By Petr Horálek | 2025-01-13
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Solar Activity
On 01/13/2025 10:41 am by Jim Militello | Tucson, Arizona USA
Hydrogen alpha image showing AR3959 coming into view on the east limb and AR3947 turning the corner on the west along with some nice filaments and prominence.
Coronado SolarMax 90 Ha solar telescope, ZWO ASI183mm video camera.
The image is a stack of 40 video frames processed with Autostakkert, Registax, Photoshop.
