Example of a UDG, SMDG,J0406539–480442, identified in the KEDFS field using the NASIM pipeline. The K_s -band image highlights the galaxy’s diffuse structure, with a zoom-in panel providing a closer view. Several galaxy clusters are also visible in the field, making this a particularly rich and interesting region. This figure illustrates NASIM’s ability to recover faint, extended features in crowded NIR fields.