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NIRSpec Integral Field Unit

NIRSpec Integral Field Unit

Date: 04 September 2013
Satellite: JWST
Copyright: SSTL

The NIRSpec Integral Field Unit (IFU) flight model on its transport plate. The IFU is roughly the size of a shoe box and weighs less than 1 kg.

The IFU allows for spatially resolved imaging spectroscopy of extended sources. It has a field of view of 3 arcsec × 3 arcsec that will be split into 900 spectra, each corresponding to a tiny spatial element 0.1 arcsec × 0.1 arcsec in size. The IFU uses an image slicer to cut the image in 30 slices that each give rise to 30 contiguous spectra on the detector.


Last Update: 28 May 2021
18-Apr-2024 21:29 UT

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