Fig. 1.
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Spectral sequence of RS Ophiuchi at various stages during its 2006 (upper panel) and 2021 (lower panel) outbursts in UVOT data. The flux in units 
of each spectrum was normalised and then plotted with an applied offset of 2. The highlighted emission lines are listed in Table 3. In the first four 2021 spectra the area of peak sensitivity around 2900 Å was saturated.
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