The Omega Nebula (also known as M17, the Swan Nebula, and the Lobster Nebula) lies about 5700 light years away in the constellation of Sagittarius. The nebula is found at the edge of a dark gas cloud in which new stars are being born. Optical light, infrared radiation and radio waves are emitted by the nebula. The infrared radiation (green) is emitted by dust clouds warmed by new stars imbedded in the nebula. The optical light (blue) and radio waves (red) are produced when hot, young stars ionize the gas around them. While much of the optical light is blocked by foreground dust clouds, the radio radiation streams on through, allowing us to see all of the hot gas with the Green Bank Telescope (GBT).
Credit: B. Saxton, NRAO/AUI/NSF
Technical Details Telescope: 2MASS; UK Schmidt; GBT Band: I; B; X Date: Mon Jun 13 15:17:48 2005; Mon Jun 13 17:16:22 2005; 2002-00-00 Center: RA: 18:21:12.64, Dec: 16:00:36.61 Field of View: 57 x 53 arcminutes