FoV — the angular extent of ground the spectrometer “sees” — determines the spatial footprint of each measurement, and it sits at the interface between instrument optics, sampling strategy, and the real, messy world we measure. Field spectroscopy gives us extraordinarily rich spectral detail about Earth's surfaces, but there's a deceptively simple. The spectrometer, and in particular its image slicer, is used over a large wavelength range. The photometer pixel size of 9. 4 arcseconds is a compromise between resolution at short wavelengths and observing efficiency (mapped area) at long wavelengths. Commercially available detectors are not only expensive, but have a limited number of pixels, compared with visible band detectors. Typical push broom hyperspectral imaging systems consist of a fore. We report on a near-infrared imaging spectrometer for sensing the three most prominent greenhouse gases in the atmosphere (water vapor, carbon dioxide and methane). The optical design of the spectrometer involves freeform optics, which enables achieving exceptional performance and allows. Spectroscopy is a key analytical method used to investigate material composition and related processes through study of the interaction of light with matter. Joseph von Fraunhofer invented the spectroscope in 1814 and used it to characterize the. A field-of-view-folding approach is proposed to extend the field of view (FOV) of a dispersive imaging spectrometer after introducing several linear arrays of imaging fiber bundles to which to replace the slit.
