On Sunday, January 15, 2023, the James Webb Space Telescope’s Near Infrared Imager and Slitless Spectrograph (NIRISS) experienced a communications delay within the instrument, causing its flight software to time out. The instrument is currently unavailable for science observations while NASA and the
) experienced a communications delay within the instrument, causing its flight software to time out. The instrument is currently unavailable for science observations whileand the Canadian Space Agency work together to determine and correct the root cause of the delay. There is no indication of any danger to the hardware, and the observatory and other instruments are all in good health. The affected science observations will be rescheduled.
The Near-Infrared Imager and Slitless Spectrograph is one of Webb’s four scientific instruments. NIRISS provides near-infrared imaging and spectroscopic capabilities. As the only instrument capable of aperture mask interferometry, NIRISS has the unique ability to capture images of bright objects at a resolution greater than the other imagers. NIRISS is a contribution of the Canadian Space Agency.
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