H2 excitation imaging of the Orion Molecular Cloud L. E. Kristensen, M. Gustafsson, D. Field, G. Callejo, J. L. Lemaire, L. Vannier and G. Pineau des Forêts A&A, 412 3 (2003) 727-734 Published online: 08 December 2003 DOI: 10.1051/0004-6361:20031276