Mapping to astropy's coordinate system name

        # TODO: needs expert attention (Most reference systems are not mapped)

def set_coordsys(self):
        """
        Mapping to astropy's coordinate system name

        # TODO: needs expert attention (Most reference systems are not mapped)
        """
        if self.coordsys.lower() in self.coordsys_mapping:
            self.coordsys = self.coordsys_mapping[self.coordsys.lower()]