Mission Overview

mission wavelength

Wavelength Coverage

mission coverage

The JWST Near-Infrared Spectrograph (NIRSpec) enables 0.6–5.3 μm spectroscopy at resolving powers of ~100, ~1,000, and ~2,700 in four observing modes. NIRSpec is designed to be particularly powerful for multiplexing spectroscopy and high contrast, high throughput single-object spectroscopy. 

Active From

Not yet launched.


Varies by Observing Mode:  see Table 1 for details: NIRSpec Modes

  • Pixel Scale: ~0.1"/pixel
  • Resolution: ~100 (prism) ; ~1000 (medium) ; ~2700 (high)


On this Page

Search Tools

MAST Portal

Search multiple missions using target names or coordinates.


Tools for programmatically querying the MAST Portal

Simulated Data

Simulated data from the NIRSpec instrument team hosted @ESA

Primary Documents

External Links