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The spectacular object at the upper right is NGC 6888, also known as the Crescent Nebula. It is a Wolf-Rayet Nebula formed by the stellar wind from Wolf-Rayet star WR 136, the bright star a little to the upper right of the center of the nebula. The Crescent lies about 5,000 light years away and is located in the sky about two degrees from Sadr, the middle star in the five-star "cross" of Cygnus.
This image is a bicolor Ha + OIII combination, with 4 + 5 = 9 hours of exposure.