Book of Fixed Stars

The constellation Sagittarius in a manuscript of al-Sufi's Book of Fixed Stars

The Book of Fixed Stars (in Arabic: كتاب صور الكواكب  /kitab suwar al kawakib/) is an astronomical text written by Abd al-Rahman al-Sufi (Azophi) around 964. The book was written in Arabic, although the author himself was Persian. It was an attempt to create a synthesis of the most popular classical work of astronomy — Ptolemy’s Almagest — with the indigenous Arabic tradition, or Anwa.

The book was thoroughly illustrated along with observations and descriptions of the stars, their positions, their magnitudes (brightness) and their color. His results were set out constellation by constellation. For each constellation, he provided two drawings, one from the outside of a celestial globe, and the other from the inside.

The work was highly influential and survives in numerous manuscripts and translations. The oldest manuscript, kept in the Bodleian Library, dates to AD 1009 and is the work of the author's son.

He has the earliest known descriptions and illustrations of what he called "A Little Cloud" which is actually the Andromeda Galaxy. He mentions it as lying before the mouth of a Big Fish, an Arabic constellation. This "cloud" was apparently commonly known to the Isfahan astronomers, very probably before 905 AD. The first recorded mention of the Large Magellanic Cloud was also given by Abd Al-Rahman Al Sufi in his Book of Fixed Stars. These were the first galaxies other than the Milky Way to be observed from Earth. The Great Andromeda Nebula he observed was also the first true nebula to be observed, as distinct from a star cluster.

He probably also cataloged the Omicron Velorum star cluster as a "nebulous star", and an additional "nebulous object" in Vulpecula, a cluster now variously known as Al Sufi's Cluster, the "Coathanger asterism", Brocchi's Cluster or Collinder 399. Moreover, he mentions the Large Magellanic Cloud as Al Bakr, the White Ox, of the southern Arabs as it is visible from Southern Arabia, although not from more northern latitudes.

Editions

• Ketāb ṣowar al-kawākeb al-ṯābeta, edited from five mss., and accompanied by the Orǰūza of Ebn al-Ṣūfī, Hyderabad, India, 1954 (introduction by H. J. J. Winter).
• Facsimile edition of the Persian translation by Naṣīr-al-dīn Ṭūsī (Ayasofya 2595, autograph, from Uluḡ Beg’s library), Tehran, 1348 Š./1969.
• Critical edition of Ṭūsī's translation by Sayyed Moʿezz-al-dīn Mahdavī, Tehran, 1351 Š./1972.
• French translation with selected portions of the Arabic text, from two mss., H. C. F. Schjellerup, Description des étoiles fixes par Abd-al-Rahman al Sûfi, St. Petersburg, 1874.
• Text and French translation of Ṣūfī's introduction by J. J. A. Caussin de Perceval in Notices et extraits des manuscrits XII, Paris, 1831, pp. 236f.
• The star nomenclature of the Castilian version, and of an Italian translation made from Castilian, was critically edited by O. J. Tallgren, Los nombres arabes de las estrelas y la transcripción alfonsina, in Homenaje a R. Menéndez Pidal II, Madrid, 1925, with 'Correcciones y adiciones' in Revista de filología española 12, 1925, pp. 52f.
• The Italian translation was edited by P. Knecht, I libri astronomici di Alfonso X in una versione fiorentina del trecento, Saragossa, 1965.
• Ketāb al-ʿamal bi’l-asṭorlāb in 386 chapters, ed. from a Paris ms., Hyderabad (Deccan), 1962; an English introduction, by E. S. Kennedy and M. Destombes, was printed separately (Hyderabad, 1967).

References

• Paul Kunitzsch, The Arabs and the Stars: Texts and Traditions on the Fixed Stars, and Their Influence in Medieval Europe (Variorum Reprint, Cs307)
• P. Kunitzsch, Arabische Sternnamen in Europa, Wiesbaden, 1959, p. 230f.
• P. Kunitzsch, Ṣūfī Latinus, ZDMG 115, 1965, pp. 65–74.
• P. Kunitzsch, 'Al-Ṣūfī' in: Dictionary of Scientific Biography XIII, New York, 1976, pp. 149–50.
• J. Upton, A Manuscript of “The Book of the Fixed Stars” by ʿAbd ar-Raḥmān aṣ-Ṣūfī, Metropolitan Museum Studies 4, 1933, pp. 179–97.
• E. Wellesz, An Islamic Book of Constellations, Oxford, 1965.
• H. J. J. Winter, Notes on al-Kitab Suwar Al-Kawakib, Archives Internationales d’Histoire des Sciences 8, 1955, pp. 126–33.

External links

• Biography of Al Sufi
• Copy (dated c. 1730) of al-Sufi's Book of the Fixed Stars
• Ulugh Beg in www.atlascoelestis.com
• Liber locis stellarum fixarum, 964, manoscritto del 1417 riprodotto il 1730 in www.atlascoelestis.com
• Pergamenthandschrift M II 141 in www.atlascoelestis.com
• A page about Muslim Astronomers
• Al-Sufi's constellations