NGC891 is rather the opposite of its better known cousin in Andromeda, M31. It's an almost exactly edge on spiral of about 12th magnitude. It is possibly part of a small group of even more obsure galaxies in Triangulum and Perseus and lies about 20 million light years away, but may be as far away as 40 million light years. A cloud of dust, dark against the stars, surrounds the galaxy, which is almost certainly very like our own Milky Way.