NGC 1566  NGC 1566, sometimes known as the Spanish Dancer, is an intermediate spiral galaxy in the constellation Dorado. It is the dominant and brightest member of the Dorado Group, being among the brightest Seyfert galaxies in the sky. Absolute luminosity is , and is calculated to contain of H I. On June 19, 2010, Berto Monard from South Africa detected a magnitude 16 supernova 13" west and 22" south of the center of NGC 1566 at coordinates 04 19 58.83 -54 56 38.5.