Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  Bubble Nebula  ·  NGC 7510  ·  NGC 7538  ·  NGC 7635
The Lobster Claw, Bubble, Northern Lagoon in Pure SHO, Andy W
The Lobster Claw, Bubble, Northern Lagoon in Pure SHO
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The Lobster Claw, Bubble, Northern Lagoon in Pure SHO

The Lobster Claw, Bubble, Northern Lagoon in Pure SHO, Andy W
The Lobster Claw, Bubble, Northern Lagoon in Pure SHO
Powered byPixInsight

The Lobster Claw, Bubble, Northern Lagoon in Pure SHO

Equipment

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Acquisition details

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Description

The idea behind this two panel Mosaic in to represent SHO palette with just a minor touch of pulling back the green channel (Ha.)

(All 120 sec Subs)
Upper Frame
Filter  Subs  Hrs        
S2        111   3.7
Ha         61    2.0
O3         96    3.2
TOT     268   8.9

Lower Frame
Filter Subs   Hrs        
S2       144    4.8
Ha         67    2.2
O3       140    4.7
TOT     351  11.7

PixInsight Processing

NonLinear Processing
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DBE - Division -> Subtraction
Linear fit S2, O3 to Ha
Channel Combination
Invert > SCNR on Green to remove Magenta
Color Calibration
Background Neutralization

Mosaic Processing
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Noise Exterminator AI on both images
EZSoftStretch on both images
Used Process from @WindyCityAstro YouTube for Mosaicing
- Register Union Mosaic
- Drop Registered on Originals
- Saved registered for:
- GradientMergeMosaic
- DynamicCrop

Linear Processing SHO 
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AutomaticBackgroundExtraction
SCNR Green Max Neutral 35%
Removed Stars with Starnet++ V2
Curves - Slight S-curve
LocalHistogramEqualization - Kernel Radius = 25
LocalHistogramEqualization - Kernel Radius = 75
LocalHistogramEqualization - Kernel Radius = 125
MultiscaleLinearTransform to sharpen
Added stars back in with PixelMath

Comments

Sky plot

Sky plot

Histogram

The Lobster Claw, Bubble, Northern Lagoon in Pure SHO, Andy W