Written specifically for physicists and graduate students, this textbook focuses on fundamental and sometimes practical limitations on the ultimate performance that an astronomical system may reach, rather than presenting particular systems in detail. This second edition has been entirely restructured and almost doubled in size, in order to improve its clarity and to account for the great progress achieved in the last 15 years. It deals with ground-based and space-based astronomy and their respective fields. It presents the new generation of giant ground-based telescopes, with the new methods of optical interferometry and adaptive optics. But it also presents the ambitious concepts behind space missions aimed for the next decades. Avoiding particulars, it covers the whole of the electromagnetic spectrum, and touches upon the "new astronomies" becoming possible with gravitational waves and neutrinos.

There are only few textbooks devoted to observational techniques in astronomy. This is written by an internationally well-known astronomer and already the first edition is seen by some as a classic.

Autorentext
Pierre Léna is emeritus professor of physics and astrophysics at the university of Paris Diderot-Paris 7 and researcher at the Observatoire de Paris.François Mignard is a director of research of the Centre National de la Recherche Scientific (CNRS) at the Observatoire de la Côte d Azur. He specialises in astrometry and has played a major role in the future European space mission GAIA.

Inhalt

1. Astrophysical Information.- 2. The Earth's Atmosphere and Space.- 3. Radiation and Photometry.- 4. Telescopes and Images.- 5. Spectral Analysis.- 6. The Signal in Astronomy.- 7. Detectors.- 8. Space-Time Reference Frames.- Appendix A. Fourier Transforms.- A.1 Definitions and Properties.- A.1.1 Definitions.- A.1.2 Some Properties.- A.1.3 Important Special Cases in One Dimension.- A.1.4 Important Special Cases in Two Dimensions.- A.1.5 Important Theorems.- A.2 Physical Quantities and Fourier Transforms.- A.3 Wavelets.- Appendix B. Random Processes and Variables.- B.1 Random Variables.- B.2 Random or Stochastic Processes.- B.3 Physical Measurements and Estimates.- B.3.1 An Example of Estimation: Law of Large Numbers.- B.3.2 Estimating the Moments of a Process.- B.3.3 Estimation and Bias.- Appendix C. Physical and Astronomical Constants.- Appendix D. Tables of Space Missions.- Appendix E. Astronomy on the World Wide Web.- Appendix F. Acronyms and Abbreviations.