Poster abstract details

Two are the main systematics effects preventing the full exploitation of ultra-deep imaging: the scatter light produced by the point spread function (PSF) and the curtains of dust also known as galactic cirri. Without addressing these phenomena, our efforts for getting ultra-deep imaging of the sky result fruitless. Here we present how to produce star-free imaging of the sky by careful characterization of the PSF and the scatter light associated. We also show a detailed analysis of the photometric properties of the galactic cirri. Having such characterization done, we describe how to discern between the galactic cirri and the background galaxies. We will show how these new techniques are fundamental if we want to fully exploit the science contained in ultra-deep data imaging.