NGC 891 (also known as Caldwell 23, the Silver Sliver Galaxy, and the Outer Limits Galaxy) is an edge-on unbarred spiral galaxy about 30 million light-years away in the constellation Andromeda. It was discovered by William Herschel on October 6, 1784. [3] The galaxy is a member of the NGC 1023 group of galaxies in the Local Supercluster.

2022年6月17日 · NGC 891 is a galaxy in Andromeda. At magnitude 10.8, this target is visible with a telescope as small as 3 inches under excellent skies — but only just.

2012年5月14日 · Visible in the constellation of Andromeda, NGC 891 is located approximately 30 million light-years away from Earth. The NASA/ESA Hubble Space Telescope turned its powerful wide field Advanced Camera for Surveys towards this …

2024年10月7日 · The Silver Sliver Galaxy (NGC 891, Caldwell 23) is an unbarred spiral galaxy located 27.3 million light-years away in the constellation Andromeda. It is also known as the Outer Limits Galaxy.

Explanation: This beautiful cosmic portrait features NGC 891. The spiral galaxy spans about 100 thousand light-years and is seen almost exactly edge-on from our perspective. In fact, about 30 million light-years distant in the constellation Andromeda, NGC 891 looks a lot like our Milky Way .

2023年11月22日 · NGC 891 is an edge-on unbarred spiral galaxy. This type of galaxy lacks a central bar like the one in our own Milky Way galaxy. How big is NGC 891? Its disk is approximately 100,000 light-years in diameter and contains a …

Explanation: Large spiral galaxy NGC 891 spans about 100 thousand light-years and is seen almost exactly edge-on from our perspective. In fact, about 30 million light-years distant in the constellation Andromeda, NGC 891 looks a lot like our Milky Way .

NGC 891 is a Spiral Galaxy located in the constellation of Andromeda in the northern hemisphere. NGC 891's distance from Earth is 31,099,010.61 light years. NGC 891 is called NGC 891 in the New General Catalogue (NGC). This catalogue is a list of deep space objects compiled by John Louis Emil Dreyer in 1888 to update John Herschel's earlier work.

Due to its proximity of 9.6 Mpc and its edge-on orientation (van der Kruit & Searle 1981), NGC 891 is one of the most observed and well-studied galaxies of the Local Universe. One of the reasons that this particular region of interest was extensively observed is because it hosts the supernova SN 1986J, discovered on August 21, 1986.

NGC 891 technical data / Telescope: Newtonian (d=443mm, f=2048mm) / Location: Emberger Alm, Kaernten, Austria / Camera: SBIG ST-10XME with AO-8 and CFW-9 / Exposure: 5 hours (luminance 33x5 min. bin 1...