def show_legacysurvey(ra, dec, layer='dr8', zoom=14):
    """
    Open browser with legacysurvey.org panner around central position
    """
    #ra, dec = self.get('pan fk5').strip().split()
    url = (f'http://legacysurvey.org/viewer?ra={ra}&dec={dec}'
           f'&layer={layer}&zoom={zoom}')
            
    #os.system(f'open {url}')
    return url