Imaging spectrometer

An imaging spectrometer is an instrument used in the field of imaging spectroscopy to acquire a spectrally-resolved image of an object or scene, often referred to as a datacube due to the three-dimensional representation of the data. Namely, one axis of the image corresponds to distance, the other to wavelength, and the third one is the intensity. The principle of operation is the same as that of the simple spectrometer, but special care is taken to avoid optical aberrations for better image quality.

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Example imaging spectrometer types include: filtered camera, whiskbroom scanner, pushbroom scanner, integral field spectrograph (or related dimensional reformatting techniques), wedge imaging spectrometer, Fourier transform imaging spectrometer, computed tomography imaging spectrometer (CTIS), image replicating imaging spectrometer (IRIS), and coded aperture imaging spectrometer.

• List of imaging spectrometer instruments: http://www.geo.unizh.ch/~schaep/research/apex/is_list.html
• Home page of the AVIRIS imaging spectrometer: http://aviris.jpl.nasa.gov/
• Home page of the MODIS imaging spectrometer: http://modis.gsfc.nasa.gov/
• Computed tomographic imaging spectrometer research lab: http://www.optics.arizona.edu/detlab/
• Home page of the near-infrared integral field imaging spectrograph at the Gemini observatory: http://www.gemini.edu/sciops/instruments/nifs/NIFSIndex.html