SKA director Phil Diamond admits that ‘Square Kilometre Array’ is a bit of a misnomer. The 197 dish antennas of SKA-Mid in South Africa have a total surface area of 33,000m2 (0.033km2). The effective receiver surface area of the dipole antennas of SKA-Low in Australia can be calculated with a complicated formula that is dependent on the observing frequency; it's in the order or 0.4km2. However, the name – Square Kilometre Array’ was conceived in the late 1990s, with the future second phase of the facility in mind, which will have 10 times the number of dishes and antennas. “If that second phase will indeed be realised in the future, we will easily reach a total
Where is the ‘square kilometre’?
Feb 15, 2024
4 minutes
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