A spectral and photometrical calibration system for infrared instrumentation

Favio Bortoletto; Demetrio Magrin; Carlotta Bonoli; Maurizio D'Alessandro

doi:10.1117/12.623579

18 August 2005 A spectral and photometrical calibration system for infrared instrumentation

Favio Bortoletto, Demetrio Magrin, Carlotta Bonoli, Maurizio D'Alessandro

Proceedings Volume 5897, Photonics for Space Environments X; 58970G (2005) https://doi.org/10.1117/12.623579
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

We present a calibration unit to be used in near and medium infrared instrumentation. The system belongs to the 'black-body' (BB) and 'integrating-sphere' (IS) category and has been developed during the phase-A study as part of the Medium Infrared Instrument (MIRI) to be inserted on the NASA-ESA mission James Webb Space Telescope (JWST). A voltage driven resistance temperature device (RTD) is used as active thermal light source with spectral energy distribution determined by the working temperature and material characteristics, while the integrating sphere is used in order to create a Lambertian beam of calibration light. The system would provide light both for flat-fielding calibration and, in a further development, for wavelength calibration making use of the same illumination optics. We will describe the experimental setup and the properties requested by the device. A complete analytical simulation guiding the dimensioning of the emitter and IS is given with the results from several laboratory test made in order to qualify the system in realistic operating conditions.

Citation Download Citation

Favio Bortoletto, Demetrio Magrin, Carlotta Bonoli, and Maurizio D'Alessandro "A spectral and photometrical calibration system for infrared instrumentation", Proc. SPIE 5897, Photonics for Space Environments X, 58970G (18 August 2005); https://doi.org/10.1117/12.623579

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