NASA's James Webb Space Telescope

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Near-Infrared Imager and Slitless Spectrograph (NIRISS)

The JWST Near-InfraRed Imager and Slitless Spectrograph (NIRISS) is packaged with the fine-guidance camera, but is functionally independent. It provides observing modes over wavelengths from 0.6-5.0 micron for:

  1. Wide-field slitless spectroscopy (WFSS)
  2. Single object slitless spectroscopy (SOSS)
  3. Aperture masking interferometry (AMI)
  4. Imaging

The Canadian Space Agency is providing the NIRISS to the JWST Project. The prime contractor is Honeywell (formerly COM DEV). The Principal Investigator for the NIRISS is René Doyon from the Université de Montréal.

For detailed instrument information, please review the NIRISS JWST User Documentation (JDox).