This is the Cocoon Nebula or IC5146. Its located just above Cygnus the swan right in the middle of the Milky-way, our own galaxy, hence there are thousands of stars in the image, everywhere. There is also a black inky stream following the Cocoon Nebula. To me it looks like its eating its way through the star field.
This is a HA, RGB image where the HA is used to enhance the RED channel and as the Luminance channel etc...