By Mac Campbell | 2025-08-20
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Solar Activity
On 08/21/2025 10:11 am by Jim Militello | Tucson, Arizona USA
Hydrogen alpha image of the Sun with some nice prominence, active regions, and filaments.
Coronado SolarMax 90 Ha solar telescope, ZWO ASI183mm video camera.
The image is a stack of 20 video frames processed with Autostakkert, Registax, Photoshop.
