Past affiliation(s) within the IAU

• Past President of Commission 9 Instruments (1988-1991)
• Past Vice-President of Commission 9 Instruments (1985-1988)
• Past Organizing Committee Member of Commission 26 Double & Multiple Stars (2003-2006)
• Past Organizing Committee Member of Commission 50 Protection of Existing & Potential Observatory Sites (1994-1997)
• Past Organizing Committee Member of Commission 9 Instruments (1991-1994)
• Past Organizing Committee Member of Commission 50 Protection of Existing & Potential Observatory Sites (1991-1994)
• Past Organizing Committee Member of Commission 9 Instruments (1982-1985)
• Past Organizing Committee Member of Commission 9 Instruments (1979-1982)
• Past Member of Division IV Stars
• Past Member of Division XII Union-Wide Activities
• Past Member of Commission 50 Protection of Existing & Potential Observatory Sites
• Past Member of Commission 26 Double & Multiple Stars (2003-2009)
• Past Member of Commission 9 Instruments (1979-1994)