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Southern Sky Survey

A photographic survey of the sky south of declination -17°, carried out jointly by the 1.2-meter United Kingdom Schmidt Telescope at Siding Spring and the European Southern Observatory's 1-m Schmidt camera. Both these instruments have the same focal length as the 1.2-m Oschin Schmidt, which produced the northern-hemisphere Palomar Observatory Sky Survey, so the scale of the plates in each survey is identical.

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