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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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Bowens-Rubin, R. (author), Bos, A. (author), Hinz, P. (author), Holden, B. (author), Radovan, M. (author)As we enter the era of TESS and JWST, instrumentation that can carry out radial velocity measurements of exoplanet systems is in high demand. We will address this demand by upgrading the UC Lick Observatory’s 2.4-meter Automated Planet Finder (APF) telescope with an adaptive optics (AO) system. The AO upgrade will be directly integrated into the...conference paper 2022
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Kuiper, S. (author), Bos, A. (author), de Vreugd, J. (author), Witvoet, G. (author), Dekker, A. (author), Kamphues, F.G. (author), Slegtenhorst, G.F. (author), Jonker, W.A. (author), Maniscalco, M.P. (author), Femenía-Castella, B. (author), Núñez Cagigal, M. (author), Bienes Pérez, J. (author), Cózar-Castellano, J. (author), González-Cava, J.M. (author), Mato, A. (author), Soler Trujillo, A.M. (author), Vega Reyes, N. (author)This paper describes the preliminary design of the Adaptive Secondary Mirror (ASM) for the European Solar Telescope (EST), as designed by TNO. This ASM will contain 1950 actuators over an optical aperture of Ø80cm. The mirror-shell of this ASM is concave with a radius of 2.156m and has a thickness of 2.5mm. To cope with the high optical heat...conference paper 2022
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Chun, M.R. (author), Ryan, A. (author), Zhang, R. (author), Kuiper, S. (author), Ackaert, G. (author), Baranec, C. (author), Baeten, M.J.J. (author), Bos, A. (author), Bowens-Rubin, R. (author), Dekker, A. (author), Dungee, R. (author), Gupta, T. (author), Hinz, P. (author), Jonker, W.A. (author), Kamphues, F.G. (author), Lai, O. (author), Lu, J. (author), Maniscalco, M.P. (author), Monna, B. (author), Nair, M. (author), Nijenhuis, J.R. (author), Priem, H. (author), Vogel, P.A. (author)We report on progress at the University of Hawaii on the integration and testing setups for the adaptive secondary mirror (ASM) for the University of Hawaii 2.2-meter telescope on Maunakea, Hawaii. We report on the development of the handling fixtures and alignment tools we will use along with progress on the optical metrology tools we will use...conference paper 2022
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Jonker, W.A. (author), Kuiper, S. (author), Nijenhuis, J.R. (author), Dekker, A. (author), Bos, A. (author), van de Ven, E.A. (author), Chun, M. (author), Priem, H. (author), Breukers, M. (author)An adaptive secondary mirror (ASM) is currently being developed for the UH2.2 telescope, consisting of a slumped 620mm convex aspherical facesheet, manipulated by 210 variable-reluctance actuators and supported on a siliconaluminium alloy support structure. The total power dissipation of the actuators is expected to be under 3 Watts. The ASM...conference paper 2020
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Fritz, E.C. (author), van der Valk, N.C.J. (author), Witvoet, G. (author), Bos, A. (author), de Man, H. (author), Crowcombe, W.E. (author), van der Heijden, N. (author), Kerkhof, P.J. (author)Cube satellite (cubesat) is a specific realization of a smallsat that is characterized by its volume changing in increments of 1dm3, or 1U. A (popular) 3U format cubesat is furthermore classified as a Nano satellite, as it typically has a mass between 1 and 10 kg. Within CubeSATs expanding the downlink data bandwidth is one of the central...other 2019
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Bos, A. (author), Fryda, L.E. (author), van der Waal, J.C. (author), Aranda Almansa, G. (author), van Zandvoort, I. (author), Lok, C.M. (author), van Doorn, J. (author), van der Klink, G. (author), Energieonderzoek Centrum Nederland (author)‘Blue Bird - Concomitant generation of energy and chemicals from biomass waste streams’ (5.4111) is a 2-year TKI innovation project financed by RVO (reference TEBE 115001) in which a number of technologies have been developed for the recovery of valuable compounds (BTX, ethylene) from gasification product gas in co-production schemes. The...report 2018
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Rabou, L.P.L.M. (author), Bos, A. (author), Vreugdenhil, B.J. (author), van der Waal, J.C. (author), Aranda Almansa, G. (author), van Zandvoort, I. (author), van Doorn, J. (author), Energieonderzoek Centrum Nederland (author)Ethylene and benzene make only a small part of the total volume of producer gas ( 5% vol.), but together they account for 25% of the gas energy content. These compounds not only have a detrimental effect on catalysts e.g. in SNG production, but they have also a higher economic value than the main product, SNG. Thus, the separation and recovery...report 2017
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Heijmans, J.A.C. (author), Nijenhuis, J.R. (author), Bos, A. (author)The E-ELT is the European Extremely Large Telescope with a primary mirror of 39 meters that is being developed by ESO for the European astronomical community and ESO members. For the realisation of the E-ELT, TNO Space and Scientific Instrumentation proposes several technical contributions. These are, among others, the mirror support structure,...article 2016
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- Rabou, L.P.L.M. (author), Bos, A. (author), Vreugdenhil, B.J. (author), van der Waal, J.C. (author), van Zandvoort, I. (author), Energieonderzoek Centrum Nederland (author) conference paper 2016
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Bos, A. (author), Witvoet, G. (author), Pereboom, H.P. (author), Steinbuch, M. (author)The Auto-collimating Flat Mirror Assembly (AFMA) simulated the rotation of the Gaia satellite around its vertical axis. As such, it was one of the most important ground support equipment tools to test the payload performance of the Gaia mission. Although the performance of TNO's design during commissioning was excellent, one of the challenges of...conference paper 2016
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Bos, A. (author), Henselmans, R. (author), Rosielle, P.C.J.N. (author), Steinbuch, M. (author)To enable important scientific discoveries, ESO has defined a new ground-based telescope: the European Extremely Large Telescope (E-ELT). The baseline design features a telescope with a 39-m-class primary mirror (M1), making it the largest and most powerful telescope in the world. The M1 consists of 798 hexagonal segments, each about 1.4 m wide,...article 2015
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Bos, A. (author), Henselmans, R. (author), Rosielle, N. (author), Steinbuch, M. (author)EXTREMELY LARGE TELESCOPES. The planned extremely large telescope observatories with segmented giant primary mirrors will require metrology with nanometer accuracy. The two extremely large ground telescopes, the European Extremely Large Telescope (E-ELT [2]) and Thirty Meter Telescope (TMT [3]), feature telescopes with 39 meter and 30 meter...conference paper 2015
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Bos, A. (author), Henselmans, R. (author), Rosielle, P.C.J.N. (author), Steinbuch, M. (author), te Voert, M.J.A. (author)The baseline design of the European Extremely Large Telescope features a telescope with a 39-meter-class primary mirror (M1), consisting of 798 hexagonal segments. A measurement machine design is presented based on a non-contact single-point scanning technique, capable of measuring the form error of each segment with nanometer uncertainty, fast,...conference paper 2014
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Rabou, L.P.L.M. (author), Bos, A. (author)--article 2012
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den Ridder, K. (author), Tuiters, Y. (author), van der Tuijn, Y. (author), van Bon, A. (author), Bolle, F. (author), van den Bos, A. (author), Brinkhof, K. (author), van den Elzen, G. (author), Fledderus-Plaisier, C. (author), Geurts, L. (author), Gooskens, F. (author), van Harten-Krouwel, D. (author), Hormann, O. (author), Kievit, L. (author), Kluijver, B. (author), Kramer, Y. (author), Mak, M. (author), Mintjes-de Groot, J. (author), Ram, C. (author), Smit, M. (author), Schoone-Harmsen, M. (author), van der Starre, C. (author), van Valkenburg, M. (author), Vermaas, A. (author), Vesseur, J. (author), Zeeman, G.G. (author), Zwart, D. (author), TNO Kwaliteit van Leven (author)Verpleegkundige Martine werkt op de short-stayafdeling van een ziekenhuis. Op dit moment heeft ze samen met een nauwelijks ingewerkte leerlingverpleegkundige de zorg voor zestien patiënten; draagt ze de afdelingstelefoon bij zich en staat ze op het punt de medicijnen uit te delen aan haar patiënten. Maar helaas kan ze met haar medicijnkar niet...book 2010
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Rabou, L.P.L.M. (author), Bos, A. (author), Zwart, R.W.R. (author), Vreugdenhil, B.J. (author)Biomass gasification at temperatures below 1300 C yields producer gas with a range of heavy hydrocarbons. These compounds, collectively known as tar, cause fouling and emission problems in equipment using the producer gas. This paper gives an overview of the work performed at the Energy research Centre of The Netherlands (ECN) on tar measurement...article 2010
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Breebaart, L. (author), Bos, A. (author), Grant, T. (author), Neerincx, M. (author), Smets, N. (author), Lindenberg, J. (author), Soler, A.O. (author), Brauer, U. (author), Wolff, M. (author), TNO Defensie en Veiligheid (author)This article describes the authors' experiences with a pragmatic, ontology-based approach to data portability and knowledge sharing, as used in the first Mission Execution Crew Assistant (MECA) Proof-of-concept demonstrator software. © 2009 IEEE.conference paper 2009
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Energieonderzoek Centrum Nederland (author), Rabou, L.P.L.M. (author), Bos, A. (author), van der Drift, A. (author), van der Meijden, C.M. (author), Zwart, R.W.R. (author), Smit, R. (author), Lievens, C. (author), Winkelman, J. (author), Balegedde Ramachandran, R.P. (author), Vreugdenhil, B.J. (author)-report 2009
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Rabou, L.P.L.M. (author), Bos, A. (author), Zwart, R.W.R. (author), Vreugdenhil, B.J. (author)-article 2009
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