Past affiliation(s) within the IAU

• Past President of Commission 27 Variable Stars (1979-1982)
• Past Vice-President of Commission 27 Variable Stars (1976-1979)
• Past Organizing Committee Member of Commission 27 Variable Stars (1982-1985)
• Past Organizing Committee Member of Commission 27 Variable Stars (1973-1976)
• Past Member of Division B Facilities, Technologies and Data Science (until 2022)
• Past Member of Division C Education, Outreach and Heritage (until 2022)
• Past Member of Division G Stars and Stellar Physics (until 2022)
• Past Member of Commission 25 Astronomical Photometry and Polarimetry (until 2015)
• Past Member of Commission 27 Variable Stars (until 2015)
• Past Member of Commission 41 History of Astronomy (until 2015)
• Past Member of Division V Variable Stars (until 2012)
• Past Member of Division IX Optical & Infrared Techniques (until 2012)
• Past Member of Division XII Union-Wide Activities (until 2012)