Development and testing of the Composite Infrared Spectrometer (CIRS) retroreflectors

Patricia Ann Hayes; Donald E. Jennings; James J. Lyons III

doi:10.1117/12.178594

23 June 1994 Development and testing of the Composite Infrared Spectrometer (CIRS) retroreflectors

Patricia Ann Hayes, Donald E. Jennings, James J. Lyons III

Proceedings Volume 2227, Cryogenic Optical Systems and Instruments VI; (1994) https://doi.org/10.1117/12.178594
Event: SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, 1994, Orlando, FL, United States

Abstract

The Composite Infrared Spectrometer (CIRS) instrument is scheduled to fly on NASA's Cassini mission to Saturn. CIRS operates at 170 Kelvin and utilizes two Michelson interferometers to measure the infrared spectrum between 7.1 and 1000 microns. The Mid-InfraRed interferometer (MIR) is a classical Michelson design operating in the 7.1 to 16.7 micron band. The Far-InfraRed interferometer (FIR) is a polarizing Michelson design measuring the 16.7 to 1000 micron band. Both the MIR and FIR use retroreflector elements rather than flat mirrors. The MIR requires hollow cube corner style retroreflectors while the FIR polarizing nature requires roof-top mirror style retroreflectors. Initial testing of available technology indicated that interferometric quality retroreflectors do exist in ambient temperatures. Tests were performed using commercially available mounted and unmounted cube corners and commercial cube corners mounted to GSFC designed mounts to characterize their cryogenic, interferometric performance. The Goddard Space Flight Center's ambient and cryogenic test and results are presented here.

Citation Download Citation

Patricia Ann Hayes, Donald E. Jennings, and James J. Lyons III "Development and testing of the Composite Infrared Spectrometer (CIRS) retroreflectors", Proc. SPIE 2227, Cryogenic Optical Systems and Instruments VI, (23 June 1994); https://doi.org/10.1117/12.178594

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