Disc of material around the supergiant star HD 62623 ESO/F. Millour Chi Cygni observed with IOTA Sylvestre Lacour T Leporis observed with the VLTI ESO/J.-B. Le Bouquin et al. Disc around IRAS 13481-6124 ESO/S. Kraus Intensity image of the surface of Altair. CHARA (MACIM / MEM) John D. Monnier, M. Zhao, et al. 2007 Hervé Le Coroller (T80/OHP Fringes) Numerical simulations Dr. Bernd Freytag Image reconstruction simulations Eric Thiebaut (code MiRA)