M76 Little Dumbell O-III H-Alpha and RGB (Jerry Yesavage)

Celestial hemisphere: Northern · Constellation: Perseus (Per) · Contains: Barbell Nebula · Cork Nebula · Little Dumbbell · Little Dumbbell Nebula · M 76 · NGC 650 · NGC 651 · PK130-10.1

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M76 Little Dumbell O-III H-Alpha and RGB

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M76 Little Dumbell O-III H-Alpha and RGB

The previous image I put up did not include the O-III since it seemed to remove detail. I was discussing this a little with Riedl Rudolf and realized there might be a solution combining a couple processing techniques and it worked out, so I am going to detail what I did for future reference.

I took the O-III and added it to the R and B channels using Rob's formulae (72% to the Green and 88% to the Blue). This uses normalized linear images. I tried to do the same with the HA to the Red channel at 100% and the image was blown out.

So what I did was i took the color corrected "Teal" RGB version of this and added in the HA the same was as I add it in for the Sharpless Objects. This means in Photoshop 20-40% of the HA is added to the Red channel and then the HA is also added as a false L.

In any case, this separated the HA signal from the O-III and you can blend in the HA with a slider in PS to make sure the signals are comparable.

HDRM was done separately on the O-III and HA images with different wavelets.

No processing in 3D LUT as this was bright enough.

Original
Final
C

C

Description: Background cleaned

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Status	Advanced success
Started	...
Astrometry.net job	3902345
PixInsight job	DX5Q2VNYRZNSWSPRR7DKC90VQ5BCESOE
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	01h42m19s.56
RA (top/left)	01h43m24s.59
RA (top/right)	01h41m13s.60
RA (bottom/right)	01h41m14s.99
RA (bottom/left)	01h43m25s.40

Dec (center)	+51°34′25″.0
Dec (top/left)	+51°44′39″.7
Dec (top/right)	+51°44′32″.5
Dec (bottom/right)	+51°24′08″.0
Dec (bottom/left)	+51°24′18″.5

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M76 Little Dumbell O-III H-Alpha and RGB

M76 Little Dumbell O-III H-Alpha and RGB

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M76 Little Dumbell O-III H-Alpha and RGB

M76 Little Dumbell O-III H-Alpha and RGB

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