1318 is commonly known as the Butterfly Nebula. Its distinctive
shape is due to the band of dark nebula - LDN 889 - that bifurcates
the emmission nebula. Other dark nebula are visible in the image.
B 347 is the small dark nebula at the center of the lower portion
of the Butterfly. B 343 is the dark nebula off-center in the upper
portion. The open star cluster at the upper right is NGC 6910.
nebula is between three and five thousand light years away. Each
lobe is approximately 50 light years in diameter. The bright star
toward the upper right is Sadr (Gamma Cygni). It is not actually
associated with the nebula as it lies much closer to us (a mere
1,800 light years away).