Research

Helia's design rests on two research reviews. They are working documents for designers rather than user documentation, and they say how far each claim was checked.

• Imaging methods: models, methods and recommendations for solar lucky imaging. It covers the atmosphere, capture, quality metrics, registration, stacking, professional restoration methods, post-processing, solar-specific workflow, machine learning, a comparison of existing tools, the recommended pipeline and how to test it.
• State of the art, October 2026: a refresh of the first review, with a method matrix, proposed milestones and a checklist for keeping it current at each release. It also lists corrections to the first document.

Both mark claims [V] when the source was read during the review and [M] when stated from background knowledge and not re-checked. Treat [M] as probably right, and confirm before relying on it.

The milestones in the Roadmap come from the second review.