Islamic Arabic 560 (Cadbury Research Library, University of Birmingham)
2 works by 2 authors on the subject of Astronomical instruments
Fol. 1 is a wholly extraneous leaf of much later date. The MS proper begins with fol. 2.
The work seems to be complete down to the 6th bāb of the first faṣl of the 4th maqāla. The remainder is missing, except that fol. 30 contains a fragment of text around the 2nd bāb of the first faṣl of the 5th (and last) maqāla.
See Yāqūt, Irshād 7,241: '[Badīʻ al-Asṭurlābī] made good a deficiancy in the shāmila instrument which [Khujandi] had invented. The latter had constructed the instrument for one latitude, and proved that it was not possible to make it serve more than one latitude. [Badīʻ al-Asṭurlābī], however, pondered over it and discovered a method of constructing it to serve for various latitudes.' The present text is evidently Badīʻ al-Asṭurlābī's theoretical demonstration of the deficiency of Khujandi's work.
In very poor condition, faded and tattered.
Written in Naskhī of probably the 13th century
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