9 August 2016 The SKA low frequency aperture array
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The deployment of the Square Kilometre Array (SKA) [1] starts with a ~10% instrument, phase 1, commencing with construction in 2018. This includes the SKA1-Low, a sparse Aperture Array (AA) covering 50 to at least 350MHz. SKA1-Low will consist of 512 stations, each with 256 antennas creating a total of more than 130.000 antennas. The configuration will be closed packed with a large fraction of the antennas within a 1.7km radius central area and the remaining collecting area situated on three spiral arms, extending to a radius of ~45km.
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J. G. Bij de Vaate, J. G. Bij de Vaate, P. Benthem, P. Benthem, H. Schnetler, H. Schnetler, "The SKA low frequency aperture array", Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 99083X (9 August 2016); doi: 10.1117/12.2231618; https://doi.org/10.1117/12.2231618

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