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Ibn as-Saffar

Spanish-Arab astronomer in Al-Andalus

Abu al‐Qasim Ahmad ibn Abd Allah ibn Umar al‐Ghafiqī ibn as-Saffar al‐Andalusi (born in Cordoba, died in the year 1035 at Denia), also known as Ibn as-Saffar (, literally: son of the brass worker), was a Spanish-Arab astronomer in Al-Andalus. He worked at the school founded by his colleague Al-Majriti in Córdoba. His best-known work was a treatise on the astrolabe, a text that was in active use until the 15th century and influenced the work of Kepler. He also wrote a commentary on the Zij as-Sindhind, and measured the coordinates of Mecca.

Ibn as-Saffar later influenced the works of Abu as-Salt.

Paul Kunitzsch argued that a Latin treatise on the astrolabe long attributed to Mashallah, and used by Chaucer to write A Treatise on the Astrolabe, is in fact written by Ibn as-Saffar.

The exoplanet Saffar, also known as Upsilon Andromedae b, is named in his honor.

Saffar Island in Antarctica is named after Ibn as-Saffar.

Notes

References

(PDF version)

References

(2008). "Cosmos: An Illustrated History of Astronomy and Cosmology". University of Chicago Press.
Kunitzsch, Paul. (1981). "On the authenticity of the treatise on the composition and use of the astrolabe ascribed to Messahalla". Archives Internationales d'Histoire des Sciences Oxford.
Selin, Helaine. (2008-03-12). "Encyclopaedia of the History of Science, Technology, and Medicine in Non-Western Cultures". Springer Science & Business Media.

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