three Sasanian ...

, in Khuzestan, Iran, at the time of Yahya ibn Khalid ibn Barmak, who died in 803, where he is reported to have been making astronomical observations in around 800. He and the astronomer and

mathematician A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, structure, space, models, and change. History On ...

Mashallah ibn Athari ''Mashallah'' ( ar, مَا شَاءَ ٱللَّٰهُ, '), also written Masha'Allah, Maşallah (Turkey and Azerbaijan), Masya Allah (Malaysia and Indonesia), Maschallah (Germany), and Mašallah (Bosnia), is an Arabic phrase that is used to expres ...

were among the earliest Islamic era astronomers who flourished during the reign of

al-Mansur Abū Jaʿfar ʿAbd Allāh ibn Muḥammad al-Manṣūr (; ar, أبو جعفر عبد الله بن محمد المنصور‎; 95 AH – 158 AH/714 CE – 6 October 775 CE) usually known simply as by his laqab Al-Manṣūr (المنصور) w ...

, the second

Abbasid The Abbasid Caliphate ( or ; ar, الْخِلَافَةُ الْعَبَّاسِيَّة, ') was the third caliphate to succeed the Islamic prophet Muhammad. It was founded by a dynasty descended from Muhammad's uncle, Abbas ibn Abdul-Muttalib ...

caliph. Al-Nahawandi compiled astronomical tables under the title .

References

Sources

* *

References

Sources

Further reading