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NGC 6559 region
NGC 6559, a complex of bright red emission, blue reflection, and dark nebulae, located in Sagittarius one degree east-northeast of M8, and is part of the same molecular cloud as the Lagoon Nebula complex. The area is 45 arcminutes in diameter and is located 5,000 light-years away, the same distance as the Lagoon Nebula. NGC 6559 is the brightest section of red nebulosity at the lower right. Dark nebula B303 is just to the upper left of NGC 6559. B91 is a large dark nebula to the left of center. Cr 367 is a large open cluster also involved in the complex. IC 1274 is a circular red HII region at centre with a rim of blue reflection nebulosity on its southern edge. , Photo by MIGUEL CLARO/SCIENCE PHOTO LIBRARY
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