Celestial hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  PK110+01.1  ·  Sh2-155  ·  VdB155
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Cave Nebula in HaRGB (Caldwell 9/C9/SH2-155), Mike_Stutters
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Cave Nebula in HaRGB (Caldwell 9/C9/SH2-155)

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Cave Nebula in HaRGB (Caldwell 9/C9/SH2-155), Mike_Stutters
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Cave Nebula in HaRGB (Caldwell 9/C9/SH2-155)

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Description

The Cave Nebula (Caldwell 9, Sh2-155) is a diffuse emission nebula within a larger nebula complex. The region also contains a reflection nebula and dark nebula. My previous image of this object I think better shows the reflection and dark nebula elements.  Bringing in Ha subs however greatly enhances detail in the emission nebula components.

I like the almost 3D appearance of the 'cave mouth'.

This deep-sky object is located in the constellation Cepheus and lies roughly 2,400 light-years from Earth.

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Cave Nebula in HaRGB (Caldwell 9/C9/SH2-155), Mike_Stutters