astrometric instruments

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• Space Interferometry Mission — Infobox Space telescope name = Space Interferometry Mission (SIM) caption = Artist s concept of the SIM telescope in space organization = NASA / JPL major contractors = Northrop Grumman alt names = SIM PlanetQuest nssdc id = location = orbit type …   Wikipedia

• Astrometry — is the branch of astronomy that relates to precise measurements and explanations of the positions and movements of stars and other celestial bodies. Although once thought of as an esoteric field with little useful application for the… …   Wikipedia

• List of astronomy acronyms — This is a compilation of acronyms commonly used in astronomy. Most of the acronyms are drawn from professional astronomy and are used quite frequently in scientific publications. However, a few of these acronyms are frequently used by the general …   Wikipedia

• Methods of detecting extrasolar planets — Any planet is an extremely faint light source compared to its parent star. In addition to the intrinsic difficulty of detecting such a faint light source, the light from the parent star causes a glare that washes it out. For those reasons, only a …   Wikipedia

• Binaire Astrométrique — Mouvement de Sirius sur le ciel, d après Camille Flammarion Une binaire astrométrique est une étoile binaire dont les deux composantes ne sont pas résolues, la duplicité étant révélée par le mouvement orbital du photocentre sur le ciel. En… …   Wikipédia en Français

• Binaire astrometrique — Binaire astrométrique Mouvement de Sirius sur le ciel, d après Camille Flammarion Une binaire astrométrique est une étoile binaire dont les deux composantes ne sont pas résolues, la duplicité étant révélée par le mouvement orbital du photocentre… …   Wikipédia en Français

• Binaire astrométrique — Mouvement de Sirius sur le ciel, d après Camille Flammarion Une binaire astrométrique est une étoile binaire dont les deux composantes ne sont pas résolues, la duplicité étant révélée par le mouvement orbital du photocentre sur le ciel. En… …   Wikipédia en Français

• Astronomical interferometer — An astronomical interferometer is an array of telescopes or mirror segments acting together to probe structures with higher resolution. Astronomical interferometers are widely used for optical astronomy, infrared astronomy, submillimetre… …   Wikipedia

• Astronomical optical interferometry — One of the first astronomical interferometers was built on the Mount Wilson Observatory s reflector telescope in 1920 in order to measure the diameters of stars. The red giant star Betelgeuse was among the first to have its diameter determined in …   Wikipedia

• United States Naval Observatory — USNO redirects here. For other uses, see USNO (disambiguation). The Seal of the USNO with a quote from the Astronomicon, Adde guberandi studium: Pervenit in astra, et pontum caelo conjunxit, Increase the study of navigation: it arrives in the… …   Wikipedia

• Doppler spectroscopy — Diagram showing how a smaller object (such as an extrasolar planet) orbiting a larger object (such as a star) could produce changes in position and velocity of the latter as they orbit their common center of mass (red cross). Doppler spectroscopy …   Wikipedia