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The Square Kilometre Array (SKA) is a radio telescope interferometer array in development with receiver arrays in two regions of the world, one centered in Australia and the other in South Africa. The project is the work of an international consortium with other countries contributing. The name reflects the aim of creating an array with a collecting area on the order of a square kilometer. Plans are to begin construction in 2024, with observations using a portion of it beginning in 2028, and construction completion around 2030. Plans are to eventually provide continuous coverage of frequencies 50 MHz to 14 GHz. Plans are to bring it out in two phases: SKA1 and SKA2.
SKA1-low is a sub-project to build an array in Australia covering 50 MHz to 350 MHz, using Low Frequency Aperture Array (LFAA) antennas.
SKA1-mid is a sub-project to build an array in South Africa covering 350 MHz to 14 GHz.
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