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Fig. 2


Digitized white-light image of the full disk of the Sun. The image was digitized with 4096    ×    4096 pixels resulting in a plate scale of 0.62 arcsec per pixel. The central white line represents the east-west line on the sky. The date and time of the observations are shown in the top right corner of the image. The image was obtained on March 27, 1938 at 08:10 h.

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