Our paper, ‘Optical spectroscopy and photometry of SAX J1808.4-3658 in outburst’, is published here.

Our 2019 optical outburst detection ATels are here, here, here and here.

2019 Outburst light curve

Overlay of 2015 and 2019 outburst

2019 light curve of SAX J1808.4-3658

Long-term light curve of SAX J1808.4-3658

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