COSENTINO, RosarioRosarioCOSENTINO2022-01-102022-01-102022http://hdl.handle.net/20.500.12386/31318https://doi.org/10.20371/INAF/TechRep/114Most of the contents of this manual is based on information from the HARPS-N Consortium (Astronomical Observatory of the Geneva University (lead), the Harvard-Smithsonian Center for Astrophysics in Cambridge (USA), the Universities of St. Andrews and Edinburgh, the Queens University of Belfast, and the TNG-INAF Observatory).This User Manual is intended to give all necessary information to potential users of the HARPS-N instrument, to help them decide on the opportunity to use the instrument for their scientific applications, to be used as a reference when writing observing proposals and when preparing the observations. For this purpose we give • An overall description of the HARPS-N instrument, its performance and its observing modes; • Information on the preparation of the observations; • Information on the observing process; • A description of the HARPS-N data and near real-time pipeline data reductionenhttp://www.tng.iac.es/instruments/harps/FIS/05 - ASTRONOMIA E ASTROFISICA