Sadr Region
{{Short description|Nebula near the star Sadr}}
{{more citations needed|date=January 2019}}
{{Infobox nebula
|name = Sadr Region
|image = Sadr Region rgb.jpg
|caption = This picture shows IC 1318 / gamma Cyg nebula, NGC 6914, IC 1311, NGC 6888 / Crescent nebula in the lower left as well as some other nebulous regions
|credit = Erik Larsen
|type = emission
|type2 =
|epoch = J2000
|subtype =
|class =
|ra = {{RA|20|16|48.0}}{{cite simbad|title=IC 1318|access-date=8 January 2019}}
|dist_ly =
|dist_pc =
|dist_z =
|appmag_v =
|appdia =
|size_v =
|constellation = Cygnus
|radius_ly =
|radius_pc =
|dimensions =
|absmag_v =
|notes =
|names = IC 1318, Gamma Cyg Nebula, Sadr Region
}}
The Sadr Region (also known as IC 1318 or the Gamma Cygni Nebula) is the diffuse emission nebula surrounding Sadr (γ Cygni) 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.
Sadr itself has approximately a magnitude of 2.2. The nebulous regions around the region are also fairly bright.
Image gallery
SRG-eROSITA all-sky image.jpg|On the left image side are the bright North America Nebula (left bright part) with Sadr region (right bright part) in the Cygnus X region, visually interrupted by the Cygnus rift, of the constellation Cygnus, in this X-ray image.
Butterfly Nebula in narrow band Sulfur, Hydrogen and Oxygen Stephan Hamel.jpg|Butterfly Nebula in narrow band image SHO (north is approximately to the left)
Sadr JeffJohnson.jpg|Amateur image of Sadr (center star) surrounded by IC 1318.
See also
References
{{reflist}}
- http://stars.astro.illinois.edu/sow/sadr.html
{{Sh2 objects}}
{{Cygnus (constellation)}}
Category:Cygnus (constellation)
{{nebula-stub}}