Observations took place during Fall 97 at Observatoire de Haute Provence, France, with the 1.52 m telescope equipped at that time with adaptive optics.
Extinction results from a destructive interference process.
Morphological features located as close to the star as the first angular Airy ring can be detected, thus breaking a limitation of the classical Lyot coronagraphs. After a short reminding of the principle of AIC, conditions of observations are reported and first results are discussed. Finally, limitations are evaluated and expected results are compared with effective performance.