English: Luminance-RGB image showing the full depth of the mosaics of the ABYSS version of the HUDF WFC3 IR. The high signal-to-noise parts of the mosaics are represented with colours (Red: F160W,Green: mean of F125W and F140W bands, Blue:F105W). The low signal-to-noise regions are represented in as a black and white background (black regions are brighter than white regions) according to the mean image of the four mosaics (F105W, F125W, F140W, F160W) of the mosaics of the ABYSS (covering HUDF, deep WFC3 IR region).