NGC891 is an edge-on spiral galaxy 30 million light-years away. Spiral galaxies are galaxies with spiral arms extending from a center bulge. The spiral arms are where stars are located and includes much gas and dust, where star formation occurs. Along the equator is a thin light-absorbing path of dust. William Herschell discovered the galaxy on October 6, 1784 and studies by astronomers Gilbert Esquerdo and John Barentine suggest that it might be a barred spiral galaxy, where there is a large bar across the center. It is part of the constellation Andromeda and NGC1023 galaxy group.
This photo shows the galaxy from an edge-on view, as it appears as a thin line. Along the equator of the galaxy is a fine path of dust blocking the light from behind it. The bulge is in the middle section of the galaxy. Based on the photo, NGC891 has a linear size of about 90000 light years.
Franke, Bob. "NGC 891." Focal Pointe Observatory. Accessed 6 Dec. 2010.
Frommert, Hartmut, and Christine Kronberg. "NGC 891." Students for the Exploration and Development of Space. Accessed 6 Dec. 2010. <http://www.seds.org/messier/xtra/ngc/n0891.html>.
Nemiroff, Robert, and Jerry Bonnell. "APOD: February 28, 1997 - Edge-On Spiral Galaxy NGC 891."
NASA. Accessed 6 Dec 2010. <http://apod.nasa.gov/apod/ap970228.html>.
|Right Ascension (J2000)||02:22:36|
|Exposure time per filter||4x300 in clear (C)|
October 28, 2010 (C)