By Peter Lowenstein | 2026-04-22
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Solar Activity
On 04/24/2026 11:08 am by Jim Militello | Tucson, Arizona USA
Hydrogen-alpha image of the Sun with sunspots, active regions, filaments, and prominence.
Coronado MaxScope 90 Ha solar telescope, ZWO ASI183mm video camera.
The image is a stack of 30 video frames processed with Autostakkert, Registax, Photoshop.
