Rocket-Borne Liquid-Helium-Cooled Circular-Variable Filter Spectrometer

D.Gary Frodsham

doi:10.1117/12.959356

3 December 1980 Rocket-Borne Liquid-Helium-Cooled Circular-Variable Filter Spectrometer

D.Gary Frodsham

Proceedings Volume 0246, Contemporary Infrared Sensors and Instruments; (1980) https://doi.org/10.1117/12.959356
Event: 24th Annual Technical Symposium, 1980, San Diego, United States

Abstract

The paper describes a fourth-generation liquid-helium-cooled medium wavelength infrared spectrometer. The sensor incorporates a rotating circular-variable filter to scan the 2 to 22.5 pm range at =2% resolution. The spectrometer design is optimized for high throughput and low background measurements and hardened for upper atmospheric measurements aboard sounding rockets. Two of the significant new features of the sensor are totally reflective cold optics and the use of a vibrating-reed chopper. These advances led to a 30% reduction in size and weight, 50% increase in hold time, five times increased sensitivity, spectrally independent field of view and 100% improvement in linearity of response.

Citation Download Citation

D.Gary Frodsham "Rocket-Borne Liquid-Helium-Cooled Circular-Variable Filter Spectrometer", Proc. SPIE 0246, Contemporary Infrared Sensors and Instruments, (3 December 1980); https://doi.org/10.1117/12.959356

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