Sensitive radio observations of extragalactic fields yield important boundary conditions to study the evolution of galaxies throughout cosmic time. One of the main goals is to separate the energy output from accretion in Active Galactic Nuclei from that in actively star-forming galaxies. VLBI observations can filter out low brightness temperature objects from such surveys since they are sensitive only to the very high brightness temperatures in AGN. However, it is technically challenging to image objects spread out across fields of a few arcminutes in extent. The high spectral and temporal resolution required in correlation to prevent bandwidth and time smearing results in huge data sets, which are difficult to store and process. Here we describe the results of an 9h long observation with the VLBA to produce images of 96 radio sources located within the primary beam of the antennas.