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SHO Green Colour Adjustment Tools Using PixInsight and Affinity Photo

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In this tutorial, Co-Founder of Telescope Live, Alexander Curry, demonstrates advanced techniques for adjusting the green tint in SHO images to achieve a balanced and natural-looking color palette. He explores different approaches in PixInsight and Affinity Photo, comparing Narrowband Normalization, PixelMath Dynamic Narrowband Combinations, and Selective Color Adjustments. Key topics include:

Narrowband Normalization in PixInsight (https://pixinsight.com/forum/index.php?threads/new-process-narrowbandnormalization.21441/)
- Install and configure the Narrowband Normalization script to fine-tune the balance between Sulfur II (SII), Hydrogen Alpha (Ha), and Oxygen III (OIII).
- Adjust boost and shadow point sliders to control color dominance while maintaining structural depth.

Mathematical Color Adjustments with PixelMath (https://thecoldestnights.com/2020/06/pixinsight-dynamic-narrowband-combinations-with-pixelmath/)
- Use PixelMath for precise SHO channel adjustments to refine color blending without artificial shifts.
- Apply equations to dynamically modify the green contribution while preserving gold and blue hues.

Refining Colors in Affinity Photo
- Utilize the Selective Color tool to manually tweak greens, cyans, and magentas for a more aesthetically pleasing image.
- Adjust hue and saturation non-destructively to fine-tune the final color output.

This tutorial provides a structured approach to achieving professional SHO color balance, combining automated calibration, mathematical processing, and creative manual refinement.
SPECIFICATIONS
Tutor .......................................................................................................................................................................................................................... Alexander Curry
Parts .......................................................................................................................................................................................................................... 1 video
Duration .......................................................................................................................................................................................................................... 0h 14m
Image type .......................................................................................................................................................................................................................... Deep Sky Imaging
Difficulty level .......................................................................................................................................................................................................................... Intermediate
Category .......................................................................................................................................................................................................................... Techniques
Tier .......................................................................................................................................................................................................................... Premium
Software used .......................................................................................................................................................................................................................... Affinity Photo PixInsight
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PART 1
SHO Green Colour Adjustments
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PART 1

SHO Green Colour Adjustments