Fig. 4.


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Rastered images of the transition network on 17 June 2020 from 09:06:38 to 10:44:13 UT (solar distance: 0.52 AU, 1″ = 377 km on the surface) in a different set of lines, arranged in increasing order of temperature: O II – 40 000 K, C III – 50 000 K, N III – 66 000 K, N IV – 120 000 K, O VI – 260 000 K, Ne VIII – 550 000 K. The yellow circle shows the location of the brightest source – see text for details. The observation was made using a 6″ slit and 60 s exposure.

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