The Eastern Veil Nebula (HaOiiiRGB) (lefty7283)

The Eastern Veil Nebula (HaOiiiRGB)

Link: https://www.flickr.com/photos/leftysastrophotography/48435308061

Link to a 16x9 crop: https://i.imgur.com/F1g31nX.jpg

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**[PixInsight Processing](https://i.imgur.com/u756okr.png):**

* BatchPreProcessing

* SubframeSelector

* StarAlignment

* Blink

* ImageIntegration

* DrizzleIntegration (2X, VarK 1.5)

* DynamicCrop

* DynamicBackgroundExtraction 2X

* **RGB Processing:**

* LinearFit to Green

* ChannelCombination

* BackgroundNeutralization

* ColorCalibration

* HSVRepair

* ArcsinhStretch

* HistogramTransformation

* Extract L > LRGBCombination for chrominance noise reduction

* **Narrowband Processing:**

* Deconvolution (With mask to only deconvolve the nebula. Used StarNet++ to create a star mask to add back in the original stars over the deconvolved ones. Star mask adjusted with binarize, convolution, and MorphologicalTransformation)

* TVG/MMT Noise reduction per channel (Jon Rista method)

* PixelMath to combine into color image (Pure HOO Combination)

* DynamicBackgroundExtraction

* ArcsinhStretch

* ACDNR

* HistogramTransformation

* Several [Curve](https://i.imgur.com/o5n5Id8.jpg)Transformations for lightness, hue, and saturation

* Extract L > LRGBCombination for chrominance noise reduction

* LocalHistogramEqualization

* CurvesTransformation for lightness, hue, and saturation

* StarMask > Convolution > MorphologicalTransformation to create star mask (took a LOT of tweaking)

* PixelMath to add in RGB stars: iif($T>.21, RGB, $T*.5+RGB*.5)

* MultiscaleLinearTransform noise reduction (with same star mask applied)

* CurvesTransformation for star saturation (with new ADVStarMask mask)

* HDRMultiscaleTransform

* CurvesTransformations for lightness and saturation

* MorphologicalTransformaion to reduce star sizes

* CloneStamp out a few highly red saturated stars (They looked unnaturally red)

* Annotation

* Resample to 85%

/r/astrophotography
ZWO ASI1600MM/QHY163M
Suburban Astrophotography

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Status	Advanced success
Started	...
Astrometry.net job	2834907
PixInsight job	JW2IBWHO4XTRG13699G9FYFFD6Y5IQFJ
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	20h56m11s.243
RA (top/left)	20h59m40s.277
RA (top/right)	20h58m05s.991
RA (bottom/right)	20h52m39s.477
RA (bottom/left)	20h54m18s.641

Dec (center)	+31°27′21″.85
Dec (top/left)	+30°47′45″.93
Dec (top/right)	+32°21′49″.64
Dec (bottom/right)	+32°06′34″.90
Dec (bottom/left)	+30°32′45″.82

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