Copie vun File:AstroDeklinationRektazension-de.jpg op Lëtzebuergesch iwwersat I, the copyright holder of this work, hereby publish it under the following...
File:AstroDeclinationRightascension.png Source Own work based on: AstroDeclinationRightascension.png by Ulrich.fuchs and AstroDeklinationRektazension-de...