Dolphin Nebula (Sh2-308) (KiwiAstro)

Celestial hemisphere: Southern · Constellation: Canis Major (CMa) · Contains: 16 omi01 CMa · PGC 2816556 · PGC 3098600 · PGC 76182 · PGC 76202 · PGC 76207 · PGC 76232 · PGC 76246 · PGC 76250 · PGC 76256 · PGC 76265 · PGC 76266 · PGC 76274 · PGC 76283 · PGC 76284 · PGC 76285 · PGC 76286 · PGC 86006 · Sh2-308 · The star ο1CMa

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Dolphin Nebula (Sh2-308)

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Dolphin Nebula (Sh2-308)

Over several nights gathered light frames in order to bring out this very faint nebula located at 5200 light years towards the constellation of Canis Major. This is a mix of RGB, O3 (UHC filter) and Ha. One of the most difficult objects to process. The RGB with only UV/IR filter showed the overall form and great stars while the UHC filter really brought out the body and colours and the HA filter brought out the red which is visible through the upper mid section of the Nebula. Processed in Pixinsight using NBRGB (HA Red channel, UHC - blue & green channels for O3, together with the RGB frames).

Could have pushed hard to reduce dot stars with Photoshop "dust & scratches" but not happy with effect it is giving so have left as is.

Unsure if can bring out more from this with an OSC, perhaps better with a mono camera (?)....

Version B: thanks to the kind offer of assistance by Harold Freckhaus (see version B description for details of enhancements made by Harold)

Original
Final
B

B

Description: Original version enhanced with the kind offer of assistance by Harold Freckhaus using RawTherapee and PhotoShop. Enhancements to Contrast / luminosity / Tones / Vibrance / Saturation. Many thanks Harold!

Uploaded: ...

Imaged with APT

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Status	Advanced success
Started	...
Astrometry.net job	3585219
PixInsight job	YVDJ1Q8TSG1FTOS9XPRRW7WB6GBU8QEJ
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	06h54m27s.76
RA (top/left)	06h52m32s.94
RA (top/right)	06h52m07s.27
RA (bottom/right)	06h56m24s.48
RA (bottom/left)	06h56m47s.91

Dec (center)	-23°55′12″.3
Dec (top/left)	-23°19′44″.10
Dec (top/right)	-24°25′44″.3
Dec (bottom/right)	-24°30′39″.3
Dec (bottom/left)	-23°24′42″.1

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Dolphin Nebula (Sh2-308)

Dolphin Nebula (Sh2-308)

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Dolphin Nebula (Sh2-308)

Dolphin Nebula (Sh2-308)

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