By Kevan Hubbard | 2025-12-11
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Solar Activity
On 12/11/2025 10:26 am by Jim Militello | Tucson, Arizona USA
Hydrogen-alpha image of the Sun with sunspot active regions, filaments, and a nice 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.
