Past affiliation(s) within the IAU
- Past President of Commission 25 Astronomical Photometry and Polarimetry (2003-2006)
- Past President of Division IX Optical & Infrared Techniques (2000-2003)
- Past Vice-President of Commission 25 Astronomical Photometry and Polarimetry (2000-2003)
- Past Vice-President of Commission 25 Astronomical Photometry and Polarimetry (1997-2000)
- Past Advisor of Division IX Optical & Infrared Techniques (2003-2006)
- Past Organizing Committee Member of Commission 25 Astronomical Photometry and Polarimetry (2006-2009)
- Past Organizing Committee Member of Division IX Optical & Infrared Techniques (2003-2006)
- Past Organizing Committee Member of Division IX Optical & Infrared Techniques (2000-2003)
- Past Organizing Committee Member of Commission 25 Astronomical Photometry and Polarimetry (1994-1997)
- Past Organizing Committee Member of Commission 25 Astronomical Photometry and Polarimetry (1991-1994)
- Past Organizing Committee Member of Commission 25 Astronomical Photometry and Polarimetry (1982-1985)
- Past Organizing Committee Member of Commission 25 Astronomical Photometry and Polarimetry (1979-1982)
- Past Member of Division A Fundamental Astronomy (until 2022)
- 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 D High Energy Phenomena and Fundamental Physics (until 2022)
- Past Member of Division E Sun and Heliosphere (until 2022)
- Past Member of Division F Planetary Systems and Astrobiology (until 2022)
- Past Member of Division G Stars and Stellar Physics (until 2022)
- Past Member of Division H Interstellar Matter and Local Universe (until 2022)
- Past Member of Division J Galaxies and Cosmology (until 2022)
- Past Member of Commission B6 Astronomical Photometry and Polarimetry (2015-2022)
- Past Member of Commission G1 Binary and Multiple Star Systems (2015-2022)
- Past Member of Commission G4 Pulsating Stars (2015-2022)
- Past Member of Commission 25 Astronomical Photometry and Polarimetry (2003-2015)
- Past Member of Commission 27 Variable Stars (until 2015)
- Past Member of Commission 37 Star Clusters & Associations (until 2015)
- Past Member of Commission 42 Close Binary Stars (until 2015)
- Past Member of Division VII Galactic System (until 2012)
- Past Member of Division IX Optical & Infrared Techniques (until 2012)
Areas of interest
1 - General: 1.1 - Editorials notices, 1.3 - History and philosophy of astronomy, 1.4 - Miscellaneous, 1.5 - Publications, bibliography, 1.11 - Standards
2 - Physical data and processes: 2.5 - Accretion, accretion disks, 2.15 - Gravitational waves, 2.23 - Nuclear reactions, nucleosynthesis, abundances, 2.26 - Polarization, 2.27 - Radiation
3 - Astronomical instrumentation, methods and techniques: 3.1 - Atmospheric effects, 3.3 - Instrumentation, 3.6 - Site testing, 3.9 - Techniques, 3.10 - Telescopes: optical
4 - Astronomical data bases: 4.1 - Astronomical databases: miscellaneous, 4.2 - Atlases, 4.3 - Catalogs, 4.4 - Surveys, 4.5 - Virtual observatory tools
5 - Astrometry and celestial mechanics: 5.1 - Astrometry, 5.6 - Parallaxes, 5.7 - Proper motions, 5.8 - Reference systems, 5.9 - Time
6 - The Sun: 6.1 - Sun: abundances, 6.2 - Sun: activity, 6.7 - Sun: evolution, 6.11 - Sun: fundamental parameters, 6.12 - Sun: general
7 - Planetary systems: 7.2 - Moon, 7.3 - Comets, 7.8 - Minor planets, asteroids, 7.9 - Near Earth Objects , 7.14 - Exoplanets
8 - Stars: 8.4 - Stars: binaries, 8.12 - Stars: fundamental parameters, 8.26 - Stars: novae, cataclysmic variables, 8.38 - Stars: variables, 8.39 - Stars: white dwarfs
9 - Interstellar medium (ISM), nebulae: 9.6 - ISM: dust, extinction, 9.7 - ISM: evolution, 9.8 - ISM: general, 9.10 - ISM: Herbig-Haro objects, 9.16 - ISM: planetary nebulae
10 - The Galaxy: 10.5 - Galaxy: evolution, 10.7 - Galaxy: fundamental parameters, 10.8 - Galaxy: general, 10.15 - Galaxy: open clusters and associations, 10.18 - Galaxy: structure
11 - Galaxies: 11.6 - Galaxies: distances and redshifts, 11.12 - Galaxies: general, 11.27 - Galaxies: photometry, 11.32 - Galaxies: star clusters, 11.36 - Galaxies: stellar content
12 - Cosmology: 12.3 - Cosmology: miscellaneous, 12.4 - Cosmology: observations, 12.6 - Cosmology: dark matter, 12.9 - Cosmology: distance scale, 12.11 - Cosmology: large-scale structure of Universe