Basic principles of scanning space astrometry

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Abstract

We outline the basic principles of scanning space astrometry, such as represented by Hipparcos, Gaia, and some other astrometric satellites planned or proposed. We explain the need for large-angle measurements, why these are essentially one-dimensional, how it is possible to determine absolute parallaxes, and why a Hipparcos-type scanning law is favourable. We discuss the choice of the basic angle between the two viewing directions, the principle of self-calibration, and why the resulting numerical problem must be difficult to solve.

Detaljer

Författare
Enheter & grupper
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Astronomi, astrofysik och kosmologi
Originalspråkengelska
Sidor (från-till)109-114
TidskriftEAS Publications Series
Volym45
UtgivningsnummerGAIA: At the Frontiers of Astrometry
StatusPublished - 2011
PublikationskategoriForskning
Peer review utfördJa