Imaging the spotty surface of Betelgeuse in the H band X. Haubois, G. Perrin, S. Lacour, T. Verhoelst, S. Meimon, L. Mugnier, E. Thiébaut, J. P. Berger, S. T. Ridgway, J. D. Monnier et al. (2 more) A&A, 508 2 (2009) 923-932 Published online: 21 October 2009 DOI: 10.1051/0004-6361/200912927