AR2790 in CaK & 395nm
Taken by Martin Wise on December 7, 2020 @
Trenton, Florida
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Camera Used: Unavailable Unavailable
Exposure Time: Unavailable
Aperture: Unavailable
ISO: Unavailable
Date Taken: 2020:12:07 17:38:29
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Details:
AR2790 in CaK & 395nm, so close yet so far, showing the difference of the photosphere to chromosphere at nearly the same wavelength but only difference is the brightness of photosphere due to looser bandpass (2.4A vs 70A).
Photographer's website:
https://www.astrobin.com/users/MalVeauX/
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