Sh2-231, Sh2-232, Sh2-233 and and Sh2-235 in Auriga (Göran Nilsson)

Celestial hemisphere: Northern · Constellation: Auriga (Aur) · Contains: LBN 802 · LBN 803 · LBN 805 · LBN 808 · LDN 1525 · PK173+02.1 · PK173+03.1 · Sh2-231 · Sh2-232 · Sh2-233 · Sh2-235

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Sh2-231, Sh2-232, Sh2-233 and and Sh2-235 in Auriga

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Sh2-231, Sh2-232, Sh2-233 and and Sh2-235 in Auriga

Here is a reprocessed data-set I collected with my dual-Esprit rig back in November 2019. I now made a starless version (Star Xterminator in PS), stretched the nebulosity and a few other tweaks. Then I brought the stars back while suppressing their size with a curve in PS. The result is a brighter image with much more visible nebulosity than in my previous attempt to process the data.

These Sharpless objects make up a complex of HII regions in the Perseus arm in the outskirts of our galaxy. Centrally in Sh-232 is the small planetary nebula PK173+03.1 I notice that the Astrobin annotation places Sh2-233 slightly in the wrong place so its coordinates probably need an update in the system (I doubt that the nebula has moved since Sharpless made his catalogue).

I collected RGB with the Esprit 150 and ASI071 (0.79x TS reduser) and Ha with the Esprit 100 and ASI1600MM. 39 x 10 min of RGB and 51 x 10 min of Ha.

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Description: Reduced saturation + a few adjustments

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Status	Advanced success
Started	...
Astrometry.net job	5292500
PixInsight job	GQDS5H8EN87O2OC9ZMVNCT9L4VCZ1Z37
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h41m33s.50
RA (top/left)	05h44m19s.82
RA (top/right)	05h37m05s.95
RA (bottom/right)	05h38m49s.86
RA (bottom/left)	05h46m00s.80

Dec (center)	+36°03′08″.9
Dec (top/left)	+36°48′10″.8
Dec (top/right)	+36°18′45″.1
Dec (bottom/right)	+35°17′52″.4
Dec (bottom/left)	+35°47′13″.1

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Sh2-231, Sh2-232, Sh2-233 and and Sh2-235 in Auriga

Sh2-231, Sh2-232, Sh2-233 and and Sh2-235 in Auriga

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Image Index:

Contribution Index (beta):

Sh2-231, Sh2-232, Sh2-233 and and Sh2-235 in Auriga

Sh2-231, Sh2-232, Sh2-233 and and Sh2-235 in Auriga

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