NEW EDITING: IC 1805 - ZOOM IN THE HEART NEBULA (Emanuele La Barbera)

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

NEW EDITING: IC 1805 - ZOOM IN THE HEART NEBULA, Emanuele La Barbera

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NEW EDITING: IC 1805 - ZOOM IN THE HEART NEBULA

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NEW EDITING: IC 1805 - ZOOM IN THE HEART NEBULA

SH2-190, better known as the Heart Nebula, is a very large H-II region, in association with an open cluster known as IC 1805 or Melotte 15, visible in the constellation of Cassiopeia.
It's a very extensive star-forming region, whose distance is estimated at 7500 light years from us; its main feature is the presence of two large apparently empty areas, of different sizes, which make the nebula similar to a "heart". Inside there is a system of small, poorly concentrated open clusters, responsible for the ionization of the nebula. The most notable of these is Melotte 15, which contains some stars about 50 times as massive as the Sun, plus others smaller and a microquasar ejected millions of years ago.
This image is a false color known as Hubble Palette: a false color combination, patented with the Hubble Space Telescope, which is designed to map and contrast the distribution of ionized gases (hydrogen, oxygen and sulfur). In fact, blue is typical of the regions of ionized oxygen O3, green and light yellow is the distribution of ionized hydrogen H-alpha and orange or dark yellow is the ionized sulfur S2.
This photograph is a reworking of shots taken last year. I have tried to highlight the gases and to improve the stellar point.

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NEW EDITING: IC 1805 - ZOOM IN THE HEART NEBULA

NEW EDITING: IC 1805 - ZOOM IN THE HEART NEBULA

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NEW EDITING: IC 1805 - ZOOM IN THE HEART NEBULA

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