Good News! Webb is Fully Operational Again By Nancy_A
Van Campen said encountering cosmic rays is a normal and expected part of operating any spacecraft, and that this cosmic ray event affected logic in the solid-state circuitry of NIRISS electronics known as the Field Programmable Gate Array. JWST engineers determined that rebooting the instrument would bring it back to full functionality.
“They analyzed all possible methods to safely recover the electronics. When performing the operation, reviews were held at each intermediate step,” she said. “We are now happy to report that Webb’s NIRISS instrument is back online, and is performing optimally.” NIRISS has two capabilities: Wide-Field Slitless Spectroscopy, which involves capturing the overall spectrum of a wide field of view such as a field of stars, part of a nearby galaxy, or many galaxies at once. Its Single-Object Slitless Spectroscopy capabilities involves capturing the spectrum of a single bright object like a star in a field of view.
While JWST has been performing magnificently, this isn’t the first technical issues that engineers have had to deal with. It
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