The Square Kilometre Array (SKA) project will build the largest radio telescope in the world with telescope facilities deployed in Australia and South Africa covering a frequency range from 50 MHz to 15 GHz (initial phase). The approval for the start of construction from its governing Council occurred in June 2021. This paper reviews the key science drivers and the outline observatory organization, design summary and site locations. We note the current progress and status of the SKA construction and projected schedule, noting the challenges within the current global climate.
The Square Kilometre Array is a global research infrastructure project to construct and operate a radio telescope observatory of unprecedented scale. The first stage of the project’s implementation (SKA1) has concluded its design phase and is about to begin construction in 2021. Composed of two interferometric arrays covering a frequency range of 50-350 MHz in Australia (SKA-LOW) and 350 MHz to 15.4 GHz in South Africa (SKA-MID), the observatory provides sensitivity and resolution which advance the currently available research infrastructure capabilities across a range of scientific frontiers. We describe the design development process for the SKA1, the antenna design and specifications, and the current construction planning and schedule.
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