Sabtu, 21 Juni 2008

Constellations - Cygnus

Cygnus lies in the Milky Way. His brightest stars mark the Northern Cross. Cygnus, with the bright star Deneb in the swan's tail, appears high in the sky summer. The three bright stars Deneb, Vega (in the constellation Lyra) and Altair (in the constellation of Aquila) mark the summer triangle. Altair is about 40 degrees of Deneb and Vega. Albireo, the bright star at the head of Cygnus is an excellent example of a telescope-Double Star. Even with binoculars, you can see that it consists of two stars of different colors, is a very orange the other bluish white. You must look at them.
As Cygnus lies in the Milky Way is full of variable stars (stars, the brightness varies over a certain period) and the number of novae in the boundaries of this constellation - the last was in 1976.
The North American Nebula lies within Cygnus, it is very dark, but reportedly easy to photograph. The fog needs a telescope aperture greater than 6 ".

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