IC1805 - Heart Nebula (Maarten Rolefes)

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

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IC1805 - Heart Nebula

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IC1805 - Heart Nebula

This image is shot from Bortle 5 sky using a William Optics Star 71 telescope (348mm at F4.9) on an iOptron CEM26. Camera used is a Starlight Xpress 814 Trius Pro mono using Astrodon S2, HA and O3 filters.

Total of 45 frames x 20 minutes exposure each.
Total exposure is 15Hr.

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The Heart Nebula (also known as the Running dog nebula, IC 1805, Sharpless 2-190) is an emission nebula, 7500 light years away from Earth and located in the Perseus Arm of the Galaxy in the constellation Cassiopeia. It was discovered by William Herschel on 3 November 1787. It displays glowing ionized hydrogen gas and darker dust lanes.

The brightest part of the nebula (a knot at its western edge) is separately classified as NGC 896, because it was the first part of the nebula to be discovered. The nebula's intense red output and its morphology are driven by the radiation emanating from a small group of stars near the nebula's center. This open cluster of stars, known as Collinder 26 or Melotte 15, contains a few bright stars nearly 50 times the mass of the Sun, and many more dim stars that are only a fraction of the Sun's mass.

The Heart Nebula is also made up of ionised oxygen and sulfur gasses, responsible for the rich blue and orange colours seen in narrowband images. The shape of the nebula is driven by stellar winds from the hot stars in its core. The nebula also spans almost 2 degrees in the sky, covering an area four times that of the diameter of the full moon.

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C

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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	6860416
PixInsight job	n/a
PixInsight queue size	n/a
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IC1805 - Heart Nebula

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