Interesting links
Astronomy

Image processing:

Siril:

• https://www.youtube.com/... (SyQon Starless Zenith, Deep Space Astro) NEW February 2026
• https://www.youtube.com/... (New Drizzle Function in Siril 1.4, Deep Space Astro) NEW February 2026
• https://siril.org/ ... (Brand-New Star Removal Script Zenith, Siril) NEW February 2026
• https://siril.org/ ... (Mosaics, Siril) NEW February 2026
• https://www.youtube.com/... (Updated Aberration Remover 2.0 Script, Deep Space Astro) NEW January 2026
• https://www.youtube.com/... (A New Linear-Stage Denoising Engine for Siril, Deep Space Astro) NEW January 2026
• https://www.youtube.com/... (How to Stack with Siril Lesson 1, Cosmic Curiosity) NEW January 2026
• https://www.youtube.com/... (Siril Generalized Hyperbolic Stretch Lesson 2, Cosmic Curiosity) NEW January 2026
• https://www.youtube.com/... (Siril Color Callibration Lesson 3, Cosmic Curiosity) NEW January 2026
• https://www.youtube.com/... (Siril Background Removal Lesson 4, Cosmic Curiosity) NEW January 2026
• https://www.youtube.com/... (My Full Siril Workflow, Cosmic Curiosity) NEW December 2025
• https://www.youtube.com/... (How to process galaxies with the latest in free software, Nebula Photos) NEW December 2025
• https://www.youtube.com/... (Tutorial with Free Software Siril & Gimp, Deep Sky Detail) NEW December 2025
• https://www.youtube.com/... (Fix Ugly Stars in Siril, Cosmic Curiosity) NEW September 2025
• https://siril.org/ ... (Sirilic)
• https://www.youtube.com/ ... (Siril tutorials, Deep Space Astro)
• https://www.youtube.com/ ... (Using Deconvolution to Improve the Resolution of Deep-Sky Images in Siril, Deep Space Astro)
• https://www.youtube.com/ ... (I had to process 967 sub frames for this, Deep Sky Detail)
• https://www.youtube.com/ ... (The Best Free Astro Software just got even BETTER, Nebula Photos)
• https://siril.org/ (Siril, 32-bit Astronomical Image Processing Tool)
• https://free-astro.org/ ... (Free Astro: Siril, free image processing software)
• http://astrosurf.com/ ... (IRIS: 16-bit image processing program, Christian Buil)

Gimp:

• https://www.youtube.com/ ... (Processing The Rosette Nebula in GIMP, AstroPilot)
• https://pbleic.medium.com/ ... (Star Reduction in GIMP, Medium)
• https://logosbynick.com/ ... (How To Replace A Color In GIMP, Logos by Nick)
• https://www.youtube.com/ ... (I had to process 967 sub frames for this, Deep Sky Detail)
• https://www.youtube.com/ ... (GIMP 2.10 Basics: Complete Overview Tutorial for Beginners, Davies Media Design)
• https://www.gimp.org/ (32-bit image post processing, GIMP)

Fitswork:

• http://www.fitswork.de/ (German image processing program, Fitswork)
• http://astrofotografie.hohmann-edv.de/ ... (Help for Fitswork, in German, use Google translator if needed)

AstroImageJ:

• https://imagej.net/ij/ (32-bit image editor/analyze with a lot of plugins for astronomy, ImageJ)

DSS:

• http://deepskystacker.free.fr/ ... (DSS: Easy to use preprocessing program)

Other / General:

• https://www.astroimagingtoolbox.com/ ... (Best PC for Astrophotography, Astro Imaging Toolbox) NEW February 2026
• https://www.astroworldcreations.com/ ... (Mastering Flat Frames, AstroWorldcCeations) NEW December 2025
• https://www.youtube.com/ ... (NoiseXterminator v3 is HERE and it's amazing, vs GraXpert, Linear vs Stretched data, The Lazy Geek) NEW December 2025
• https://www.youtube.com/ ... (How To Do High Resolution Planetary Astrophotograhy, Damian Peach)
• https://www.youtube.com/ ... (GraXpert astronomical background extraction, VisibleDark)
• https://pscolour.eu/ ... (The system of ideal colours, Pehr Sällström)
• https://youtu.be/ ... (Astrophotography Stacking SHOWDOWN, Nebula Photos)
• https://greatattractor. github.io/ ... (ImPPG, Image Post-Processor, Great attractor GitHub)
• http://www.hnsky.org/ ... (Astrometric Stacking Program, HNSKY)
• https://pixinsight.com/ (Astronomy photo processing tool, PixInsight)
• http://www.startools.org/ (New software with modern technology, StarTools)
• http://www.astronomie.be/ ... (Planetary image processing program, Registax)
• https://iraf-community.github.io/ (Professional image processing program, IRAF)
• https://youtu.be/ ... (Astrophotography Stacking Showdown, Nebula Photos)