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Radio Astronomy (Radio Astronomie)
1991Aperture Synthesis Telescopes — Commissioning tests and observations have been made using three antennas in the Australia Telescope (AT), spaced up to 2km apart, and the first image of a radio source observed at 6cm was produced in 1989. The IRAM millimeter array in France comprizing three 15-m antennas has been commissioned at 3mm. A fourth antenna is
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Radio Astronomy (Radio Astronomie)
1971The President welcomed members of the Commission and the large gathering of non-members present. He recorded with deep regret the death in July 1968 of Professor S. E. Khaikin of Pulkovo Observatory.
J. P. Wild, S. F. Smerd
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