By Lynzie Flynn | 2025-05-02
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Solar Activity
On 05/14/2025 01:57 pm by Jim Militello | Tucson, Arizona USA
Hydrogen alpha image of the Sun showing active region 4087 with a large sunspot. Also a nice prominence and some filaments.
Coronado SolarMax 90 Ha solar telescope, ZWO ASI183mm video camera.
The image is a stack of 40 video frames processed with Autostakkert, Registax, Photoshop.
