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Visible spectrum shown as 400 nm - 700 nm
JWST NIRCam/NIRSpec 600 nm - 5000 nm (0.6 - 5 µm)
JWST MIRI 5 µm - 28.5 µm
(Dashed) Lyman-α 121.6 nm
(Dotted) UV becomes X-rays 10 nm
https://science.nasa.gov/ems/09_visiblelight/
https://www.stsci.edu/jwst/instrumentation