NIRSpec Observing Modes

The JWST Near Infrared Spectrograph (NIRSpec) has 4 observing modes—near-infrared multi-object spectroscopy (MOS), integral field unit (IFU) spectroscopy, fixed slits (FS) spectroscopy, and bright object time-series (BOTS) spectroscopy—covering wavelengths from 0.6 to 5.3 μm

NIRSpec has 4 observing modes that correspond to templates in the Astronomer's Proposal Tool (APT):




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