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Integral Field Spectroscopy
 
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Integral Field Spectroscopy
In recent years it has become possible to take an optical/near IR
spectrum of a 2-dimensional part of the sky, as opposed to a linear region
using a long-slit spectrograph. This technique, Integral Field Spectroscopy,
offers a number of advantages, and is clearly a technique of the future.
A nice description of the technique can be found on Jeremy
Allington-Smith's homepage. To resume, the next figure schematically
shows how several implementations of Integral Field Spectroscopy work.
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