Jet Emission -- Stellar Jets: Clues to the Process of Star and Planet Formation -- Measurement of Physical Conditions in Stellar Jets -- Adaptive Optics, and Space Observations Spectro-astrometry -- Basic Concepts and Parameters of Astronomical AO Systems -- IR Spectroscopy of Jets: Diagnostics and HAR Observations -- Observing YSO Jets with Adaptive Optics: Techniques and Main Results -- Spectro-astrometry: The Method, its Limitations, and Applications -- Observations of YSO Jets from Space: HST and Beyond -- Observations and Models of X-ray Emission from Jets of Infant Stars -- Interferometry: Technique and Applications -- Principles of Interferometry -- (Sub)mm Interferometry Applications in Star Formation Research -- Observing Young Stellar Objects with Very Large Telescope Interferometer -- Presentation of AMBER/VLTI Data Reduction -- High Angular Resolution Observations of Disks.

This volume contains the edited lecture notes of the Second JETSET School on Jets from Young Stars: Clues from High Angular Resolution Observations organised by the Marie Curie Research Training Network JETSET: Jet Simulations, Experiments and Theory. After the opening two chapters on jet emission, readers can learn the fundamental background of modern high-spatial-resolution techniques, and how such methods have impacted on our understanding of young stars. The lectures provide hands-on insight into Observing from space, e.g. from HST and in the future JWST, and from the ground with adaptive optics, The use of interferometers at millimetre and infrared wavelengths, Spectro-astrometry Image analysis and spectral diagnostic techniques High-Angular Resolution studies of the inner regions of circumstellar disks, which play a fundamental role in jet launching. The books' practical approach makes it an outstanding and extremely useful textbook for PhD students and young researchers in astronomy.