sun spectrum Ha prom
Taken by John paladini on June 15, 2018 @
putnam NY
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Camera Used: Unavailable Unavailable Exposure Time: Unavailable Aperture: Unavailable ISO: Unavailable Date Taken: Unavailable |
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Details:
first attempt to view prom in solar spectroscope by opening slit in same manner as Higgins in 1868
Photographer's website:
No URL provided.
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