NoiseXTerminator vs Graxpert: The Real Astrophotography Test

In this video I put NoiseXterminator up against FREE astrophotography tools like Graxpert and Siril. Is the $60 plugin really worth it, or are the free options already good enough for deep sky images? 🤔 If you care about clean nebulosity, star detail, and not turning your images into plastic, this comparison is for you. In this side‑by‑side 2026 test, I compare: astrophotography noise reduction performance: How much faint detail is preserved? The “smoothness vs texture” trade‑off. Real background noise measurements from the same dataset. Where free tools like Graxpert and Siril shine – and where NoiseXterminator still has an edge. You’ll see the Triffid Nebula processed three ways so you can decide for yourself if paid AI tools are actually worth the money. 📌 Video Chapters 00:00 – Why this test matters (and what we’re really measuring) 01:05 – The data and capture details (Triffid Nebula) 02:10 – Baseline: unprocessed noisy stack 03:05 – Siril noise reduction (FREE) 05:10 – GraXpert AI denoise (FREE) 07:25 – NoiseXTerminator workflow (PAID) 09:40 – Side‑by‑side crops and pixel peeping 11:30 – Background noise value comparison chart 13:10 – Smooth vs plasticky: which look is “right”? 15:00 – My honest verdict – who should pay, who can stay free 17:00 – What I’ll use in my own processing from now on 🔧 Useful Links & Resources 🧮 My astrophotography exposure calculator app → https://astroimagery.com/techniques/i... My Astrophotgraphy gear page: https://astroimagery.com/gear/ 📷 More videos on astrophotography processing and post‑processing techniques →    • Image Processing and Editing Techniques   💬 Join the Conversation Which result would YOU choose for your own images – free tools or the paid plugin? Tell me in the comments: Your favorite noise reduction workflow Whether you prefer a smoother or more textured look Any tools you want me to test next (Topaz, other AI denoise, etc.) I read every comment and often use your suggestions for future comparison videos. 🙌 🔔 If You’re New Here On this channel I teach: Deep sky astrophotography processing from start to finish How to get the most out of your data with free and paid software Practical, real‑world tests instead of marketing claims If that sounds useful, consider subscribing so you don’t miss the next comparison. Hashtags #Astrophotography #NoiseReduction #GraXpert #NoiseXTerminator #DeepSky #FreeVsPaid #AstrophotographyProcessing 💓Support this channel: https://shop.astroimagery.com/ https://buymeacoffee.com/astroimagery 💓Follow Me: ✅ Website: https://astroimagery.com ✅ Instagram:   / karl_astroimagery