Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  IC 1795  ·  IC 1805
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Heart Nebula  IC1805 - SH2-190 - LBN654, Albert  Christensen
Heart Nebula  IC1805 - SH2-190 - LBN654
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Heart Nebula IC1805 - SH2-190 - LBN654

Getting plate-solving status, please wait...
Heart Nebula  IC1805 - SH2-190 - LBN654, Albert  Christensen
Heart Nebula  IC1805 - SH2-190 - LBN654
Powered byPixInsight

Heart Nebula IC1805 - SH2-190 - LBN654

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A nice stretch of clear skies and comfortable weather for imaging.  It has been a while since I have imaged the Heart. 

Heart Nebula IC1805, SH2-190, LBN654      
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 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 ionized oxygen and sulfur gasses, responsible for the rich blue and orange colors 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.   (Wikipedia)

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Heart Nebula  IC1805 - SH2-190 - LBN654, Albert  Christensen