An Etymological Dictionary of Astronomy and Astrophysics

A technique in spectroscopy for recording a spectrum from
each point of an extended object. The field of view image is divided into a multitude of small components using different methods, e.g. lenslet arrays, fiber bundles, or image slicers. From each component a spectrum is extracted or an image is reconstructed at a particular wavelength.

See also: → integral; → field; → spectroscopy.