Master of Science, Lund University, 1964. Doctor of Philosophy, Lund University, 1965.
Staff astronomer ESO Lund University, 1965-1979, astronomy chair, since 1979, dean Faculty of Science, 1995-1998, prorector, since 1998. Director European Southern Observatory, Santiago de Chile, 1979-1984, Nordic Optical Telescope S.A., Stockholm, 1984-1995.
Member Royal Swedish Academy of Sciences (Wallmark prize 1977), Royal Physiographical Society, Royal Science Society, International Astronomical Union.
Married Inger Margareta Vinberg, May 5, 1969. Children: Ann, Katrin, Karl.