File:Spectroscopy Modes of Webb’s Scientific Instruments (01FA0SYF73JT3N8DW5H664GD6P).jpeg

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English: Spectroscopy involves spreading light out into a spectrum in order to analyze the intensity (or brightness) of individual colors, or wavelengths. During a spectroscopic observation, light from space is directed through a spectrograph, which spreads the light out into its component wavelengths. The light then strikes the detectors, which measure the intensity of each individual wavelength of light. Spectral data are typically plotted on a graph of intensity vs. wavelength. Differences in brightness with wavelength, and the presence or absence of specific wavelengths, provide information about temperature, composition, density, motion, and distance. All four of Webb’s scientific instruments (MIRI, NIRCam, NIRSpec, and NIRISS) have spectroscopy modes.
Date 15 July 2021, 15:45:00 (upload date)
Source Spectroscopy Modes of Webb’s Scientific Instruments
Author ILLUSTRATION: NASA, ESA, Andi James (STScI)
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Public domain This file is in the public domain because it was created by NASA, ESA and CSA. NASA Webb material is copyright-free and may be freely used as in the public domain without fee, on the condition that only NASA, STScI, and/or ESA/CSA is credited as the source of the material. This license does not apply if source material from other organizations is in use.
The material was created for NASA by Space Telescope Science Institute under Contract NAS5-03127. Copyright statement at webbtelescope.org. For material created by the European Space Agency on the esawebb.org site, use the {{ESA-Webb}} tag.

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