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Proceedings Paper

Rocket-Borne Liquid-Helium-Cooled Circular-Variable Filter Spectrometer
Author(s): D.Gary Frodsham
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Paper 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.

Paper Details

Date Published: 3 December 1980
PDF: 5 pages
Proc. SPIE 0246, Contemporary Infrared Sensors and Instruments, (3 December 1980); doi: 10.1117/12.959356
Show Author Affiliations
D.Gary Frodsham, Utah State University (United States)

Published in SPIE Proceedings Vol. 0246:
Contemporary Infrared Sensors and Instruments
Herbert Kaplan; Frederic M. Zweibaum, Editor(s)

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