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Gaia

(survey satellite at 400-1000 nanometers)

Gaia is an European Space Agency space observatory designed to map stars and other astronomical objects using astrometry. It has two 1.45 × 0.5 meter telescopes viewing the optical range as well as very near infrared. It was launched in 2013 for a five year mission at the L2 Earth-Sun Lagrangian point. Instruments:

A resulting catalog was released as Gaia Data Release 1 (Gaia DR1) in 2016 and then Gaia Data Release 2 (Gaia DR2) in 2018. Data includes coordinates over time, yielding parallax distances and proper motion, useful, e.g., for identifying stellar associations, and for determining mass when visual binaries are resolved.

The Gaia-ESO Survey (GES) is a survey conducted with Gaia and European Southern Observatory Very Large Telescope of 100,000 stars in four open clusters using Gaia astrometric data and spectroscopy using a VLT multi-object spectrograph.


(telescope,reflector,spacecraft,visible light,infrared,ESA,survey,stars,astrometry,L2,all sky)
http://en.wikipedia.org/wiki/Gaia_(spacecraft)
http://sci.esa.int/gaia/
WaveLFreqPhoton
Energy
  
400nm750THz3.1eVbeginGaia
1000nm300THz1.3eVendGaia
PrefixExampleSurvey/Catalog 
GaiaGaia 1Gaiastar cluster

Referenced by:
astrometry
astronomical survey
European Space Agency (ESA)
Hipparcos
Lagrangian point
young stellar object (YSO)

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