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SH2-155 - The Cave Nebula in SHO w RGB Stars

The Cave Nebula (Caldwell 9, Sh2-155) is a diffuse emission nebula within a larger nebula complex that includes a reflection nebula, and dark nebula. This deep-sky object is located in the constellation Cepheus and lies roughly 2,400 light-years from Earth.

 

This was imaged over the past few weeks from my rig at Starfront. I believe this is the first time I shot it.

 

I haven't done a SHO color palette in a while. I felt this palette really brought out the OIII blue vs the others that were primarily red.

 

Total Integration: 26 hours 15 mins

 

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Uploaded on August 25, 2025