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MCQAdvancedTelescopes, Observing & Instrumentation
USAAAO — 2020 First Round
Question 27
In April, the Event Horizon Telescope released the first image of the supermassive black hole of M87. The black hole has a diameter of approximately 270 AU and is located at a distance of 16.4 Mpc. At the observed wavelength of 1.3 mm, what is the approximate minimum baseline, or effective diameter, required to image the black hole?
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