By Jean Ricigliano | 2025-06-16
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Solar Activity
On 06/16/2025 09:56 am by Jim Militello | Tucson, Arizona USA
Hydrogen alpha image of the Sun featuring active region 4114 with a large sunspot. Also some filaments and prominence.
Coronado SolarMax 90 Ha solar telescope, ZWO ASI183mm video camera.
The image is a stack of 50 video frames processed with Autostakkert, Registax, Photoshop.
