Astrophysics (Index)About

integral field unit

(IFU)
(instrument to allow a spectrograph to capture data over a 2D field)

An integral field unit (IFU) is an instrument that allows a "normal" spectrograph, i.e., with a slit opening, to capture data across a two-dimensional field. The combined instrument is called an integral field spectrograph. A typical spectrograph collects data from a line through an image (one dimension) and offers spectral data over one spatial dimension. The integral field unit rearranges points of light so that the slit includes data across a two-dimensional area, but at a relatively low spatial resolution. Spectrographs are often built so they can be used with or without the integral field unit.

Methods used:

The phrase IFU observation naturally refers to a spectrographic observation using an IFU.


(color,EMR,spectrum,instrument type)
Further reading:
http://en.wikipedia.org/wiki/Integral_field_spectrograph
http://www.ucolick.org/~bolte/AY257/ay257_5a.pdf
http://www.astro.caltech.edu/~george/ay122/Ay122a_Spectroscopy.pdf

Referenced by pages:
Anglo-Australian Telescope (AAT)
Giant Magellan Telescope (GMT)
imaging Fourier transform spectroscopy (IFTS)
imaging spectrometer
integral field spectrograph
IRTF
multi-object spectrograph
spectroscopy
William Herschel Telescope (WHT)
WIYN 3.5m Telescope

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