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Lennart Lindegren. Profile picture.

Lennart Lindegren

Professor

Lennart Lindegren. Profile picture.

High-accuracy positioning: astrometry

Author

  • Lennart Lindegren

Summary, in English

The limiting accuracy for measuring the location of an optical image is set by diffraction and photon noise, i.e., by the dual wave-particle nature of light. A theoretical expression for the limiting accuracy is derived under idealized conditions and generalized to take into account more realistic circumstances, such as additive noise and finite pixel size. Its application is discussed in relation to different space-astrometry techniques including grid modulation, direct imaging, and interferometry.

Department/s

  • Lund Observatory - Has been reorganised

Publishing year

2010

Language

English

Pages

279-291

Publication/Series

Observing Photons in Space

Volume

9

Document type

Book chapter

Publisher

International Space Science Institute

Topic

  • Astronomy, Astrophysics and Cosmology

Status

Published

ISBN/ISSN/Other

  • ISSN: 1608-280X
  • ISBN: 978-92-9221-938-8
  • ISSI SR
  • ISSI Scientific Report