In this tutorial series, Telescope Live Co-Founder Alexander Curry explores GIMP, a free and powerful image editor, as an alternative to paid software like Photoshop and Affinity Photo. He demonstrates how GIMP can be used alongside SIRIL to enhance astrophotography images. Key topics covered include:

GIMP Interface and Essential Tools:
- Navigate the workspace, customize dockable dialogues, and understand layer management.
- Explore color correction, histogram adjustments, and selection tools.

Integrating GIMP with SIRIL:
- Perform initial stacking, star removal, and background calibration in SIRIL.
- Use GIMP for color balancing, noise reduction, and selective enhancements.

Final Adjustments and Star Recomposition:
- Reintegrate stars, refine contrast, and apply sharpening filters.
- Utilize GIMP’s built-in noise reduction and color grading tools for finishing touches.

This tutorial provides an accessible yet powerful approach to astrophotography editing using free software.