Sun CaK
Taken by Stefano Sello on October 23, 2014 @
Pisa-Italy
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Camera Used: Unavailable Unavailable
Exposure Time: Unavailable
Aperture: Unavailable
ISO: Unavailable
Date Taken: 2014:10:23 17:17:48
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Details:
Giant Sunspot AR2192 as seen through a Cak filter.
Using the ruler by Guy Buhry we can estimate an extension of the sunspot core complex of 200000 km and a total extension of the active region of 400000 km, or more than 31 times the Earth's diameter.
Photo details: Solarmax70 CaK solar telescope centered at 393.4 nm (K1R of the line profile for quiet chromosphere), equipped with a Lu130M CCD camera. 14:30 UT.
Photographer's website:
No URL provided.
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