IC1805 Heart Nebula (Subaru6)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: IC 1805

IC1805 Heart Nebula

The Heart Nebula, IC 1805, Sh2-190, 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 gas and darker dust lanes. The nebula is formed by plasma of ionized hydrogen and free electrons.

The very brightest part of this nebula (the knot at the right) 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 cluster used to contain a microquasar that was expelled millions of years ago.

At its very center are two stars locked in orbit, accounting for the unique shape of the Nebula. The stars are doomed to fuse together and explode into a supernova in 700 million years. According to researchers, this discovery, reported in Nature in 2015, was the first confirmation that giant white dwarf binaries exist, and the first record of a system with such a fate.

This image was taken with an an F6 100mm Achromatic scope!

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	Distinct awarded users	Total awarded images
Image of the day
Top picks
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	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
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	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
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Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Status	Basic success
Started	...
Astrometry.net job	806259
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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