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Questions tagged [gaia]

Questions about the space observatory GAIA.

GAIA is a spacecraft launched by ESA in 2013 dedicated to astrometry. It measures the parallax, position and motion of 1 billion stars with unprecedented precision. It operates at the Sun-Earth L2 Lagrangian point.

GAIA is the successor of the Hipparcos mission.

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A question about using both the Simbad and the Gaia archive

It seems a bunch of people, including myself, have got it into our heads to create a 3D visualisation of the stars around us - one where you get to fly around them rather than view them from the viewpoint of Earth. This means, obviously, that I'm…
Awoogamuffin
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How many GAIA Data Release 2 files are there?

I am using this index page to download GDR2 data files. http://cdn.gea.esac.esa.int/Gaia/gdr2/gaia_source/csv/ But it keeps giving a different number of links. Sometimes it shows 16,000 files, sometimes 31,000 and the max I have seen is 61,237. What…
Ags1
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What a grating on GAIA RVS spectroscope?

What size of the grating on GAIA RVS spectroscope ? How many lines on mm, or what defraction angle for 850 nm wavelenth light ? I find some more details here: http://sci.esa.int/gaia/44092-gaia-rvs-grating/ and…
tsikraserg
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