JWST NIRSpec instrumentation components include optics, dispersers and filters, detectors, the micro-shutter assembly, an integral field unit, and fixed slits.
Overview of NIRSpec instrument components
The JWST Near Infrared Spectrograph (NIRSpec) enables 0.6–5.3 μm spectroscopy at resolving powers of ~100, ~1,000, and ~2,700. NIRSpec offers four observing modes: (1) multi-object spectroscopy (MOS), (2) integral field unit (IFU) spectroscopy, (3) fixed slit (FS) spectroscopy, and (4) bright object time-series (BOTS) spectroscopy. The NIRSpec instrument hardware components used to carry out science in these modes are as follows: