What we look forward to in LOFAR 2.0: High-precision clock to all Dutch stations

By Peter Maat

In the LOFAR radio telescope, the observation data is synchronized over time for accurate processing of the received signals. Until now, the telescope uses GPS techniques to synchronize the observation data, achieving an accuracy between 1 ns and 10 ns.

Published by the editorial team, 15 June 2020

To further expand the scientific possibilities of LOFAR, the accuracy of its time synchronization system will be improved in the coming time. Instead of using GPS, the Dutch part of LOFAR will be equipped with a new timing system that uses synchronous optical clock distribution via LOFAR's fiber-optic network. This clock system upgrade will be accomplished using state-of-the-art clock distribution technology capable of achieving timing accuracies of better than 100 ps.


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Daily image of the week

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.

Ook ASTRON is onderdeel van De Verhalen van Drenthe. Ons Melkwegpad in Westerbork, de Open Science Hub en radiotelescoop in Dwingeloo en de Telescopen-puzzelroutes in Dwingeloo, Westerbork en Exloo vertellen boeiende verhalen over onze Melkweg.