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Fig. 5

image

East-west cuts through the R Aqr binary system for different Hα filter observations taken in imaging mode. Left: B_Ha and N_Ha profiles from August 12, 2014, showing the much reduced continuum throughput in N_Ha (the peak of B_Ha is strongly saturated); right: N_Ha profiles for August 12, 2014 and October 11, 2014 illustrating the brightness change of the red giant within 60 days. The dotted green curve shows the scaled red giant profile as seen in the CntHa filter (slow pol. mode) from October 11.

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