The Triangulum Galaxy (M33) is a member of the Local Group of galaxies that includes the Milky Way, the Andromeda Galaxy (M31), and over fifty other galaxies that are bound together gravitationally. M33 is somewhat smaller than the Milky Way and M31, and at nearly 3 million light years away is more distant than M31 (about 2.5 million light years). Under clear dark skies, M33 can sometimes be seen without a telescope as a dim patch of light about twice as wide as a full moon, making it the most distant object that can be seen with the naked eye.
To create this image, I combined 73 3-minute exposures on a Canon 6D camera connected to a Takahashi FSQ-106 telescope at f/5.