Al-Battani "Albategnius" , son of Jabir ibn Sinan al-Harrani who had a notable reputation as an instrument maker in Harran. The name makes the identification certain that al-Battani himself was professional in making of astronomical instruments and there is a good indication that he learn these skills from his father.
Al-Battani is one of the most popular observers and a leader in geometry, theoretical and practical astronomy, and astrology. He composed work on astronomy, with tables, containing his own observations of the sun and moon and an exact description of their motions than that given in Ptolemy’s “Almagest”.
