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. Among the mechanisms used:

The phrases IFU observation and IFU spectroscopy naturally refer to a spectrographic observation using an IFU.


(color,EMR,spectrum,instrument type)
Further reading:
https://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
https://www.eso.org/public/teles-instr/technology/ifu/
https://www.sdss.org/dr14/manga/manga-tutorials/what-is-ifu-spectroscopy/
http://www.astro.wisc.edu/our-science/research-areas/instrumentation/integral-field-spectroscopy/

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

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