Solar Flares
Taken by Alfred on December 5, 2025 @
Singapore
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Camera Used: Unavailable Unavailable
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Date Taken: 2025:12:05 16:39:06
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Details:
5Dec25, 0210UTC. A C4 flare erupted from AR 4299, Captured in Calcium-K wavelength the image shows the concentration of immense magnetic fields around the AR. Attached photos are taken using a SHG700 heliospectroscope + 90 refactor (for #HAlpha full disk at the upper #Chromosphere), a 150mm refractor with narrow-band Calcium-K filter system (for activities in lower chromosphere) and a 120mm refractor with WL Herschel solar wedge (for activities on the #SolarSurface). There was no flares from AR4294-96-98, the largest SunspotComplex this decade. It covers a stretch of about 1/3 of the Sun's diameter (464,3000km or about 36 times the earth's diameter), making it visible to the naked eyes. The comparison of the Calcium-K versus White Light close-up images shows the very different environment in the Chromosphere and Solar Surface. This region is worth watching because the XFlare forecast is 25%
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