Editing Cygnus (constellation) (section)

===Molecular clouds===
[[File: NGC7000 North America Nebula.jpg|thumbnail|left|The [[North America Nebula]] (NGC 7000) is one of the most well-known nebulae in Cygnus.]]
[[NGC 6826]], the Blinking Planetary Nebula, is a [[planetary nebula]] with a magnitude of 8.5, 3200 light-years from Earth. It appears to "blink" in the eyepiece of a telescope because its central star is unusually bright{{sfn|Levy|2005|pp=130–131}} (10th magnitude).{{sfn|Ridpath|Tirion|2001|pp=134–137}} When an observer focuses on the star, the nebula appears to fade away.{{sfn|Levy|2005|pp=130–131}} Less than one degree from the Blinking Planetary is the double star 16 Cygni.{{sfn|Ridpath|Tirion|2001|pp=134–137}}

The [[North America Nebula]] (NGC 7000) is one of the most well-known nebulae in Cygnus, because it is visible to the unaided eye under dark skies, as a bright patch in the Milky Way. However, its characteristic shape is only visible in long-exposure photographs – it is difficult to observe in telescopes because of its low [[surface brightness]]. It has low surface brightness because it is so large; at its widest, the North America Nebula is 2 degrees across. Illuminated by a hot embedded star of magnitude 6, NGC 7000 is 1500 light-years from Earth.{{sfn|Ridpath|Tirion|2001|pp=134–137}}

[[File: Veil Nebula 2015-08-15 42 30s-ISO1600 AB 42 136-117-185 CVF.jpg|thumb|upright=1.2|NGC 6992 (Eastern Veil Nebula – center) and NGC 6960 (Western Veil Nebula – upper right) photographed from a dark site]]

To the south of [[Epsilon Cygni]] is the [[Veil Nebula]] (NGC 6960, 6979, 6992, and 6995), a 5,000-year-old [[supernova remnant]] covering approximately 3 degrees of the sky -<ref name="objects" /> it is over 50 light-years long.{{sfn|Ridpath|Tirion|2001|pp=134–137}} Because of its appearance, it is also called the [[Cygnus Loop]].<ref name="objects" /> The Loop is only visible in long-exposure astrophotographs. However, the brightest portion, NGC 6992, is faintly visible in binoculars, and a dimmer portion, NGC 6960, is visible in wide-angle telescopes.{{sfn|Ridpath|Tirion|2001|pp=134–137}}

The [[DR 6 nebula|DR 6 cluster]] is also nicknamed the "Galactic Ghoul" because of the nebula's resemblance to a human face;<ref name="NASA2">{{Cite APOD |title=Spooky Star Forming Region DR 6 |date=2004-11-01|access-date=2008-10-23}}</ref>

[[File: Stars Brewing in Cygnus X.jpg|thumb|left|[[Cygnus-X (star complex)|Cygnus X]], a large region of star-formation in Cygnus]]
The [[Gamma Cygni Nebula]] (IC 1318) includes both bright and dark nebulae in an area of over 4 degrees. [[DWB 87]] is another of the many bright emission nebulae in Cygnus, 7.8 by 4.3 arcminutes. It is in the Gamma Cygni area. Two other emission nebulae include [[Sharpless 2-112]] and [[Sharpless 2-115]]. When viewed in an amateur telescope, Sharpless 2–112 appears to be in a teardrop shape. More of the nebula's eastern portion is visible with an [[O III]] (doubly ionized oxygen) filter. There is an orange star of magnitude 10 nearby and a star of magnitude 9 near the nebula's northwest edge. Further to the northwest, there is a dark rift and another bright patch. The whole nebula measures 15 arcminutes in diameter. Sharpless 2–115 is another emission nebula with a complex pattern of light and dark patches. 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.<ref name="S&T" />

Also of note is the [[Crescent Nebula]] (NGC 6888), located between Gamma and Eta Cygni, which was formed by the [[Wolf–Rayet star]] [[WR 136|HD 192163]].

In recent years, amateur astronomers have made some notable Cygnus discoveries. The "[[Soap bubble nebula]]" (PN G75.5+1.7), near the Crescent nebula, was discovered on a digital image by Dave Jurasevich in 2007.  In 2011, Austrian amateur Matthias Kronberger discovered a planetary nebula ([[Kronberger 61]], now nicknamed "The Soccer Ball") on old survey photos, confirmed recently in images by the Gemini Observatory; both of these are likely too faint to be detected by eye in a small amateur scope.

But a much more obscure and relatively 'tiny' object—one which is readily seen in dark skies by amateur telescopes, under good conditions—is the newly discovered nebula (likely reflection type) associated with the star 4 Cygni (HD 183056): an approximately fan-shaped glowing region of several arcminutes' diameter, to the south and west of the fifth-magnitude star. It was first discovered visually near San Jose, California and publicly reported by amateur astronomer Stephen Waldee in 2007, and was confirmed photographically by Al Howard in 2010. California amateur astronomer Dana Patchick also says he detected it on the Palomar Observatory survey photos in 2005 but had not published it for others to confirm and analyze at the time of Waldee's first official notices and later 2010 paper.

[[Cygnus-X (star complex)|Cygnus X]] is the largest star-forming region in the [[solar neighborhood]] and includes not only some of the [[Most luminous stars|brightest]] and [[List of most massive stars|most massive]] stars known (such as [[Cygnus OB2-12]]), but also [[Cygnus OB2]], a massive [[stellar association]] classified by some authors as a young [[globular cluster]].