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Microchannel plate x-ray optics on the Mercury imaging x-ray spectrometer

We report on the design, development and measured performance of the Microchannel plate X-ray optics for the Mercury imaging X-ray spectrometer instrument, due to fly to Mercury on the ESA/JAXA BepiColombo mission in 2018. This paper serves as a progress update, identifying further work to finish the analysis of data from the flight model.