Dr. Roman Brajša (1963) works as astrophysicist at Hvar Observatory, Faculty of Geodesy, University of Zagreb, Croatia. His current position is Tenured Scientific Advisor. He is a member of the Board of Directors of the journal Astronomy and Astrophysics and was also Head of Hvar Observatory and President of Croatian Astronomical Society.  Dr. Arnold Hanslmeier (1959) works as Professor of computational astrophysics at the Institute of Physics of the University of Graz in Austria. He was also Head of the Department of Astrophysics (IGAM) and Head of the Institute of Astronomy and Institute of Physics. He is also member of the University of Vienna as a lecturer.

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• The Sun as a star: fundamental properties.- Solar rotation elements.- Coordinate systems and coordinate transformation.- Methods for solar rotation measurements.- Analysis and reduction of observational data.- A comparison of various observational results of solar differential rotation.- Solar rotation and activity.- Literature.

Dr. Roman Brajša (1963) works as astrophysicist at Hvar Observatory, Faculty of Geodesy, University of Zagreb, Croatia. His current position is Tenured Scientific Advisor. He is a member of the Board of Directors of the journal Astronomy and Astrophysics and was also Head of Hvar Observatory and President of Croatian Astronomical Society.  Dr. Arnold Hanslmeier (1959) works as Professor of computational astrophysics at the Institute of Physics of the University of Graz in Austria. He was also Head of the Department of Astrophysics (IGAM) and Head of the Institute of Astronomy and Institute of Physics. He is also member of the University of Vienna as a lecturer.

Select Guide Rating

• The Sun as a star: fundamental properties.- Solar rotation elements.- Coordinate systems and coordinate transformation.- Methods for solar rotation measurements.- Analysis and reduction of observational data.- A comparison of various observational results of solar differential rotation.- Solar rotation and activity.- Literature.

Dr. Roman Brajša (1963) works as astrophysicist at Hvar Observatory, Faculty of Geodesy, University of Zagreb, Croatia. His current position is Tenured Scientific Advisor. He is a member of the Board of Directors of the journal Astronomy and Astrophysics and was also Head of Hvar Observatory and President of Croatian Astronomical Society.  Dr. Arnold Hanslmeier (1959) works as Professor of computational astrophysics at the Institute of Physics of the University of Graz in Austria. He was also Head of the Department of Astrophysics (IGAM) and Head of the Institute of Astronomy and Institute of Physics. He is also member of the University of Vienna as a lecturer.

Select Guide Rating

• The Sun as a star: fundamental properties.- Solar rotation elements.- Coordinate systems and coordinate transformation.- Methods for solar rotation measurements.- Analysis and reduction of observational data.- A comparison of various observational results of solar differential rotation.- Solar rotation and activity.- Literature.