Swan Nebula

36. Swan Nebula


Messier 17  RA: 18h 20.8'  Dec: -16 11'   Sagittarius (Sgr)

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The Omega Nebula, also known as the Swan Nebula, Checkmark Nebula, and the Horseshoe Nebula (catalogued as Messier 17 or M17 or NGC 6618) is an H II region in the constellation Sagittarius. It was discovered by Philippe Loys de Chéseaux in 1745. Charles Messier catalogued it in 1764. It is by some of the richest starfields of the Milky Way, figuring in the northern two-thirds of Sagittarius.
 

Image Information

Location StarFest 2010
Date Aug 12 2010
Optics AstroTech AT8IN
Filters Baader MPCC
Mount Celestron CGE
Camera Canon/Hutech T1i
ISO 800
Subexposures 9
Exposure Length 240
Guider SBIG ST-4/SV Nighthawk II
 

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All images copyright © 2006-2021, Rick Saunders
Main text descriptions sourced from Wikipaedia.
Sky position information is based on IP geolocation and is therefore approximate.