Abiyun al-Bitriq

Abiyun al-Bitriq (ابيون البطريق, abiyūn al-biṭrīq, fl. 630 CE ) was a mathematician and a maker of astronomical instruments at the beginnings of Islam. He is mentioned in al-Qifti's Tarikh al-Hukama as Anibun (أنبون, anibūn), and al-Nadim's Fihrist. His name is not certain, and it was probably Apion (Ἀπίων) or Apion Patrikios (Ἀπίων Πατρίκιος). He wrote a book, now lost, titled "On Operating the Planispherical Astrolabe" (كتاب العمل بالاسطرلاب المسطح, kitāb al-ʿamal bi-l-asṭurlāb al-musaṭṭaḥ)