Professor of Physics, University of Hawaii

Professor, Dean of the College of Science at Florida Atlantic University

Yale University, Center for Astronomy and Astrophysics

American Association of Variable Star Observers

Scientist-E (Associate Professor) ARIES, Nainital

Emeritus Professor of Physics, Weber State University

ESO Fellow

Professor for Astronomy, Bowling Green State University

Assistant Professor, Pedagogical University of Cracow

Observatory Director, Saint Mary's University