NGC 891 (also known as Caldwell 23 and Sliver Galaxy) is an edge-on unbarred spiral galaxy about 30 million light-years away in the constellation Andromeda. The galaxy is a member of the NGC 1023 group of galaxies in the Local Supercluster. It has an H II nucleus.
NGC 891 looks as the Milky Way would look like when viewed edge-on and in fact both galaxies are considered very similar in terms of luminosity and size.
NGC 891
NGC 891 (also known as Caldwell 23) 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. The galaxy is a member of the NGC 1023 group of galaxies in the Local Supercluster. It has an H II nucleus.
Photographed with the CPC 9,25″ reflector telescope and Nikon D800 camera in Åva, November 2015. Exposure was 4 * 90s. at ISO 800..
NGC 891
NGC 891 (also known as Caldwell 23 and Sliver Galaxy) is an edge-on unbarred spiral galaxy about 30 million light-years away in the constellation Andromeda. The galaxy is a member of the NGC 1023 group of galaxies in the Local Supercluster. It has an H II nucleus.
NGC 891 looks as the Milky Way would look like when viewed edge-on and in fact both galaxies are considered very similar in terms of luminosity and size.
Photographed with the APO107 refractor telescope and the Atik 360EX CCD camera from Stuvsta in January 2019. Exposure was approx. 17 min each of RGB, and the guide error was less than 10″.
NGC 891
NGC 891 (also known as Caldwell 23 and Sliver Galaxy) is an edge-on unbarred spiral galaxy about 30 million light-years away in the constellation Andromeda. The galaxy is a member of the NGC 1023 group of galaxies in the Local Supercluster. It has an H II nucleus.
NGC 891 looks as the Milky Way would look like when viewed edge-on and in fact both galaxies are considered very similar in terms of luminosity and size.
Photographed with the APO107 refractor telescope and the Atik 360EX CCD camera from Stuvsta in January 2019. Exposure was approx. 17 min each of RGB, and the guide error was less than 10″.
NGC 891, Silver Galaxy
Photographed with the RC8″ reflector telescope and ASI 2600MC CMOS color camera in Stuvsta, January 3rd, 2025. Exposure was 30 * 3 min with HEUIB filter and bin 2×2. There was no moon and the temperature was -10 centigrade. Postprocessing in Pixinsight and Photoshop.
NGC 891, Silver Galaxy
Photographed with the RC8″ reflector telescope and ASI 2600MC CMOS color camera in Stuvsta, January 3rd, 2025. Exposure was 30 * 3 min with HEUIB filter and bin 2×2. There was no moon and the temperature was -10 centigrade. Postprocessing in Pixinsight and Photoshop.