Field location and orientation for the mosaic (UDF01−09, in blue) and UDF10 (in red) fields, overlaid on the HST ACS F775W image. The green rectangle indicates the XDF/HUDF09/HUDF12 region containing the deepest near-IR observations from the HST WFC3/IR camera. The magenta circle display the deep ALMA field from the ASPECS pilot program (Walter et al. 2016). North is located 42° clockwise from the vertical axis.