A stellar flare during the transit of the extrasolar planet OGLE-TR-10b S. J. Bentley, C. Hellier, P. F. L. Maxted, V. S. Dhillon, T. R. Marsh, C. M. Copperwheat and S. P. Littlefair A&A, 505 2 (2009) 901-902 Published online: 18 August 2009 DOI: 10.1051/0004-6361/200912257