By David Cox | 2025-06-12
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Solar Activity
On 06/13/2025 10:16 am by Jim Militello | Tucson, Arizona USA
Hydrogen alpha image of the Sun showing numerous active regions, sunspots, filaments, and a nice prominence.
Coronado SolarMax 90 Ha solar telescope, ZWO ASI183mm video camera.
The image is a stack of 40 video frames processed with Autostakkert, Registax, Photoshop.
