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The number and the nature of emission line stars in the young open clusterNGC6611 is still the object of debates. Due to the presence of a strong andvariable nebulosity in the cluster, the number of emission line stars is highlydepending on the technique and the resolution used for the observations. Thanksto observations with the ESO-WFI, in slitless spectroscopic mode, and with theVLT-GIRAFFE we have been able to disentangle the circumstellar and nebularemissions. We confirm the small number of true emission line objects and weprecise their nature: mainly Herbig Be stars.

On the nature of early-type emission line objects in NGC6611