INSIDE THE CALIFORNIA NEBULA - HOO COMPOSITION (Emanuele La Barbera)

Celestial hemisphere: Northern · Constellation: Perseus (Per) · Contains: California Nebula · NGC 1499

INSIDE THE CALIFORNIA NEBULA - HOO COMPOSITION, Emanuele La Barbera

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INSIDE THE CALIFORNIA NEBULA - HOO COMPOSITION

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INSIDE THE CALIFORNIA NEBULA - HOO COMPOSITION

NGC 1499 / Sh2-220, known as the California Nebula, is a visible emission nebula in the constellation Perseus.
1000 light years away from Earth, it was discovered by E.E. Barnard in 1884 and was baptized this way because its shape, portrayed in long exposure photographs, recalls the US state of California. A curious fact is that the nebula transits to the zenith in central California, this is because the latitude corresponds to the declination of the object.
Although it has an apparent size of 2.5 ° in the sky, due to its low surface brilliance, it can only be observed with long exposure photos or through large diameter optics under exceptionally dark skies.
In this second version, only the hydrogen and oxygen signals collected in the various shooting sessions were combined, according to the natural chromatic order. In this way we can appreciate the nebula with natural colors and we can also appreciate the separation between the ionized hydrogen gas (red) with oxygen (blue). However, compared to the version in the Hubble Palette, the mapped gases have less contrast between them and the hydrogen dominant, as in other combinations, is prevalent.
Image obtained with Michele Russo

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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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INSIDE THE CALIFORNIA NEBULA - HOO COMPOSITION

INSIDE THE CALIFORNIA NEBULA - HOO COMPOSITION

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INSIDE THE CALIFORNIA NEBULA - HOO COMPOSITION

INSIDE THE CALIFORNIA NEBULA - HOO COMPOSITION

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