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20.6.61 The radio telescope interferometer at the Royal Radar Establishment The Ministry of Aviation has built at the Royal Radar Establishment a new installation for astronomical and upper atmosphere research. The Equipment, which is on the site of a former airfield at Defford, near Malvern, consists of two steerable and mobile radio telescopes with parabolic reflectors which can be used either separately or in conjunction as an interferometer. The radio telescopes can be operated over a wide range of wavelengths down to a few centimeters, and their spacing can be varied up to about 1, 000 metres in any orientation for interferometric observation of high angular resolution. The aerials can be used both as radiometers for the reception of radio emissions and also with transmitters for radar astronomy. Photo Shows: A view of one of the radio telescopes which is mounted on a carriage which is triangular in plan, having an eight-wheel bogie at each corner. Two of these bogies run on one standard-gauge railway track, and the third bogie runs on a similar track 90 feet away. The can be driven electrically along the tracks

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Aerials Angular Astronomical Bogie Bogies Centimeters Conjunction Consists Driven Either Electrically Emissions Establishment Installation Interferometric Malvern Mobile Operated Orientation Parabolic Radar Reflectors Resolution Runs Separately Similar Spacing Steerable Telescope Telescopes Transmitters Triangular Varied Wavelengths

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