By Mario Rana | 2026-02-05
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Sunspot 4366 in Calcium K
On 02/04/2026 02:45 pm by Anthony Faulkner | Tucson, AZ.
Sunspot 4366 takes center stage in Calcium K! A bright plage area surrounds the giant sunspot and magnetic fields can be seen across the solar disk.
Celestron AVX mount
Lunt 80mm universal telescope
custom Calcium K filter
ZWO asi533 non-cooled camera
Sharpcap
Autostakkert
IMPPG
Affinity Photo
