Sh2-157 and NGC-7510 (Joel Shepherd)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: NGC 7510 · PK110-00.1 · Sh2-157

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Sh2-157 and NGC-7510

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Sh2-157 and NGC-7510

Subject: Sh2-157, an emission nebula in Cassiopeia, approximately 11050 light-years distant. The (northern) ring-shaped area is formed by stellar winds from several prominent stars. The bulbous southern area is excited by O-class stars.

Capture notes: Hoowee. This was not easy, but mostly due to human error. My first night of Ha had to be thrown out when I discovered the target was well off-center. When the weather finally cleared, I had to throw out another 90 minutes of O-iii because the nebula slipped below the roofline of our house. The Ha was captured on the last night this year that I could have possibly captured it, due to our reversion to standard time and the encroaching weather. It was tight, but it turned out well in the end.

Processing: Tonemapping of the Ha and O-iii stacks, luminance from the Ha stack with the O-iii tone map added in. Palette is basically HOO, but green has a little bit (20%) of Ha in the mix.

N.I.N.A. Users
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Status	Advanced success
Started	...
Astrometry.net job	1821800
PixInsight job	W6FHSQXYXPO1IM9LGBSG7058R8CGFGWZ
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	23h15m11s.77
RA (top/left)	23h20m55s.33
RA (top/right)	23h19m07s.70
RA (bottom/right)	23h09m16s.53
RA (bottom/left)	23h11m27s.20

Dec (center)	+60°14′06″.9
Dec (top/left)	+59°40′38″.1
Dec (top/right)	+61°00′23″.6
Dec (bottom/right)	+60°46′38″.2
Dec (bottom/left)	+59°27′32″.8

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Sh2-157 and NGC-7510

Sh2-157 and NGC-7510

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Sh2-157 and NGC-7510

Sh2-157 and NGC-7510

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