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The "heart nebula" IC 1805

© 2017 Klaus Brasch

The Heart Nebula, IC 1805, Sharpless 2-190, which lies some 7500 light years away from Earth in the Perseus Arm of our Galaxy in the constellation Cassiopeia. At magnitude around 14, it is not readily visible in amateur telescopes. This image was taken over several nights with an AP-155 refractor at f/5.2 through an IDAS LPS V4 filter. It is a composite some 10 x 3-5 minute exposures shot with a modified Canon 6D at ISO 3200-6400 under very dark skies.






The following was retrieved from Wikipedia, the free encyclopedia, at https://en.wikipedia.org/wiki/Heart_Nebula on October 28, 2017

The Heart Nebula

The Heart Nebula, IC 1805, Sharpless 2-190, lies some 7500 light years away from Earth and is located in the Perseus Arm of the Galaxy in the constellation Cassiopeia. This is an emission nebula showing glowing ionized hydrogen gas and darker dust lanes.

The very brightest part of this nebula (the knot at the western edge) is separately classified as NGC 896, because it was the first part of this nebula to be discovered.

The nebula's intense red output and its configuration are driven by the radiation emanating from a small group of stars near the nebula's center. This open cluster of stars known as Melotte 15 contains a few bright stars nearly 50 times the mass of our Sun, and many more dim stars that are only a fraction of our Sun's mass.


The license terms of this written work from Wikipedia may be found at https://creativecommons.org/licenses/by-sa/3.0/






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