By Mario Rana | 2026-03-17
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Solar Activity
On 03/17/2026 11:47 am by Jim Militello | Tucson, Arizona USA
Hydrogen-alpha image of the Sun with active region 4392 in the center, some nice prominence, and filaments.
Coronado MaxScope 90 Ha solar telescope, ZWO ASI183mm video camera.
The image is a stack of 30 video frames processed with Autostakkert, Registax, Photoshop.
