Sh2-155 - The Cave Nebula (John Dziuba)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: HD216425 · HD216532 · HD216629 · HD216658 · HD216711 · HD216898 · HD217035 · HD217061 · HD217086 · HD217463 · HD217657 · HD217966 · LBN 524 · LBN 527 · LBN 529 · LDN 1215 · LDN 1216 · LDN 1218 · PK110+01.1 · Sh2-155

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Sh2-155 - The Cave Nebula

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Sh2-155 - The Cave Nebula

Located roughly 2,400 light years from Earth, Sh2-155 is located in the Cepheus constellation. It is a diffuse nebula embedded in an area of bright Ha emission nebulae. It is also surrounded by several dark and reflection nebulae. Although it does not look like a cave to me, it is thought the name was chosen due to the arcing nebulosity that through early instruments looked like the opening to a cave. To confuse matters there is another object in Cepheus, Ced201/VdB152, that is also known as the cave nebula.

I chose to go with a pure LRGB image to showcase the natural beauty of the region. The signal is exaggerated for visual effect, but I tried to stay true to the natural color pallet.

It has been a splendid run of dark skies and optimal seeing conditions at SRO over the past few weeks. Most of these frames were captured in sub arc-second seeing conditions with the moon below the horizon which enabled me to resolve a lot of the fine detail.

I hope you like it.

CS

Fine Art Astrophotography
Takahashi Refractors
Sharpless2 Objects
Dark Nebula
ASI 6200 MM Pro
GHS Made a Substantial Difference
Southern Hemisphere Astro

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Status	Advanced success
Started	...
Astrometry.net job	8483451
PixInsight job	C51PE6OOR5VFD7VM65I6IH7GX128IGMJ
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	22h56m58s.915
RA (top/left)	22h50m14s.532
RA (top/right)	23h03m40s.710
RA (bottom/right)	23h03m58s.831
RA (bottom/left)	22h50m00s.770

Dec (center)	+62°25′32″.97
Dec (top/left)	+61°49′56″.18
Dec (top/right)	+61°49′36″.56
Dec (bottom/right)	+62°59′53″.72
Dec (bottom/left)	+63°00′15″.44

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Sh2-155 - The Cave Nebula

Sh2-155 - The Cave Nebula

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Sh2-155 - The Cave Nebula

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