Past affiliation(s) within the IAU

• Past President of Commission 9 Instruments (1985-1988)
• Past Vice-President of Commission 9 Instruments (1982-1985)
• Past Organizing Committee Member of Commission 9 Instruments (1991-1994)
• Past Organizing Committee Member of Commission 9 Instruments (1988-1991)
• Past Member of Division A Fundamental Astronomy (until 2023)
• Past Member of Division D High Energy Phenomena and Fundamental Physics (until 2023)
• Past Member of Division E Sun and Heliosphere (until 2023)
• Past Member of Division F Planetary Systems and Astrobiology (2015-2023)
• Past Member of Division H Interstellar Matter and Local Universe (until 2023)
• Past Member of Commission F2 Exoplanets and the Solar system (2015-2023)
• Past Member of Commission H2 Astrochemistry (2015-2023)
• Past Member of Commission 9 Instruments (1988-1994)