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Bediüzzaman el-Usturlâbî Hibetullah b. Huseyin b. Ahmed, Ebü'l-Kasım el-Bağdâdî (2-1139)
Doctor, philosopher, astronomer, poet.
He is one of the most famous Muslim Arab scholars who lived in the late 11th and early 12th centuries. His name is Ebü'l-Kasım Hibetullah b. Huseyin b. It is also said that he is Yusuf (or Ahmed). He became very famous especially in astronomy and in the production of the astrolabe instrument. His place and date of birth are unknown. He was found in Isfahan in 1117 and later settled in Baghdad. During the time of the Abbasid Caliph al-Mustershid (1118-1135), he made astronomy instruments and thus became very rich. In 1130, he managed the astronomical observatory in the Seljuk palace in Baghdad. Zîc-i Mahmüd'ı, which he prepared here, was written by Seljuk Sultan Ebü'l-Kasım Mahmud b. He dedicated it to Muhammad (1118-1131). He died in Baghdad in 1139.
Apart from the ruler, compass, etc. that he invented for the first time, he also created additional parts of the kurre-i zat al-kursi, which had not been completed until then.
He completed his tools and wrote a work about it. He also made various other tools by completing the deficiencies of the tool made by Hucendî.
Bediüzzaman el-Usturlâbî also became very famous in poetry and collected his poems in a divan.
works
1. el-Mu'ribü'l-Mahmüdî. It is a statement about astronomy.“ 2. Dürretü't-tâc. They are poems.