The black smudge on the left image is dust or dirt on the camera lens. Make sure your lens is clean before you shoot, and make sure to use cleaning paper safe for coated lenses. An air blower works well also. The right image is the Andromeda galaxy, a very bright object to your eye, but very difficult to photograph. Even with all that, only the bright nucleus comes out on film.
All galaxies are difficult to shoot, and require very long exposures.
In this image another red light has leaked through, in 2 places actually. Focus is critical , especially in prime focus pictures. It's also especially difficult using a regular 35mm camera, because the stars appear extremly dim when doing prime focus pictures. We highly recommend using some kind of focus screen brightener. Orion Telescope Center sells them for a variety of different cameras.