The XMM-Newton survey in the Marano field - I. The X-ray data and optical follow-up M. Krumpe, G. Lamer, A. D. Schwope, S. Wagner, G. Zamorani, M. Mignoli, R. Staubert, L. Wisotzki and G. Hasinger A&A, 466 1 (2007) 41-61 Published online: 12 February 2007 DOI: 10.1051/0004-6361:20065849