The great galaxy in the constellation Andromeda. Visible to the naked eye as light patch, it become a trully magnificent sight in longer exposure. One should not forget the size and distance of this "object" - the light travels more than 2 million years to reach our eyes or the camera!
72 minutes total exposure. Canon 5D camera and William Optics FLT-110 telescope, Losmandy G-11 mount, tracking with autoguider.