M17 (NGC 6618) Swan or Omega Nebula

Type Location r.a. dec. Size Magnitude Distance
Nebula Sagittarius 18h20.8 -16°11' 45'x35' 7 5.5 kly

The Omega Nebula, also known as the Swan Nebula, Checkmark Nebula, Lobster Nebula, and the Horseshoe Nebula (catalogued as Messier 17 or M17 and as NGC 6618) is an H II region in the constellation Sagittarius, at a distance of 5,000 to 6,000 light-years.


More from Wikipedia

Date Telescope Binning Exp Time (s) Special processing Notes
July 26, 2002 Centurion
L 1:1
RGB 3:1
L 3x300
R,G,B 300
LRGB, Max Entropy, DDP