longest solar filament ever!
Taken by Ken Harrison on January 7, 2025 @
Bendigo, Vic Australia
Click photo for larger image
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Details:
While testing the MLAstro SHG (125/125 configuration) I couldn't help but be impressed with the size of the filament currently visible.
I've been observing the Sun for over 25 years - With no loss of eyesight ;) and this must be the longest filament I've seen.
The visible surface of the Sun is about 2.2 million Km in width (half the solar circumference), based on that I think the filament is about 3 million Km in length.!!
Certainly a time of solar maxima....
I hope you also get the chance to image this enormous filament.
(I think the "gaps" you see are due to the Doppler shift where the filament is in strong upward/ downward motion)
Ken
Photographer's website:
https://groups.io/g/Spectroheliograph/messages
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