JWST is equipped with four main scientific instruments:
NIRCam (Near Infrared Camera) - An imaging device used to detect the light from the earliest stars and galaxies. NIRSpec (Near Infrared Spectrograph) - Used to analyze the light from stars and galaxies to determine their composition, temperature, and distance. MIRI (Mid-Infrared Instrument) - Covers the mid-infrared part of the spectrum and is crucial for studying cooler objects like dust clouds and newly forming stars. FGS/NIRISS (Fine Guidance Sensor/Near Infrared Imager and Slitless Spectrograph) - Used for precise pointing and to study exoplanets and distant galaxies.
