By Mario Rana | 2026-01-20
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Solar Activity
On 01/20/2026 10:13 am by Jim Militello | Tucson, Arizona USA
Hydrogen-alpha image of the Sun showing numerous sunspots, active regions 4341, 4342, 4349, filaments, and prominence.
Coronado SolarMax 90 Ha solar telescope, ZWO ASI183mm video camera.
The image is a stack of 30 video frames processed with Autostakkert, Registax, Photoshop.
