Georg Zotti

Ludwig Boltzmann Institute for Archaeological Prospection and Virtual Archaeology, Austria


AUTHOR'S ARTICLES

The Observational Instruments at the Maragha Observatory after AD 1300

by Georg Zotti Published on: 5th November 2020

The present paper introduces, investigates, analyses, and comments on an anonymous treatise in Persian named al-Risāla al-Ghāzāniyya fi ’l-ālāt al-raṣadiyya, “Ghāzān’s (or Ghāzānid) treatise on the observational instruments”, which describes the structure, construction, and functions…

Biruni’s Telescopic-Shape Instrument for Observing the Lunar Crescent

by Georg Zotti Published on: 17th October 2020

This paper deals with an optical aid named barbakh that Abū al-Rayḥān al-Bīrūnī (973–1048 CE) proposes for facilitating the observation of the lunar crescent in his al-Qānūn al-Mas‘ūdī VIII.14. The device consists of a long…

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