Jochen Heidt obtained his PhD in 1994 at the University of Heidelberg and has been working at the Landessternwarte Heidelberg as research associate since then. His scientific interests are radiation processes, host galaxies and cluster environment of radio-loud AGN, high-redshift galaxy evolution as well as NIR instrumentation. He worked as instrument scientist for the LUCI project at the Large Binocular Telescope between 2010 and 2018 and was in charge of the commissioning of the instruments. The LUCI instruments are an identical pair of NIR imager and multi-object spectrographs operating in seeing-limited and diffraction-limited mode at the Large Binocular Telescope. In addition he is regularly teaching the astrolab at the University of Heidelberg and attends observing schools as tutor and teacher. 

Introduction.- Setting the stage - NIR surveys and their calibration.- What we have to deal with - the NIR sky.- What can be built to deal with that - detectors, instrumentation & AO.- Signal-to-noise considerations.- Observing & calibration strategies.- Data reduction recipes.- Taking data above the atmosphere - changes in observing and data reduction principles.- Concluding remarks.

Near-infrared astronomy has become one of the most rapidly developing branches in modern astrophysics. Innovative observing techniques, near-infrared detectors with quantum efficiencies in excess of 90%, highly specialised instruments as well as advanced data reduction techniques have allowed major breakthroughs in various areas like exoplanets, star-forming regions, the supermassive black hole in the Galactic center, and the high-redshift Universe.
In this book, the reader will be introduced to the basic concepts of how to prepare near-infrared observations with maximized scientific return. Equal weight is given to all aspects of the data reduction for both - imaging and spectroscopy. Information is also provided on the state of the art instrumentation available and planned, on detector technology or the physics of the atmosphere, all of which influence the preparation and execution of observations and data reduction techniques. The beginner but also the expert will find alot of information in compact form which is otherwise widely dispersed across the internet or other sources.