Nuffield Radio Astronomy Laboratories

Kellermann of the National Radio Astronomy Observatory in Charlottesville, Va., who worked with the Very Large Array (VLA) of radiotelescopes near Socorro, N.M.; Bruce Partridge of Haverford (Pa.) College, who also worked with the VLA; and Rod Davies of the Nuffield Radio Astronomy Laboratories in Jodrell Bank, England, and Anthony Lasonby of Cambridge University, both working with an antenna in the Canary Islands.