Only ad-Din al-Bitrudji

Alpetragius is a redirect to this article. For the moon crater, see Alpetragius (moon crater) .

Abu Ishaq Nur ad-Din al-Bitrudschi al-Ishbili ( Arabic أبو إسحاق نور الدين البطروجي الإشبيلي, DMG Abū Isḥāq Nūr ad-Dīn al-Biṭrūǧī al-Išbīlī ; other transcriptions: Ishak ; Only Ed-Din , Nur al-Din ; Al Fraudi , Al-Bitruji , al-Bitrogi , al-Bidruji ; Latinized : Alpetragius ; † around 1204) was an Arab astronomer and philosopher in the heyday of Islam .

Born in Andalusia, he became a student of Ibn Tufail there and was a contemporary of Averroes .

He improved the theory of planetary motions and wanted to avoid the epicyclic theory . This was a modification of the system of planetary motion that his predecessors Ibn Badja and Ibn Tufail had established. His efforts to replace Claudius Ptolemy 's planetary model were unsuccessful because of his imprecise numerical predictions of the planetary positions.

The Alpetragius lunar crater is named after him.

Works

• Kitab al-Hay'ah  /كتاب الهيئة / Kitāb fi 'l-Haiʾa (after 1185)
  • Translated into Latin by Michael Scotus in 1217 , edited by FJ Carmody: al-Bitruji: De motibus coelorum , University of California Press, Berkeley 1952.
  • translated into Hebrew by Moshe ibn Tibbon in 1259
  • Translated in 1528 based on the Hebrew translation into Latin by Kalonimos ben David, printed in Venice in 1531.

literature

• Fritz Krafft : The most important astronomers (marix know). Marix Verlag, Wiesbaden 2007, ISBN 978-3-86539-923-6 , pp. 54-55.