RefPlanets: Search for reflected light from extrasolar planets with SPHERE/ZIMPOL

Swiss National Science Foundation (SNSF): 200020_162630/1. ESO. Centre National de la Recherche Scientifique (CNRS). MPIA (Germany). Istituto Nazionale Astrofisica. FINES (Switzerland). NOVA (Netherlands). European Commission Joint Research Centre: RII3-Ct-2004-001566, 226604, 312430. Programme National de Planetologie (PNP) of CNRS-INSU in France. Programme National de Physique Stellaire (PNPS) of CNRS-INSU in France. French National Research Agency (ANR): ANR10 LABX56. Centre National de la Recherche Scientifique (CNRS). French National Research Agency (ANR): ANR-14-CE330018. Swiss National Science Foundation (SNSF). French National Research Agency (ANR): ANR10 LABX56. Ministry of Education, Universities and Research (MIUR). Research Projects of National Relevance (PRIN). INAF/Frontiera of the Italian Ministry of Education, University, and Research. European Research Council under the Horizon 2020 Framework Program via the ERC Advanced Grant Origins: 83 24 28.