Noun
(plural filtergrams)
- (astronomy) A photograph of the sun at a particular frequency range (by means of a variable filter)
filtergram
English Wiktionary. Available under CC-BY-SA license.
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"filtergram." YourDictionary, n.d. Web. 16 January 2019. <https://www.yourdictionary.com/filtergram>.
APA Style
filtergram. (n.d.). Retrieved January 16th, 2019, from https://www.yourdictionary.com/filtergram
