SOLAR OBSERVATIONS

The images are made automatically with a fixed, gentle rule: uneven illumination and most of the limb darkening are removed, and the brightness is shown on a linear scale (no sharpening); prominences get their own scale outside the limb. Frames are ordered by sharpness (seeing); frames without the Sun (darks, bias) come last. Method →

2025/20250416_bto · BTO · 2 frames · 42.9 MB · 08:43:58–08:45:50 UT