By Dr Ski | 2020-01-04
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On 01/04/2020 08:20 am by Dr Ski| Valencia Observatory
The sunspot from active region 2755 now has a tiny companion.
The dark areas (sunspots) are cooler than the surrounding chromosphere.
The white areas (plage) are hotter than the surrounding chromosphere.
Canon EOS M100, 90mm Mak-Cas, solar filter
Prime focus at 100X
1/20s@ISO200
Image cropped and enlarged slightly.
