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Proceedings Paper • Open Access

Development of a calibration equipment for spectrometer qualification
Author(s): C. Michel; B. Borguet; A. Boueé; P. Blain; A. Deep; V. Moreau; M. François; L. Maresi; A. Myszkowiak; M. Taccola; J. Versluys; Y. Stockman

Paper Abstract

With the development of new spectrometer concepts, it is required to adapt the calibration facilities to characterize correctly their performances. These spectro-imaging performances are mainly Modulation Transfer Function, spectral response, resolution and registration; polarization, straylight and radiometric calibration.

The challenge of this calibration development is to achieve better performance than the item under test using mostly standard items. Because only the subsystem spectrometer needs to be calibrated, the calibration facility needs to simulate the geometrical “behaviours” of the imaging system.

A trade-off study indicates that no commercial devices are able to fulfil completely all the requirements so that it was necessary to opt for an in home telecentric achromatic design. The proposed concept is based on an Offner design. This allows mainly to use simple spherical mirrors and to cover the spectral range. The spectral range is covered with a monochromator. Because of the large number of parameters to record the calibration facility is fully automatized.

The performances of the calibration system have been verified by analysis and experimentally. Results achieved recently on a free-form grating Offner spectrometer demonstrate the capacities of this new calibration facility.

In this paper, a full calibration facility is described, developed specifically for a new free-form spectro-imager.

Paper Details

Date Published: 25 September 2017
PDF: 9 pages
Proc. SPIE 10562, International Conference on Space Optics — ICSO 2016, 105624T (25 September 2017); doi: 10.1117/12.2296101
Show Author Affiliations
C. Michel, Ctr. Spatial de Liège (Belgium)
B. Borguet, AMOS (Belgium)
A. Boueé, Ctr. Spatial de Liège (Belgium)
P. Blain, Ctr. Spatial de Liège (Belgium)
A. Deep, European Space Research and Technology Ctr. (Netherlands)
V. Moreau, AMOS (Belgium)
M. François, European Space Research and Technology Ctr. (Netherlands)
L. Maresi, European Space Research and Technology Ctr. (Netherlands)
A. Myszkowiak, AMOS (Belgium)
M. Taccola, European Space Research and Technology Ctr. (Netherlands)
J. Versluys, AMOS (Belgium)
Y. Stockman, Ctr. Spatial de Liège (Belgium)

Published in SPIE Proceedings Vol. 10562:
International Conference on Space Optics — ICSO 2016
Bruno Cugny; Nikos Karafolas; Zoran Sodnik, Editor(s)

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