The integral field device (IFU) is a mix of camera and spectrograph used to capture and map spectra across a field of see so that you can understand variation above space. NIRSpec and MIRI have IFUs. Best center icon labeled “spectrographs”: Line drawing of light becoming refracted by a prism. https://alexisfgbup.blogvivi.com/29429570/how-the-best-smart-home-devices-can-save-you-time-stress-and-money