https://www.uni-marburg.de/en/fb13/astronomy/observatory/diogenes-observatory
Equipment of the Astro Group - Diogenes Observatory - History of Astronomy and Observational...
of theastro groupobservatory historyequipment
https://arxiv.org/abs/astro-ph/0601378v1
[astro-ph/0601378v1] The complex X-ray morphology of NGC 7618: A major group-group merger in the...
Abstract page for arXiv paper astro-ph/0601378v1: The complex X-ray morphology of NGC 7618: A major group-group merger in the local Universe?