Wednesday, December 31, 2014
The beautiful mountain landscapes in the Great Smoky Mountains are like no others. Hiking in the Smoky Mountains has always been a family favorite of ours. When we are not there, the mountains are always calling! Therefore, John Muir's quote: "the mountains are calling and I must go" really speaks to us. This photo was taken from the top of Mt. LeConte, the morning after snow fell in the higher elevations.
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tagged with: star nurseries, star clusters, starfields, nebulae, heavens, helix nebula, hrbstslr helixneb, star galaxies, astronomy images, outer space pictures, eso, european southern observatory, vista
Galaxies, Stars and Nebulae series A fantastic colour-composite image of the Helix Nebula (NGC 7293). It was created from images obtained using the Wide Field Imager (WFI), an astronomical camera attached to the 2.2-metre Max-Planck Society/ESO telescope at the La Silla observatory in Chile.
The blue-green glow in the centre of the Helix comes from oxygen atoms shining under effects of the intense ultraviolet radiation of the 120 000 degree Celsius central star and the hot gas.
Further out from the star and beyond the ring of knots, the red colour from hydrogen and nitrogen is more prominent. A careful look at the central part of this object reveals not only the knots, but also many remote galaxies seen right through the thinly spread glowing gas.
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image code: helixneb
ESO/J. Emerson/VISTA www.eso.org
Reproduced under the Creative Commons Attribution 3.0 Unported license.
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