Wide-field imaging spectrometer for the hyperspectral infrared imager (HyspIRI) mission

Holly A. Bender; Pantazis Mouroulis; Ronald J. Korniski; Robert O. Green; Daniel W. Wilson

doi:10.1117/12.2062768

15 September 2014 Wide-field imaging spectrometer for the Hyperspectral Infrared Imager (HyspIRI) mission

Holly A. Bender, Pantazis Mouroulis, Ronald J. Korniski, Robert O. Green, Daniel W. Wilson

Proceedings Volume 9222, Imaging Spectrometry XIX; 92220E (2014) https://doi.org/10.1117/12.2062768
Event: SPIE Optical Engineering + Applications, 2014, San Diego, California, United States

Abstract

We report on the design, tolerancing, and laboratory breadboard of an imaging spectrometer for the Earth Science Decadal Survey Hyperspectral and Infrared Imager (HyspIRI) mission. The spectrometer is of the Offner type but with a much longer slit than typical designs, with 1600 resolvable spatial elements along the slit for a length of 48 mm. Two such spectrometers cover more than the required swath while maintaining high throughput and signal-to-noise thanks to the large pixel size (30 μm), relatively high speed (F/2.8) and small number of reflections. We also demonstrate a method for measuring smile using a linear array, and use the method to prove the achievement of negligible smile of less than 2% of a pixel over the entire 48 mm slit. Thus we show that this high-heritage, all-spherical mirror design can serve the requirements of the HyspIRI mission.

Citation Download Citation

Holly A. Bender, Pantazis Mouroulis, Ronald J. Korniski, Robert O. Green, and Daniel W. Wilson "Wide-field imaging spectrometer for the Hyperspectral Infrared Imager (HyspIRI) mission", Proc. SPIE 9222, Imaging Spectrometry XIX, 92220E (15 September 2014); https://doi.org/10.1117/12.2062768

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