title: Real-time, very-long-baseline interferometry based on the use of a communications satellite.
abstract: The Hermes satellite, a joint Canadian-American program, has been used to provide a communication channel between radio telescopes in West Virginia and Ontario, for very-long-baseline interferometry (VLBI). This system makes possible instantaneous correlation of the data as well as a sensitivity substantially better than that of earlier VLBI systems, by virtue of a broader observational bandwidth. With the use of a geostationary communications satellite it is possible to eliminate the tape recorders and the most troublesome part of the postobservational data processing. A further possibility is the development of a phase-coherent interferometer.
authors.forename: J L
authors.initials: JL
authors.lastname: Yen
authors.forename: K I
authors.initials: KI
authors.lastname: Kellermann
authors.forename: B
authors.initials: B
authors.lastname: Rayhrer
authors.forename: N W
authors.initials: NW
authors.lastname: Broten
authors.forename: D N
authors.initials: DN
authors.lastname: Fort
authors.forename: S H
authors.initials: SH
authors.lastname: Knowles
authors.forename: W B
authors.initials: WB
authors.lastname: Waltman
authors.forename: G W
authors.initials: GW
authors.lastname: Swenson