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Imaging at High Angular Res...

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Imaging at High Angular Resolution of Stellar Surfaces and Close Environment 1
Evry Schatzman School 2017 3
List of participants 8
Contents 10
Preface 13
Diffraction-dominated observational astronomy 18
1 Introduction 19
2 Images in astronomy 20
3 Coherence properties of light 21
4 Diffraction-dominated imaging 27
5 High-contrast imaging 31
6 Atmospheric turbulence and Adaptive Optics 36
7 Extreme adaptive optics 42
8 Calibration of biases 44
9 Focal-plane based wavefront control? 46
10 Conclusion 52
References 53
Introduction to optical/IR interferometry: history and basic principles 57
1 Introduction 58
2 Some reminders 60
3 Brief history about the measurements of stellar diameters 66
4 Light coherence 72
5 Some examples of interferometers 82
6 Three important theorems and some applications 85
References 104
Optical Long Baseline Interferometry 106
1 Introduction 107
2 Angular diameter and coherence of the wavefront 108
3 Angular diameter and Object-Image relationship 110
4 A direct imaging technique 113
5 The reality of the coherence 116
6 Practical considerations for the implementation of an interferometer 119
7 A modern panorama of optical long baseline interferometry 122
8 The study of stellar surface and their close environment usinginterferometry 125
9 Steps to the future 140
References 141

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