On Friday 25 April, Prof. Arnold van Ardenne, connected to ASTRON and inhabitant of Assen (Drenthe), received a decoration by mayor Mrs. C. Abbenhues of Assen. In total, five people received the decoration for special merits to society. The ceremony took place in the council chamber in the city hall of Assen.

Prof. Van Ardenne (65) has been connected to ASTRON since 1994 in different positions. His last position at the institute was director of the division Emerging Technologies. Van Ardenne has, from his position and by participating in different international cooperations, committees and panels, largely contributed to developments in radio astronomy and space research in general.

Besides this, he also contributed to the design and development of new technologies in the field of radio telescopes and antennas. The LOFAR telescope in Drenthe, designed and built by ASTRON, was in this respect the first large scale radio telescope in the world and is a worldwide unique project. The activities of Van Ardenne have contributed to a leading position that the Netherlands and ASTRON have in this field.

Prof. Van Ardenne was appointed Officer in the Order of Orange-Nassau.

Published by the editorial team, 25 April 2014


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On June 13-17, the LOFAR Family Meeting took place in Cologne. After two years LOFAR researchers could finally meet in person again. The meeting brings together LOFAR users and researchers to share new scientific results.

Our renewed ‘Melkwegpad’ (Milky Way Path) is finished! The new signs have texts in Dutch on the one side and in English on the other side. The signs concerning planets have a small, 3D printed model of that planet in their centre.
#Melkwegpad @RTVDrenthe

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The background drawing shows how the subband correlator calculates the array correlation matrix. In the upper left the 4 UniBoard2s we used. The two ACM plots in the picture show that the phase differences of the visibilities vary from 0 to 360 degrees.

Daily image of the week: Testing with the Dwingeloo Test Station (DTS)
One of the key specifications of LOFAR2.0 is measuring using the low- and the highband antenna at the same time. For this measurement we used 9 lowband antenna and 3 HBA tiles.