Fig. 1.
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Images of a quiet-Sun region taken by the MiHI prototype at t = 8 minutes on 2018 August 25. (a): Hα–2 Å image. (b): Hα line core intensity map. (c): Hα Doppler velocity map. The solid blue lines in the Hα line core intensity map (panel (b)) and Doppler velocity map (panel (c)) indicate the artificial slits we used to construct time-distance plots in Fig. 2.
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