DescriptionActive region in the low photosphere - Fe I 5434 Å.png
English: This is an image of solar chromosphere covering 166 Mm x 166 Mm taken in the continuum near the Fe I 5434 Å spectral line with the Interferometric Bidimensional Spectrometer (IBIS) at the Dunn Solar Telescope, operated by the National Solar Observatory, in Sunspot, New Mexico. It shows a sunspot in the lower right, with the dark umbra and penumbra, surrounded by granulation.
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