Today's H-alpha #Sun in good seeing conditions at 17:00 UTC.... - Astronomy

JohnBarentine, 28 days ago

Today's H-alpha #Sun in good seeing conditions at 17:00 UTC.

There are not many days on which H-alpha views of the Sun include prominences that visualize the magnetic field lines above active regions particularly well, but today is definitely one of those days.

#Astronomy #SolarAstronomy #Cycle25

A pseudo-coronographic image of the limb of the Sun in the light of hydrogen alpha showing prominences extending above the solar limb in bright red hues. The solar disc is rendered artificially black. The prominence shown here curls around the magnetic field lines of an active region just beyond the solar limb, forming open and closed loops.

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