NGC 457 (also designated Caldwell 13, and known as the Dragonfly Cluster, E.T. Cluster, Owl Cluster, Kachina Doll Cluster or Phi Cassiopeiae Cluster) [2] is an open star cluster in the …

2023年12月10日 · The Owl Cluster (NGC 457) is a bright open star cluster located approximately 7,922 light-years away in the constellation Cassiopeia. With an apparent magnitude of 6.4, the …

NGC 457 is the brightest open cluster in Cassiopeia and one of the finest objects of its type in the northern sky. At magnitude +6.4, it's just beyond naked-eye visibility but easily seen with …

2024年12月24日 · NGC 457 is the open cluster highlighted in this image. It is about 7,900 light years away and its age is estimated to be 21 million years. It is known as the Owl cluster, the …

2022年9月12日 · NGC 457, popularly known as the Owl Cluster, or ET Cluster, is an outstanding open cluster that’s rated by the majority of observers as the best in Cassiopeia, despite some …

2022年1月29日 · NGC 457 is an open star cluster in the constellation of Cassiopeia. It’s best viewed in autumn through early winter. The cluster, also known as the Owl Cluster, makes its …

Find NGC 457 in the sky. NGC 457 is an open cluster within our own Milky Way galaxy. It is over 7,900 light years from Earth, so the photons from it reaching your eye in a telescope left that …

2024年9月29日 · NGC 457 (also designated Caldwell 13, and known as the Dragonfly Cluster, E.T. Cluster, Owl Cluster, Kachina Doll Cluster or Phi Cassiopeiae Cluster) is an open star …

NGC 457 (also known as the Owl Cluster, the ET Cluster, or Caldwell 13) is an open star cluster in the constellation Cassiopeia. It was discovered by Friedrich Wilhelm Herschel in 1787. It …

NGC 457 is a bright, galactic star cluster in the star-rich areas of the Cassiopeia Milky Way. It is an abundantly dispersed group of star points, with an apparent diameter of one to two dozen …