By Petar Glogoški | 2025-08-12
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Solar Activity
On 08/12/2025 10:10 am by Jim Militello | Tucson, Arizona USA
Hydrogen alpha image of the Sun showing active regions with sunspots and lots of filaments.
Coronado SolarMax 90 Ha solar telescope, ZWO ASI193mm video camera.
The image is a stack of 20 video frames processed with Autostakkert, Registax, Photoshop.
