VLBI imaging throughout the primary beam using accurate UV shifting J. S. Morgan, F. Mantovani, A. T. Deller, W. Brisken, W. Alef, E. Middelberg, M. Nanni and S. J. Tingay A&A, 526 (2011) A140 Published online: 12 January 2011 DOI: 10.1051/0004-6361/201015775