def coords_to_decals_skyviewer(ra, dec):
    """
    Get decals_skyviewer viewpoint url for objects within search_radius of ra, dec coordinates. Default zoom.
    Args:
        ra (float): right ascension in degrees
        dec (float): declination in degrees

    Returns:
        (str): decals_skyviewer viewpoint url for objects at ra, dec
    """
    return 'http://www.legacysurvey.org/viewer?ra={}&dec={}&zoom=15&layer=decals-dr5'.format(ra, dec)