Download OLC-specific COWBAT targets
        :param databasepath: path to use to save the database
        :param database_name: name of current database
        :param download_id: figshare identifier of .tar.gz file

def cowbat_targets(self, databasepath, database_name='COWBAT', download_id='13197437'):
        """
        Download OLC-specific COWBAT targets
        :param databasepath: path to use to save the database
        :param database_name: name of current database
        :param download_id: figshare identifier of .tar.gz file
        """
        self.custom_databases(databasepath=databasepath,
                              database_name=database_name,
                              download_id=download_id)