Gottfried Hagen (PhD Freie Universität Berlin, 1996) is Professor of Turkish Studies at the University of Michigan. He is the author of Ein Osmanischer Geograph bei der Arbeit. Entstehung und Gedankenwelt von Kātib Čelebis Ǧihānnümā (2003, Turkish translation 2017) and many articles on Ottoman geography, cartography, and cosmology.

Robert Dankoff (PhD Harvard University 1971) is Professor Emeritus of Turkish and Islamic Studies at the University of Chicago. His most recent book is Ottoman Explorations of the Nile (2018, with Nuran Tezcan and Michael D. Sheridan).

Cihānnümā is a summa of the Islamic geographical tradition and the first Muslim adaptation of the early modern atlas as the scientific representation of the world. Our translation of Müteferriḳa's printed edition takes full account of Kātib Çelebi's original manuscript.