National
Member of NFR's ESO-NOT Committee, 1991 - 1996
Astronomy representative on the Manne Siegbahn Memorial Lecture Committee, 1995 - date
Member of the Swedish National Committee for Astronomy, 1996 - date
International
Sweden's national representative in the ESO Observing Program Comittee (OPC), 1991 - 1996
Sweden's national representative in IAU Commission 46, 1996 - date