Highlight: Solar AO running at 150Hz on Mercury in daytime

THEMIS has a long track of doing Mercury observations in daytime. It took some tuning to adjust a 1kHz AO system to less photons, longer exposure times, and a slower speed. But the hardware and the software are strictly identical, and changing the configuration takes just 2 minutes. Despite of the slower speed, the result is surprisingly good and gives excellent results in the long-exposure spectra. These data are use for sub-arcsecond mapping of the exospheric sodium emission of Mercury (sodium map emission courtesy Mangano & Leblanc).