Fig. 1.
Filament observed on May 29, 2017. Panel a: context full-disk image in the SDO/AIA 193 Å channel. Panel b: zoom-in on the box marked in the panel a. Panel c: Hα line core image of the filament taken by DST/IBIS at 14:44:55 UT. White box indicates the region from which the average quiet-Sun profile was calculated. Panel d–f: contextual SDO/AIA images in three EUV channels: 171 Å, 304 Å, and 211 Å. The images have the same zoomed-in field of view as is in panel b.
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