Durchmusterung

Durchmusterung is a German word for a systematic survey of objects or data.In astronomy, it is the usual name for three comprehensive astrometric star catalogue of the whole sky, processed by the Bonn Observatory (Germany) from 1859 to 1903, named the Bonner Durchmusterung.Today the term Durchmusterung includes not only stars but also the search for other celestial objects. Special tasks are the celestial scanning in electromagnetic wavelengths which are shorter or longer than light waves.
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