• O-rich Semiregular and Irregular variables
• AGB-stars in external galaxies
• Interrelation of mass-loss and pulsation
• Morphology, nonspherical mass loss and disks
• Mineralogy of circumstellar dust
• More info on the pages of the AGB-working group

Instrumentation and Observations

• Participation in space astronomy payloads like those for Herschel-Pacs, Plato, Spica-Safari, Corot, Most or Brite
• Leading Co-I of the Austrian participation in Herschel-Pacs
• More info on the pages of my Herschel project
• Doing infrared photometry and spectroscopy (IAC-TCS, ESO, ISO),
  CCD-Imaging (FOA, NOT), and
  mm/submm-radio observations (OSO 20m, SEST, JCMT, OVRO)
• Experiments with simple interferometry systems
• Solar eclipse phenomenology

History of Astronomy

• Co-Head of the Collection and Museum of our institute
• Catalogue of the Rare Book Collection of our institute (part 1:15-17th century, part 2:18th century, Peter Lang Verlag); access also throught the OPAC of our University Library (enter code "A107" for the observatory collection and filter)
• Astronomy in Vienna and Austria

Academic Memberships, Committees, Meetings

• Co-founder and long time board member of the Österreichische Gesellschaft für Astronomie und Astrophysik
• Member of International Astronomical Union, European Astronomical Society, Astronomische Gesellschaft, Pro Scientia, Forum St. Stephan
• Member of ESAs Astronomy Working Group from 1999-2001
• Referee for A&A, A&A Letters, MNRAS
• Panelchair, Referee, evaluator or expert  for Sixth and Seventh European Union Framework Programme, European Space Agency, Deutsche Forschungsgemeinschaft, Italian Space Agency, Instituto de Astrofisica de Canarias, Katholieke Universiteit Leuven, Friedrich-Schiller-Universität Jena