Deblending of Gaia BP/RP spectra a progress report

With an expected catalogue of 1 billion MW stars in addition to a huge number of extragalactic and solar system's objects, Gaia mission will drastically change our vision of the sky. Considered that the photometric cameras will produce low resolution spectra in two bands, BP ( 300-660 nm) and RP (650-1000 nm), the expected fraction of crowded stars will be of the order of 20%. In this context, the deblending of crowded images will be a real challenge for the algorithms of flux extraction.