This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Fotothek df tg Astronomie Himmelsscheibe. Scan Deutsche Fotothek dftg color MIKCenter Berlin GmbH Frontispiz Frankfurt Main Leipzig Symetria Universi Himmelsscheibe Papier Kupferstich cm Astronomie Himmelsscheibe ppn Druck Deutsche Fotothek gefrdert von der Deutschen Forschungsgemeinschaft Projekt Technikgeschichte Jh Verwalter