Mohammed al-Rudani

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Mohammed al-Rudani (Abu Abdallah Muhammad ibn Sulayman (Muhammad) al-Fasi ibn Tahir al-Rudani al-Susī al-Maliki al-Maghribi ) (c. 1627 – 1683) was an astronomer born in Taroudannt, Morocco.

Al-Rudani spent most of his life in Ottoman territories. He is especially well known for the invention of a spherical device into which another sphere (painted blue) with a different axis was placed. This second sphere was divided into two parts in which the zodiacal signs with their sections and regions were drawn. Al-Rudānī wrote a book describing it, Al Nāfia fī amal al jāmia (Medina, 1662). Rudānī's best known work is Bahja al ullāb fī al amal bi l as urlāb, a book on how to make and use an astrolabe.


  • Suter, Heinrich (1981). Die Mathematiker und Astronomen der Araber und ihre Werke, Amsterdam: APA Oriental Press, p. 203 (no. 527).
  • R Lorch - 1980, "The sphera solida and related instruments", in Centaurus

Volume 24 Issue 1, Pages 153 - 161, published Online: 26 Jul 2007

  • Ch. Pellat, "L'astrolabe sphérique d'al-Rudani", in: BULLETIN D'ETUDES ORIENTALES Tome XXVI - 1973. Damas, 1974

External links[edit]

  • Ayduz, Salim (2007). "Rudānī: Abū ʿAbdallāh Muḥammad ibn Sulaymān (Muḥammad) al‐Fāsī ibn Ṭāhir al‐Rudānī al‐Sūsī al‐Mālikī [al‐Maghribī]". In Thomas Hockey; et al. (eds.). The Biographical Encyclopedia of Astronomers. New York: Springer. p. 990. ISBN 978-0-387-31022-0. (PDF version)