A recent case study was done at H3D to display our angular resolution while using Coded Aperture Imaging.
Below is an image of two Co-57 sources at a 5 degree angle from an H series system. Using Coded Aperture Imaging, the two sources are distinguishable from each other.
Unlike Compton Imaging, the angular resolution of Coded Aperture Imaging can distinguish two sources that are only 5 degrees apart. If you have any questions about angular resolution with Coded Aperture Imaging, let us know!