We have to test the limitations of the standard imaging pipeline for long-baseline data. Main problems will be differential Faraday rotation and the lack of fringe-fitting.

A report of the activities in the Leiden busy week (Imaging BW16) in the long baselines is available here.http://www.jb.man.ac.uk/~njj/bw16_talk.pdf These are tests on the phase calibration/calibration transfer using L72809 and the M81/M82 dataset.