Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  56 Cyg  ·  57 Cyg  ·  IC 5070  ·  Pelican Nebula  ·  The star 56Cyg  ·  The star 57Cyg
The Pelican Nebula, lefty7283
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The Pelican Nebula

The Pelican Nebula, lefty7283
Powered byPixInsight

The Pelican Nebula

Equipment

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Acquisition details

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Description

To be honest I think it should be called the 'pair of tits nebula' rather than the pelican, but I doubt we can get the IAU to endorse it. [Was pretty fun messing around with different narrowband palettes on this one](https://i.imgur.com/noVJzI4.png). Captured on October 3rd and 5th, 2020 from a Bortle 6 zone.

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**PixInsight Processing:**

* BatchPreProcessing

* SubframeSelector

* StarAlignment

* [Blink](https://youtu.be/sJeuWZNWImE?t=40)

* ImageIntegration

* DrizzleIntegration (2x, VarK=1.5)

**Linear:**

* DynamicCrop

* AutomaticBackgroundExtraction

* STF applied via HistogramTransformation to bring each channel nonlinear

**Synthetic Luminance:**

* Pixelmath to combine linear Ha, Sii, and Oiii channels into synthetic luminance (mean function)

* [EZ Decon, Denoise, and Soft Stretch](https://darkarchon.internet-box.ch:8443/)

**Combining Channels:**

* PixelMath to make classic SHO to RGB image

* LRGBCombination with synthetic L

* Green partially nuked using SCNR

* Pixelmath to make RGB image using [ForaxX's palette](https://thecoldestnights.com/2020/06/pixinsight-dynamic-narrowband-combinations-with-pixelmath/)

> R= (Oiii^~Oiii)*Sii + ~(Oiii^~Oiii)*Ha

> G= ((Oiii*Ha)^~(Oiii*Ha))*Ha + ~((Oiii*Ha)^~(Oiii*Ha))*Oiii

> B= Oiii

* LRGBCombination with synthetic L

* Pixelmath to blend classic and ForaxX SHO images 50:50

**Nonlinear:**

* shitloads of [Curve](https://i.imgur.com/KMRMe3f.jpg)Transformations to adjust lightness, saturation, contrast, hues, etc

* ColorSaturation to bring out reds

* ACDNR

* DarkStructureEnhance

* LocalHistogramTransformation

* More curves

* EZ Star Reduction

* CloneStamp to remove a few hot pixels (could've tweaked the Oiii rejection settings a bit better)

* Resample to 70%

* Annotation

Comments