Sunspot group AR 2665
Taken by Randy Shivak on July 7, 2017 @
Prescott Valley, AZ USA
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Camera Used: Unavailable Unavailable
Exposure Time: Unavailable
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Date Taken: 2017:07:07 11:48:17
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Details:
Here you have a good example of why scientists study our sun in various wavelengths of light.
The first image is "off band" in the H-alpha line by minus .7 angstroms which allows deeper
views into the solar atmosphere. Notice how the active filaments are better seen than in the
next image which is "on band" hydrogen alpha at 6562.8 angstroms. This area lies higher in the
solar atmosphere, which is called the chromosphere or "color sphere". Both images were taken with
my Astro-physics 152mm F8 refractor fitted with a Daystar Quantum PE .5 angstrom filter and a ZWO
asi290 MM video camera.
Photographer's website:
No URL provided.
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