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Crescent Nebula (Caldwell27) captured by David Rousseau from an urban location in Québec, Canada using Ha and OIII narrowband filters. The Crescent Nebula (also known as NGC 6888, Caldwell 27, Sharpless 105) is an emission nebula in the constellation Cygnus, about 5000 light-years away from Earth.
English: An image of the emission nebula NGC 6888, also known as the Crescent Nebula, in the constellation Cygnus. This object is approximately 5000 light years distant and 26 light years in diameter and is formed by high velocity stellar wind from the central star WR 136 colliding with gas previously shed from the star.
The Sadr Region (also known as IC 1318 or the Gamma Cygni Nebula) is the diffuse emission nebula surrounding Sadr at the center of Cygnus's cross. The Sadr Region is one of the surrounding nebulous regions; others include the Butterfly Nebula and the Crescent Nebula. It contains many dark nebulae in addition to the emission diffuse nebulae.
Two pairs of stars appear in the nebula; it is larger near the southwestern pair. The open cluster Berkeley 90 is embedded in this large nebula, which measures 30 by 20 arcminutes. [64] Also of note is the Crescent Nebula (NGC 6888), located between Gamma and Eta Cygni, which was formed by the Wolf–Rayet star HD 192163.
WR 136 at the centre of NGC 6888. WR 136 is a Wolf–Rayet star located in the constellation Cygnus.It is in the center of the Crescent Nebula.Its age is estimated to be around 4.7 million years and it is nearing the end of its life.
The Soap Bubble Nebula, Ju 1 (also known as PN G075.5+01.7) is a planetary nebula in the constellation Cygnus, [4] near the Crescent Nebula (NGC 6888). The nebula derives its name from its symmetrical spherical shape which resembles a soap bubble .
NGC 6866 is a young [5] open cluster of stars in the northern constellation Cygnus.It was discovered by German astronomer Caroline Herschel on 23 July 1783. [3] This cluster is located at an estimated distance of 4.35 ± 0.53 thousand light-years from the Sun, [2] and is circling the galactic center with a slight orbital eccentricity of 0.12. [7]
NGC 6819 is an open cluster (commonly known as an "open star cluster") located 7,200 light years away in the Cygnus constellation. It was discovered by Caroline Herschel on 12 May 1784.