By Hassan Dadashi Arani | 2025-06-16
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Solar Activity
On 06/17/2025 10:03 am by Jim Militello | Tucson, Arizona USA
Hydrogen alpha image of the Sun with sunspot region 4114 still dominating. Some filaments and prominence as well.
Coronado SolarMax 90 Ha solar telescope, ZWO ASI183mm video camera.
The image is a stack of 50 video frames processed with Autostakkert, Registax, Photoshop.
