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van Amerongen, A.H. (author), Agocs, T. (author), van Brug, H. (author), Nieuwland, G. (author), Venema, L. (author), Hoogeveen, R.W.M. (author)We have developed the technology to manufacture an immersed grating in silicon for the Mid-infrared E-ELT Imager and Spectrograph, METIS. We show that we can meet the required diffraction-limited performance at a resolution of 100000 for the L and M spectral bands. Compared to a conventional grating, the immersed grating drastically reduces the...conference paper 2012
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TNO Industrie en Techniek (author), van Amerongen, A.H. (author), Visser, H. (author), Vink, R.J.P. (author), Coppens, T. (author), Hoogeveen, R.W.M. (author)We have developed a novel diffraction grating based on lithographical techniques and anisotropic etching in silicon. The grating is designed for the short-wave-infrared channel of the TROPOMI imaging spectrometer that will be launched on ESA's Sentinel 5 Precursor mission to monitor trace gases in the earth atmosphere. Stringent requirements on...conference paper 2010
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TNO Industrie en Techniek (author), Hoogeveen, R.W.M. (author), Jongma, R.T. (author), Tol, P.J.J. (author), Gloudemans, A. (author), Aben, I. (author), Vries, J.de (author), Visser, H. (author), Boslooper, E.C. (author), Dobber, M.R. (author), Levelt, P.F. (author)The TROPOMI instrument concept is part of the TRAQ mission proposal to ESA in response to the Call for Ideas in 2005. TRAQ (TRopospheric composition and Air Quality) has been accepted for a further pre-phase A study for the next Earth Explorer core Mission. A very similar instrument has been proposed for the CAMEO platform to the US National...conference paper 2007
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TNO Industrie en Techniek (author), Vries, J.de (author), Laan, E.C. (author), Hoogeveen, R.W.M. (author), Jongma, R.T. (author), Aben, U. (author), Visser, H. (author), Boslooper, E.C. (author), Saari, H. (author), Dobber, M.R. (author), Veefkind, J.P. (author), Kleipool, Q. (author), Levelt, P.F. (author)TROPOMI is a nadir-viewing grating-based imaging spectrograph in the line of OMI and SCIAMACHY. TROPOMI is part of the ESA Candidate Core Explorer Mission proposal TRAQ and also of the CAMEO satellite proposed for the US NRC decadal study. A TROPOMI-like instrument is part of the ESA/EU Sentinel 4&5 pre-phase A studies. TROPOMI covers the OMI...conference paper 2007
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Lichtenberg, G. (author), Kleipool, Q. (author), Krijger, J.M. (author), van Soest, G. (author), van Hees, R. (author), Tilstra, L.G. (author), Acarreta, J.R. (author), Aben, I. (author), Ahlers, B. (author), Bovensmann, H. (author), Chance, K. (author), Gloudemans, A.M.S. (author), Hoogeveen, R.W.M. (author), Jongma, R.T.N. (author), Noël, S. (author), Piters, A. (author), Schrijver, H. (author), Schrijvers, C. (author), Sioris, C.E. (author), Skupin, J. (author), Slijkhuis, S. (author), Stammes, P. (author), Wuttke, M. (author), TNO Industrie en Techniek (author)The calibration of SCIAMACHY was thoroughly checked since the instrument was launched on-board ENVISAT in February 2002. While SCIAMACHY's functional performance is excellent since launch, a number of technical difficulties have appeared, that required adjustments to the calibration. The problems can be separated into three types: (1) Those...article 2006
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TNO Industrie en Techniek (author), Jongma, R.T. (author), Gloudemans, A.M.S. (author), Hoogeveen, R.W.M. (author), Aben, I. (author), de Vries, J. (author), Escudero-Sanz, I. (author), van den Oord, G. (author), Levelt, P.F. (author)In preparation for future atmospheric space missions a consortium of Dutch organizations is performing design studies on a nadir viewing grating-based imaging spectrometer using OMI and SCIAMACHY heritage. The spectrometer measures selected species (O3, NO2, HCHO, H2O, SO 2, aerosols (optical depth, type and absorption index), CO and CH4) with...conference paper 2006