Article ID: CBB001210408

From a Heavenly Arabic Poem to an Enigmatic Judaeo-Arabic Astrolabe (2011)

unapi

Since the sole surviving astrolabe with engraving in Judaeo-Arabic came to light at an auction in 1988 the inscription on the rim has troubled researchers for it appeared to make little sense. We show here that the inscription is a corrupt version of a 10 th-century poem compiled by the astronomer-mathematician-poet Abu [...] Ibrahim al[...] for the ruler [...] al-Dawla when the scholar presented him with an astrolabe; this poem appeared in several manifestations between Baghdad and al-Andalus over the centuries, of which our astrolabe presents the most distorted version. There is also a problem with the plates, the latitudes underlying the markings often being at variance with what is stated on them. The difficulty of dating the astrolabe and assigning it to either of al-Andalus or the Maghrib is discussed.

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Authors & Contributors
Hogendijk, Jan P.
Calvo, Emilia
Thomas Freudenhammer
Muriel Roiland
Bruno Halff
Youssef Ragheb
Concepts
Arab/Islamic world, civilization and culture
Translations
Astrolabes
Mathematics
Astronomy
Scientific apparatus and instruments
Time Periods
10th century
Medieval
11th century
9th century
8th century
Ancient
Places
Spain
Baghdad (Iraq)
Persia (Iran)
Iran
Institutions
Ikhwān al-Ṣafā (Brethren of Purity)
Adler Planetarium, Chicago
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