The Crescent Nebula has many names, including the constellation Cygnus the Swan. Among them are NGC 6888, Caldwell 27, Sharpless 2–105, and LBN 203. Whatever you call it, this is an interesting gas mass carved out of the center by the winds of a very hot star called WR 136.
This high wind is beating the slow moving stellar wind that was first created by the star when it became a red giant, the combination produced a vibration in front of us and a pile of gas. see: NGC 6888., it also works with X -rays.
The Crescent is about 5,000 light years old and about 25 light years old. It shines at magnitude 7.4. It seems like a healthy number (under the naked eye); however, the size of the nebula (0.3 ° to 0.2 °) actually cuts off the radiance of the skin. You will begin to see some of the building through an 8-inch telescope. But, of course, it takes an 11-inch tool or more to start working properly.
To obtain NGC 6888, point your telescope 1.2 ° northwest-northwest of the magnitude 4.8 34 Cygni stars. Alternatively, if you want to start with a bright star, point 2.7 ° southwest of the magnitude 2.2 Sadr (Gamma [γ] Cygni).
The northwest side is the brightest, but there is a short line of bright nebulosity on the south side. Large telescopes show a thick nebulous strip running from the far west to the central star. You can easily see WR 136. It shines at 7th magnitude and is located at the NGC 6888. An Oxygen-III filter really helps to take the different parts of this material. This filter increases its overall knowledge by reducing the number of late stars in the Milky Way orbit that travels through Cygnus.
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