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William Stephen Finsen

William Stephen Finsen, South African astronomer (Johannesburg 28 July 1905 – Johannesburg 16 May 1979)
 
From Danish parents and nephew of Nobel Prize winner Niels R. Finsen 
 
Discovered over 300 double stars
 
Developed Finsen eyepiece interferometer  
 
 
 

HONORS   

Finsen Dorsum on asteroid 433 Eros

Asteroid 1794 Finsen