The Algonquin Radio Observatory (ARO) is a radio observatory located in Algonquin Provincial Park in Ontario, Canada. It opened in 1959 in order to host a number of the National Research Council of Canada's (NRC) ongoing experiments in a more radio-quiet location than Ottawa. In 1962 it was selected as the site for the Algonquin 46m radio telescope, which has been the site's primary instrument through most of its history. An earlier 10 m instrument was set up in 1961 though was not equipped with a drive mechanism until 1964. The site also hosts a hydrogen maser, a standard feature for radio telescopes that can also serve to receive telemetry from deep space missions. Other instruments formerly at the site included a solar-observing array of thirty-two 10 ft (3 m) dishes, and a single 1.8 m solar flux monitor observing at 10.7 cm wavelength, and an 18 m radio telescope from the University of Toronto. More information...
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