Complementing other facilities with STELLA high resolution spectra
STELLA is a fully automatic observatory with very flexible scheduling.
This makes it an outstanding facility for contemporaneous observations
with other telescopes. In this talk I will discuss the results we have
obtained on stellar activity by combining high resolution spectra from
SES with spectropolarimetric observations from VLT, UV and X-ray
observations with HST and Chandra, and near-infrared interferometry with
CHARA.