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