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PEPSI during daytime: disk-unresolved solar light is fed to the spectrograph from a small Sun-as-a-star telescope. The upgrade SDI-POL will feed polarised light via two fibers to the spectrograph.
The STELLA Open Cluster Survey (SOCS) investigates the rotational evolution of cool stars through observations of open clusters with different ages. Precise photometric time series are collected with the STELLA telescope on Teneriffa.
PLATO (PLAnetary Transits and Oscillation of stars) is a satellite mission that will continuously observe a 100 000 stars in a field-of-view of ~2250 sq.deg. using a suite of 24 telescopes.