In this final part of the NGC 6744 tutorial, Telescope Live tutor Nik Szymanek completes the image processing workflow by applying cosmetic corrections and color refinements in Affinity Photo. Key steps include:
Combining Luminance and RGB for LRGB Processing:
- Convert the luminance image to a 16-bit RGB file and merge it with the RGB image for enhanced detail.
- Flatten the image and export it as a high-quality TIFF file.
Gradient Removal and Star Integration:
- Extract stars using PixInsight’s Star Exterminator and process them separately.
- Use Graxpert AI for automatic background gradient removal before reintroducing stars.
Final Color and Detail Enhancements:
- Apply Tone Mapping for subtle contrast boosts in the galaxy without affecting the background.
- Use Selective Color and Clarity tools to refine spiral arm structures and highlight Hα regions.
This final stage brings out the full depth and color of NGC 6744, wrapping up a comprehensive multi-software workflow.