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Radhakrishnan, V.M. (author), Keller, C.U. (author), Doelman, N.J. (author), Por, E.H. (author)The focal-plane contrast of exoplanet imagers is affected by non-common path aberrations (NCPAs) that the adaptive optics system cannot correct for because they occur after the wavefront has been measured. NCPA estimation is commonly based on the long-exposure science image. Phase retrieval algorithms are often used, and they mostly assume that...article 2023
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Koopmans, L. (author), Brouwer, C. (author), de Vroome, E.M.M. (author)Duurzame inzetbaarheid draait om de continue aansluiting tussen wat een werknemer kan en wil en wat het werk vraagt en biedt (Dorenbosch et al., 2012). Om duurzame inzetbaarheid van werkenden te behouden en bevorderen is het belangrijk om inzicht te krijgen in (voorspellers van) duurzame inzetbaarheid. De Duurzame InzetbaarheidsindeX (DIX) is...report 2022
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Deurloo, J. (author), Huizing, A. (author), van der Harst, S. (author), de Wilde, J. (author), van Dommelen, P. (author), Verkerk, P. (author)Aims The Dutch Development Instrument (DDI; in Dutch: Van Wiechenonderzoek) is used in the Dutch Youth Health Care (YHC) to monitor child development from birth to the age of 4 years. Reference values for the DDI, which indicate that approximately 90% of children achieve each milestone at the recommended age, were published in 1981. Aim of this...conference paper 2022
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Jonker, W.A. (author), Kuiper, S. (author), Kamphues, F.G. (author), Vogel, P.A. (author), Tuan Vu, A. (author), Meiners, C. (author), Horst, R. (author), Navarro, R. (author), Arnold, T. (author)Conventionally, facesheets for deformable mirrors (DM) are manufactured through grinding, polishing and finishing of a piece of optical glass. Due to the amount of material that needs to be removed, the required surface form errors and the complex handling of the fragile product throughout all manufacturing steps, this is a lengthy, risky and...conference paper 2022
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Jonker, W.A. (author), Kuiper, S. (author), Kamphues, F.G. (author), Bos, A. (author), Dekker, A. (author), Chun, M. (author), Benschop, A. (author), Priem, H. (author), Monna, B. (author), Nair, M. (author), Gupta, T. (author), Ackaert, G. (author), Bola, S. (author), Varvaringos, I. (author), Schroth, J. (author)A consortium of industrial and academic partners, coordinated by TNO, is working on the realization of a 620mm adaptive secondary mirror (ASM) for the University of Hawaii’s 2.2-meter telescope. The ASM consists of a 620mm-diameter slumped convex aspherical mirror shell, manipulated by 210 variable-reluctance actuators mounted on a light...conference paper 2022
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Nijenhuis, J.R. (author), Jonker, W.A. (author), Kamphues, F.G. (author)TNO, in close cooperation with Demcon, has designed the Laser Projection Subsystem (LPS) for ESO’s Extremely Large Telescope (ELT). The ELT LPS will consist of up to 8 laser projection subunits. The design is based on the Four Laser Guide Star Facility (4LGSF), built for the ESO Very Large Telescope (VLT) (5). The VLT AO system has been...conference paper 2022
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Derkink, F.M. (author), Doelman, D. (author), van Dam, D. (author), Brenny, B.J.M. (author), Speet, B.G. (author), van Brug, H. (author), Keller, C. (author), Snik, F. (author)While the concentrations of trace gases in Earth’s atmosphere were roughly constant for thousands of years, human activities such as the burning of fossil fuels have caused significant changes ever since the industrial revolution. The remote sensing of trace gases has proved to be a useful technique for mapping and monitoring on the global scale...conference paper 2022
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Mokkink, L.B. (author), de Vet, H. (author), Diemeer, S. (author), Eekhout, I. (author)Simulation studies were performed to investigate for which conditions of sample size of patients (n) and number of repeated measurements (k) (e.g., raters) the optimal (i.e., balance between precise and efficient) estimations of intraclass correlation coefficients (ICCs) and standard error of measurements (SEMs) can be achieved. Subsequently, we...article 2022
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Nijenhuis, J.R. (author), van der Heiden, N. (author), Jonker, W.A. (author)TMT will be a telescope with 492 segments making up the primary mirror. Each of these segments is supported with a highly sophisticated Segment Support Assembly (SSA) and each of them is to be tested for acceptance using a tool called SMATT. This tool will be mounted on top of each SSA and provides the load distribution applied to its 27 support...conference paper 2022
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- Koopmans, L. (author), Brouwer, C. (author) public lecture 2022
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Aiello, S. (author)The KM3NeT Collaboration is currently constructing a multi-site high-energy neutrino telescope in the Mediterranean Sea consisting of matrices of pressure-resistant glass spheres, each holding a set of 31 small-area photomultipliers. The main goals of the telescope are the observation of neutrino sources in the Universe and the measurement of...article 2022
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Stapel, J. (author), Happee, R. (author), Christoph, M. (author), van Nes, N. (author), Martens, M. (author)This study reports usage of supervised automation and driver attention from longitudinal naturalistic driving observations. Automation inexperienced drivers were provided with instrumented vehicles with adaptive cruise control (ACC) and lane keeping (LK) features (SAE level 2). Data was collected comparing one month of driving without support to...article 2022
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Schenk, D. (author)Over een aantal jaar moet op bijna 3 km hoogte, op een bergtop in Chili, ’s werelds grootste telescoop verrijzen. Deze Extremely Large Telescope (ELT) wordt gebouwd door de Europese Zuidelijke Sterrenwacht (ESO). De onderdelen worden momenteel op allerlei plekken ter wereld in elkaar gesleuteld, waaronder in Nederland. Zo zal TNO samen met het...article 2021
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van den Berg, S. (author), Dekker, P. (author), Otter, G.C.J. (author), Pelica Páscoa, M.I. (author), Dijkhuizen, N. (author)We have developed an SI-traceable narrow-band tunable radiance source based on an optical parametric oscillator (OPO) and an integrating sphere for the calibration of spectroradiometers. The source is calibrated with a reference detector over the ultraviolet/visible spectral range with an uncertainty of < 1%. As a case study, a CubeSat spectro...article 2021
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- Baker, J. (author), Baker, T. (author), Carbone, C. (author), Congedo, G. (author), Contaldi, C. (author), Dvorkin, I. (author), Gair, J. (author), Haiman, Z. (author), Mota, D.F. (author), Renzini, A. (author), Buis, E.J. (author), Cusin, G. (author), Ezquiaga, J.M. (author), Mueller, G. (author), Pieroni, M. (author), Quenby, J. (author), Ricciardone, A. (author), Saltas, I.D. (author), Shao, L. (author), Tamanini, N. (author), Tasinato, G. (author), Zumalacárregui, M. (author) article 2021
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Aiello, S. (author)The KM3NeT research infrastructure is under construction in the Mediterranean Sea. It consists of two water Cherenkov neutrino detectors, ARCA and ORCA, aimed at neutrino astrophysics and oscillation research, respectively. Instrumenting a large volume of sea water with ∼ 6200 optical modules comprising a total of ∼ 200,000 photomultiplier tubes...article 2021
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Vugteveen, J. (author), de Bildt, A. (author), Theunissen, M. (author), Reijneveld, M. (author), Timmerman, M.E. (author)In this study, validity aspects of the Strengths and Difficulties Questionnaire (SDQ) self-report and parent-report versions were assessed among Dutch adolescents aged 12 to 17 years (community sample: n = 962, clinical sample: n = 4,053). The findings mostly support the continued use of both SDQ versions in screening for psychosocial problems...article 2021
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Koopmans, L. (author), van der Klauw, M. (author), de Vroome, E.M.M. (author)Inclusief DIX vragenlijst 2020. Duurzame inzetbaarheid draait om de continue aansluiting tussen wat een werknemer kan en wil en wat het werk vraagt en biedt (Dorenbosch et al., 2012). Om duurzame inzetbaarheid van werkenden te behouden en bevorderen is het belangrijk om inzicht te krijgen in (voorspel-lers van) duurzame inzetbaarheid. De...report 2021
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Tirpitz, J.L. (author), Frieß, U. (author), Hendrick, F. (author), Alberti, C. (author), Allaart, M. (author), Apituley, A. (author), Bais, A. (author), Beirle, S. (author), Berkhout, S. (author), Bognar, K. (author), Bösch, T. (author), Bruchkouski, I. (author), Cede, A. (author), Chan, K.L. (author), den Hoed, M. (author), Donner, S. (author), Drosoglou, T. (author), Fayt, C. (author), Friedrich, M.M. (author), Frumau, A. (author), Gast, L. (author), Gielen, C. (author), Gomez-Martín, L. (author), Hao, N. (author), Hensen, A. (author), Henzing, B. (author), Hermans, C. (author), Jin, J. (author), Kreher, K. (author), Kuhn, J. (author), Lampel, J. (author), Li, A. (author), Liu, C. (author), Liu, H. (author), Ma, J. (author), Merlaud, A. (author), Peters, E. (author), Pinardi, G. (author), Piters, A. (author), Platt, U. (author), Puentedura, O. (author), Richter, A. (author), Schmitt, S. (author), Spinei, E. (author), stein Zweers, D. (author), Strong, K. (author), Swart, D. (author), Tack, F. (author), Tiefengraber, M. (author), van der Hoff, R. (author), van Roozendael, M. (author), Vlemmix, T. (author), Vonk, J. (author), Wagner, T. (author), Wang, Y. (author), Wang, Z. (author), Wenig, M. (author), Wiegner, M. (author), Wittrock, F. (author), Xie, P. (author), Xing, C. (author), Xu, J. (author), Yela, M. (author), Zhang, C. (author), Zhao, X. (author)The second Cabauw Intercomparison of Nitrogen Dioxide measuring Instruments (CINDI-2) took place in Cabauw (the Netherlands) in September 2016 with the aim of assessing the consistency of multi-axis differential optical absorption spectroscopy (MAX-DOAS) measurements of tropospheric species (NO2, HCHO, O3, HONO, CHOCHO and O4). This was achieved...article 2021
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Otter, G.C.J. (author), Day, J.P.R. (author), Di Iorio, E. (author), Pelica Páscoa, M.I. (author), Speet, B.G. (author), Dijkhuizen, N. (author), Snel, R.C. (author), van der Togt, O.E. (author)The cheapest method for an instrument to perform radiometric monitoring in orbit is to compare its radiometric response from a scene to the known radiance of that same scene. This is known as vicarious calibration. The known radiance of this scene comes mostly from other space instruments. The limiting factors of this vicarious calibration...conference paper 2021