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At the lower right of this image is the Tulip Nebula, or Sharpless 101, located roughly midway between the middle star of the Cygnus cross (Sadr) and the bottom star of the cross (Albireo). This is a classic emission nebula with a hot center, glowing blue from ionized oxygen, and a slightly less energetic outer part colored orange/gold/green from ionized hydrogen and sulfur. The nebulosity on the left side of the frame is catalogued as LBN 171. The small clutch of bright stars at the lower left is open cluster Teutsch 8. This is a 9-hour exposure with 3 hours each of S, H, and O.