Lodewijk Woltjer

Lodewijk Woltjer (26 April 1930 – 25 August 2019) was an Austrian astronomer and editor. He was born in Noordwijk, Netherlands.
From 1964 to 1974 he was Rutherford Professor of Astronomy and Chair of the Astronomy Department at Columbia University in New York. From 1975 to 1987, he was Director General of the European Southern Observatory (ESO). In 1994–1997 he was President of the International Astronomical Union. 
He was the first Editor-in-Chief of "The Astronomy and Astrophysics Review" in 1989 and also the Editor of "the Astronomical Journal" in 1967 to 1974.
Woltjer died on 25 August 2019 in Geneva at the age of 89.