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Vosteen, L.L.A. (author), Vink, H.J.P. (author), Doelman, N.J. (author), Doppenberg, E.J.J. (author), Bokhove, H. (author), Technisch Physische Dienst TNO - TH (author)TNO TPD has an extensive experience in the realisation of highly stable passive and active opto-mechanical systems. Future missions of ESA like DARWIN [1] rely heavily on these systems such as metrology equipment, delay lines, nulling equipment etc.. The nulling equipment will be used in the Nulling mode of DARWIN in which it will detect Earth...conference paper 2004
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Leijtens, J.A.P. (author), Court, A.J. (author), de Boom, K. (author), Technisch Physische Dienst TNO - TH (author)Due to lower mass, size and power demands and recognized increased reliability, microbolometer detectors seem to be well suited for small sattelite applications. Due to the improving technical performance, next generation instruments can use uncooled microbolometer arrays without significantly sacrificing performance. An example of this type of...conference paper 2004
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Leijtens, J.A.P. (author), Smorenburg, C. (author), Escudero, I. (author), Boslooper, E.C. (author), Visser, H. (author), van Helden, W.A. (author), Breussin, F.N. (author), Technisch Physische Dienst TNO - TH (author)Current Thermal infra red ( 7..14μm) multispectral imager instruments use cryogenically cooled Mercury Cadmium Telluride (MCT or HgCdTe) detectors. This causes the instruments to be bulky, power hungry and expensive. For systems that have medium NETD (Noise Equivalent Temperature Difference) requirements and can operate with high speed optics (...conference paper 2004
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Kruizinga, B. (author), Visser, H. (author), Pel, J.W. (author), Moddemeijer, K. (author), Smorenburg, C. (author), Technisch Physische Dienst TNO - TH (author)MIRI (the Mid InfraRed Instrument) is one of the focal plane instruments of the James Webb Space Telescope. The instrument comprises a camera and a spectrometer module. The instrument plays the following key roles in the JWST science program. Discovery of the "first light". Assembly of galaxies: history of star formation, growth of black holes,...conference paper 2004
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Swinkels, B.L. (author), Wendrich, T.J. (author), Bhattacharya, N. (author), Wielders, A.A. (author), Braat, J.J.M. (author), Technisch Physische Dienst TNO - TH (author)Space interferometers consisting of several free flying telescopes, such as the planned Darwin mission, require a complex metrology system to make all the components operate as a single instrument. This metrology system consists of various sub-systems to monitor distances, angles and speeds. Our research focuses on one of these sub-systems that...conference paper 2004