(1) Institute for Theoretical Astrophysics, University of Tübingen, Auf der Morgenstelle 10, 7400 Tübingen, F.R.G.;(2) Institute of Applied Astronomy, 8 Zhdanov Street, 197042 Leningrad, U.S.S.R.
Abstract:
The subject of relativistic reference frames in astronomy is discussed with respect to the problems and needs of the various user groups. For didactical reasons the discussion is presented in form of a sequence of questions and answers.