Fig. 2.
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Regular 10 s exposure time 17.4 nm FSI image taken at 0.68 au from the Sun on 2022 March 23 at 23:01. At this distance, the FOV extends to 4.9 R⊙. With this exposure time, signal is detected up to 2 R⊙. Longer exposures and the use of an occulting disk are required at larger angles (Fig. 3). The cause of the two vertical dark bands has not yet been identified.
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