
1) Astronomical catalogue 2) Everyday German physics term 3) Familiar German physics term 4) German physics term 5) Prevalent German physics term
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https://www.crosswordclues.com/clue/durchmusterung

In astronomy, Durchmusterung or Bonner Durchmusterung (BD), is the comprehensive astrometric star catalogue of the whole sky, compiled by the Bonn Observatory (Germany) from 1859 to 1903. Today, the term Durchmusterung includes not only stars but also the search for other celestial objects. Special tasks are the celestial scanning in electromagnet...
Found on
http://en.wikipedia.org/wiki/Durchmusterung
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