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Proceedings Paper • Open Access

Use of COTS uncooled microbolometers for the observation of solar eruptions in far infrared
Author(s): B. Le Ruyet; P. Bernardi; A. Sémery

Paper Abstract

The Small Explorer for Solar Eruptions (SMESE) mission is a French-Chinese satellite dedicated to the combined study of coronal mass ejections and flares. It should operate by the beginning of 2013. The spacecraft is based on a generic MYRIADE platform developed by CNES. Its payload consists of a Lyman α imager and a Lyman α chronograph (LYOT), a far infrared telescope (DESIR) and a hard X and γ ray spectrometer (HEBS). Its Sun-synchronous orbit will allow for continuous observations.

LESIA (Laboratoire d’Etudes Spatiales et d’Instrumentation en Astrophysique, in Paris-Meudon Observatory) is in charge of DESIR instrument. DESIR (Detection of Eruptive Solar InfraRed emission) is an imaging photometer observing the sun in two bandwidths: [25; 45μm] and [80; 130μm].

The detector is a commercially available, uncooled microbolometer focal plane array (UL 02 05 1, from ULIS) designed for thermographic imaging in the 8-14 μm wavelength range. The 160x120 pixels are based on amorphous silicon, with dimensions 35x35 μm2.

The performances in terms of noise and dynamics given by the manufacturer associated with simulations of a perfect quarter-wave cavity to predict the microbolometer absorption, make possible the use of such a detector to fulfil the DESIR detection specifications in the two FIR bandwidths.

During the A Phase, tests have been carried out in our laboratory to validate the feasibility of the project. In this work, we present the first results obtained on the microbolometer performances in the FIR domain.

Paper Details

Date Published: 21 November 2017
PDF: 8 pages
Proc. SPIE 10566, International Conference on Space Optics — ICSO 2008, 105662U (21 November 2017); doi: 10.1117/12.2308233
Show Author Affiliations
B. Le Ruyet, Observatoire de Paris-Meudon (France)
P. Bernardi, Observatoire de Paris-Meudon (France)
A. Sémery, Observatoire de Paris-Meudon (France)

Published in SPIE Proceedings Vol. 10566:
International Conference on Space Optics — ICSO 2008
Josiane Costeraste; Errico Armandillo; Nikos Karafolas, Editor(s)

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