The imaging process in stellar interferometers is explained starting from first principles on wave propagation and diffraction. Wave propagation through turbulence is described in detail using Kolmogorov statistics. The impact of turbulence on the imaging process is discussed both for single telescopes and for interferometers. Correction methods (adaptive optics and fringe tracking) are presented including wavefront sensing/fringe sensing methods and closed loop operation. Instrumental techniques like beam combination and visibility measurements (modulus and phase) as well as Nulling and heterodyne interferometry are described. The book closes with examples of observing programmes linking the theory with individual astrophysical programmes.
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This carefully written book is intended to provide a solid understanding of the principles of stellar interferometry. Illustrated by excellent drawings and calculated graphs, it is aimed at students starting an astronomical research project in this field.
1 Propagation of Light.- 2 Imaging Process Propagation through Optical Systems.- 3 Atmospheric Turbulence.- 4 Instrumental Techniques.- 5 Observing through Atmospheric Turbulence.- 6 Modern Interferometers.- A Appendix.- References.- Index.
Over the last decade, stellar interferometry has developed from a specialist tool to a mainstream observing technique, attracting scientists whose research benefits from milliarcsecond angular resolution. Stellar interferometry has become part of the astronomers toolbox, complementing single-telescope observations by providing unique capabilities that will advance astronomical research.
This carefully written book is intended to provide a solid understanding of the principles of stellar interferometry to students starting an astronomical research project in this field or to develop instruments and to astronomers using interferometry lS
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