Friday, September 21, 2007

APOD 1.4

In this skyscape picture, the bright, hot, white supergiant star Deneb lies near the top. The picture spans 12 degrees across the northern end of Cygnus the Swan. Cygnus is full of stars and vivid gas clouds along the Milky Way Galaxy. Extending from Deneb to the bottom center of the picture, the Northern Coal Sack Nebula is very dark. The North America Nebula, NGC 7000, and the Pelican Nebula, IC 5070, located in the upper left, produce a red glow. Deneb is the alpha star of Cygnus and is also known for its presence in two seperate asterisms- identifying the top of the Northern Cross and a vertex of of the Summer Triangle. I really liked this picture because could understand where it is located in the sky. We recently learned about the asterism Summer Triangle, which is located in the constellation Aquila meaning Eagle and contains the alpha star Altair.

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