Barr,
E.D.
Max Planck Institute for Radio Astronomy, Max Planck Society;
Cameron,
A.D.
Max Planck Institute for Radio Astronomy, Max Planck Society;
Champion,
D.J.
Max Planck Institute for Radio Astronomy, Max Planck Society;
Eatough,
R.P.
Max Planck Institute for Radio Astronomy, Max Planck Society;
Kramer,
M.
Max Planck Institute for Radio Astronomy, Max Planck Society;