Heart Nebula

Designation: IC 1805 / Sh2-190
Hemisphere: Northern
Constellation: Cassiopeia
Distance: 7,500 light years
Object type: Emission nebula


The Heart Nebula is a large emission nebula that lies about 7,500 light years away from Earth, in the constellation of Cassiopeia. It takes its name from its resemblance to a human heart. The prominent red glow is conferred by particles of ionized hydrogen gas powered by a small group of stars near the nebula’s center.

Roughly 2.5 degrees separate the Heart Nebula from another iconic object: the Soul Nebula. The two form the “Heart & Soul” complex and are physically connected by a bridge of gas.


Mount: Sky-watcher HEQ5-Pro
Main Telescope: William Optics ZS73EDii
Main camera: ZWO ASI294MC-Pro
Main camera filter: Optolong L-eXtreme
Guidescope: Svbony SV165
Guide camera: ZWO ASI174MM
Guide camera filter: Astronomik UV/IR cut

Acquisition details

Total integration time: 6 hours
Acquisition: ZWO AsiAir Plus
Processing: PixInsight
Location: Luxembourg

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