SH2-155 The Cave Nebula from the city (Ryan Génier)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: HD216425 · HD216532 · HD216629 · HD216658 · HD216711 · HD216898 · HD217035 · HD217061 · HD217086 · HD217099 · HD217312 · HD217463 · HD217657 · HD217966 · LBN 524 · LBN 527 · LBN 529 · LDN 1215 · LDN 1216 · LDN 1218 · Sh2-155

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SH2-155 The Cave Nebula from the city

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SH2-155 The Cave Nebula from the city

Imaging from the city can be rough, especially when I decide that I would like to try some broadband.

In order to limit the impact of the light pollution, I had my subexposures set to 15s. Stacking this image was a challenge in itself, as I ended up with over 2200 seperate exposures.

I added in a night of Ha as well in order to bring out some of the emission background. Thankfully I did, as the RGB data was not great.

I did half a night of LUM as well (using my UVIR filter), but decided not to use it. The data was not super great, and didn't really add anything to the final image.

Overall, after cropping pretty hard to eliminate the worst of the gradients, I'm fairly happy with how it turned out.

Original
B
Final
C

Celestron RASA

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Status	Advanced success
Started	...
Astrometry.net job	8563203
PixInsight job	HFD55W3AIVE6ZZO4URHH2EC5RBYRMMYZ
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	22h56m59s.37
RA (top/left)	23h04m48s.38
RA (top/right)	22h49m05s.16
RA (bottom/right)	22h49m28s.82
RA (bottom/left)	23h04m34s.80

Dec (center)	+62°34′37″.8
Dec (top/left)	+63°09′39″.6
Dec (top/right)	+63°08′49″.1
Dec (bottom/right)	+61°57′59″.9
Dec (bottom/left)	+61°58′51″.2

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SH2-155 The Cave Nebula from the city

SH2-155 The Cave Nebula from the city

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SH2-155 The Cave Nebula from the city

SH2-155 The Cave Nebula from the city

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