Solar Journal

Turn your solar telescope photographs into a personal record of the changing Sun. Import a short sequence of photos and explore your annotated solar disc, detected sunspots and the gentle change in brightness from centre to edge. Open a sunspot to see an enlarged crop from your original photograph, or explore nearby spots as a group. Today gives you your latest observation. Discover brings your measurements into context with concise findings and dated NOAA space-weather information. Trends keeps your observing history visible, with the variation between photographs shown alongside each measurement. • Local photo analysis, with original photographs preserved. • Sunspot counts, apparent dark coverage and visual size comparisons. • Date and time corrections, photo removal and optional group tracking. • CSV, JSON, picture and analysis-prompt reports to share when you choose. • Explicit journal archive backup and restore. • A clearly labelled sample journal to explore without a telescope. Five separate photographs are recommended for each session; two or more usable photographs can be saved. Measurements describe what is visible in processed white-light photographs. They are not magnetic measurements or predictions of solar storms. No account, advertising, subscription or AI service is required. Your photographs are not uploaded for analysis. NOAA information requires a connection and is always dated. Solar Journal is independent and is not endorsed by NOAA or telescope manufacturers. Use properly filtered solar observing equipment and follow its manufacturer's safety instructions.