spectrohelioscope
noun
spec·tro·he·lio·scope
ˌspek-trō-ˈhē-lē-ə-ˌskōp 
2
: an instrument similar to a spectroheliograph used for visual as distinguished from photographic observations
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“Spectrohelioscope.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/spectrohelioscope. Accessed 15 Dec. 2024.
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