SUGONII USTURLOBI Ahmad ibni Muhammad

SUGONII USTURLOBI Ahmad ibni Muhammad (soli tavallud nomalum — vafot taqriban 990), olimi marufi fors-tojik. Aslan az Sugon — yake az dehahoi Marvorud (dar Khuroson) buda, qismi asosii hayotash dar Bagdod guzashtaast. Hamchun astronom, matematik va ikhtirokori asbobhoi astronomi shuhrat paydo karda, dar madrasahoi Bagdod oid ba ilmhoi daqiq dars guftaast. Dar davrai hukmronii Sharafuddavla (pisari Azududdavlai Daylami) dar Bagdod rasadkhonae bino namudaast va hamrohi shogirdash Abusahli Kuhi solhoi 980— 989 jirmhoi osmoniro mushohida namuda, arzi jugrofii Bagdod va mayli ekliptikaro nisbatan sahehmuayyan namudaast, ki az qimati asli tanho 44″ farq mekardu khalos (baroi soli 985; 23^o35′).

Osori ilmii Sugonii Usturlobi ba sohahoi gunoguni ilmhoi daqiq oid buda, mutaassifona aksariyati onho to zamoni mo narasidaand. Az risolahoiSugonii Usturlobi «Takhtit-ul-usturlob» («Khatohoi usturlob»), «Kitob fi tasheh-it-tom» («Kitob oid ba hamvorihoi purra»), «Qavonini ilmi hayat» va gayro nombar namudan mumkin ast.        X. Abdullozoda.