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The Wide Field-of View Imaging Spectrometer (WFIS) is a pa tented optical design allowi ng horizon-to-horizon imaging of the Earth and Earths atmosphere in the pushbroom-imaging mode from space. The design uses a unique field mirror arrangement to couple a fast, f/2.8, unobstructed all-reflective telescope to an all-reflective three element imaging spectrometer. Early laboratory demonstration of the technology covered fields of view exceeding 70 degrees. The latest instrument, the Engineering Model WFIS, demonstrates the fi eld of view can be extended to 120 degrees. This paper summarizes the current ongoing work with the Engineering M odel WFIS covering this field of view and a spectral range from 360 nm to 1000 nm. Also presented are the results of th e latest laboratory and field demonstrations. The paper also identifies specific appli cations the technology is now addressing. Keywords: Wide Field Imaging Spectrometer, hyperspectral imager, remote sensing, satellite instrument calibration |
