Dr. Jorg Versluys Profile

Dr. Jorg Versluys

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Publications (12)

Proceedings Article | 12 July 2023 Open Access

PROBA3-ASPIICS coronagraph - alignment, performance tests and calibration

C. Galy, C. Thizy, J. Versluys, A. Baeke, A. Mazzoli, G. Capobianco, S. Fineschi, D. Loreggia, L. Zangrili, R. Melich, C. Leanerts, K. Fleury-Frenette, J. Jacobs

Proceedings Volume 12777, 1277767 (2023) https://doi.org/10.1117/12.2691118

KEYWORDS: Equipment, Calibration, Point spread functions, Frequency modulation, Fermium, Coronagraphy, Staring arrays, Optical alignment, Astronomical imaging, Vacuum chambers

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Proceedings Article | 11 June 2021 Open Access

The challenges of broadband performances within a compact imaging spectrometer: the ELOIS solution

Benoït Borguet, Vincent Moreau, Stefano Santandrea, Jorg Versluys, Arnuad Bourdoux

Proceedings Volume 11852, 118521E (2021) https://doi.org/10.1117/12.2599239

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Proceedings Article | 11 June 2021 Open Access

Formation flying performances simulator for the shadow position sensors of the ESA PROBA-3 mission

Gerardo Capobianco, Francesco Amadori, Silvano Fineschi, Alessandro Bemporad, Marta Casti, Davide Loreggia, Vladimiro Noce, Maurizio Pancrazzi, Federico Landini, Cedric Thizy, Raphael Rougeot, Damien Galano, Jorg Versluys

Proceedings Volume 11852, 118526P (2021) https://doi.org/10.1117/12.2600310

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Proceedings Article | 6 July 2018 Paper

Straylight analysis for the externally occulted Lyot solar coronagraph ASPIICS

Raphaël Rougeot, Claude Aime, Cristian Baccani, Silvano Fineschi, Rémi Flamary, Damien Galano, Camille Galy, Volker Kirschner, Federico Landini, Marco Romoli, Sergei Shestov, Cédric Thizy, Jorg Versluys, Andrei Zhukov

Proceedings Volume 10698, 106982T (2018) https://doi.org/10.1117/12.2313258

KEYWORDS: Diffraction, Coronagraphy, Sun, Telescopes, Sensors, Stray light analysis, Wave propagation, Wavefronts, Information operations, Space operations

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Proceedings Article | 6 July 2018 Paper

Development of ASPIICS: a coronagraph based on Proba-3 formation flying mission

Damien Galano, Alessandro Bemporad, Steve Buckley, Ileana Cernica, Vladimír Dániel, François Denis, Lieve de Vos, Silvano Fineschi, Camille Galy, Rafal Graczyk, Petra Horodyska, Jérôme Jacob, Richard Jansen, Nektarios Kranitis, Michal Kurowski, Michal Ladno, Philippe Ledent, Davide Loreggia, Radek Melich, Dominique Mollet, Michal Mosdorf, Antonios Paschalis, Radek Peresty, Munizer Purica, Bartlomiej Radzik, Miroslaw Rataj, Raphaël Rougeot, Lucas Salvador, Cédric Thizy, Jorg Versluys, Tomasz Walczak, Alicja Zarzycka, Joe Zender, Andrei Zhukov

Proceedings Volume 10698, 106982Y (2018) https://doi.org/10.1117/12.2312493

KEYWORDS: Coronagraphy, Sun, Sensors, Manufacturing, Satellites, Solar processes, Optical filters

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Proceedings Article | 20 November 2017 Open Access

Compact multispectral and hyperspectral imagers based on a wide field of view TMA

S. Grabarnik, M. Taccola, L. Maresi, V. Moreau, L. de Vos, J. Versluys, G. Gubbels

Proceedings Volume 10565, 1056505 (2017) https://doi.org/10.1117/12.2309101

KEYWORDS: Telescopes, Space telescopes, Imaging systems, Mirrors, Sensors, Hyperspectral imaging, Tolerancing, Single point diamond turning, Aluminum, Multispectral imaging

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Proceedings Article | 20 November 2017 Open Access

PROBA V multispectral imager: status

Alessandro Zuccaro Marchi, Jorg Versluys, Ignacio Torralba, Didier Beguin, Yvan Stockman, Ronald Kassel

Proceedings Volume 10564, 105640D (2017) https://doi.org/10.1117/12.2309045

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Proceedings Article | 20 November 2017 Open Access

Conceptual design of a stray light facility for Earth observation satellites

Y. Stockman, M. Hellin, S. Marcotte, E. Mazy, J. Versluys, M. François, M. Taccola, A. Zuccaro Marchi

Proceedings Volume 10564, 1056402 (2017) https://doi.org/10.1117/12.2309193

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Proceedings Article | 20 November 2017 Open Access

Baffles design of the PROBA-V wide FOV TMA

A. Mazzoli, P. Holbrouck, Y. Houbrechts, L. Maresi, Y. Stockman, M. Taccola, J. Versluys

Proceedings Volume 10565, 105650B (2017) https://doi.org/10.1117/12.2309106

KEYWORDS: Stray light, Mirrors, Short wave infrared radiation, Sensors, Space telescopes, Telescopes, Reflection, Astronomical imaging, Vegetation, Light scattering

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Proba-V payload is a successor of the Vegetation instrument, a multispectral imager flown on Spot-4 and subsequently on Spot-5, French satellites for Earth Observation and defence. The instrument, with its wide field of view, is capable of covering a swath of 2200 km, which, in combination with a polar low Earth orbit, guarantees a daily revisit.

The lifetime of Spot-5 expires in early 2013, and to ensure the continuity of vegetation data, BELSPO, the Belgian Federal Science Policy Office, supported the development of an instrument that could be flown on a Proba type satellite, a small satellite developed by the Belgian QinetiQ Space (previously known as Verhaert Space).

The challenge of this development is to produce an instrument responding to the same user requirements as Vegetation, but with an overall mass of about 30 kg, while the Vegetation instrument mass is 130 kg. This development had become feasible thanks to a number of new technologies that have been developed since the nineties, when Vegetation was first conceived, namely Single Point Diamond Turning fabrication of aspherical mirrors and efficient VNIR and SWIR detectors.

The Proba-V payload is based on three identical reflective telescopes using highly aspherical mirrors in a TMA (Three Mirrors Anastigmat) configuration. Each telescope covers a field of view of 34° to reach the required swath.

One of the challenges in the development of the PROBA-V instrument is the efficient reduction of stray light. Due to the mass and volume constraints it was not possible to implement a design with an intermediate focus to reduce the stray light. The analysis and minimization of the in-field stray light is an important element of the design because of the large FOV and the surface roughness currently achievable with the Single Point Diamond Turning.

This document presents the preliminary baffle layout designed for the Three Mirrors Anastigmatic (TMA) telescope developed for the Proba-V mission. This baffling is used to avoid 1^st order stray light i.e. direct stray light or through reflections on the mirrors. The stray light from the SWIR folding mirror is also studied. After these preliminary analyses the mechanical structure of the TMA is designed then verified in term of vignetting and stray light.

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Proceedings Article | 20 November 2017 Open Access

Development of a calibration facility for small EO sat as PROBA V

Y. Stockman, M.L. Hellin, P. Jamotton, E. Mazy, S. Marcotte, J. Versluys, M. François, M. Taccola, A. Zuccaro Marchi

Proceedings Volume 10564, 105643M (2017) https://doi.org/10.1117/12.2309042

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Proceedings Article | 25 September 2017 Open Access

Development of a calibration equipment for spectrometer qualification

C. Michel, B. Borguet, A. Boueé, P. Blain, A. Deep, V. Moreau, M. François, L. Maresi, A. Myszkowiak, M. Taccola, J. Versluys, Y. Stockman

Proceedings Volume 10562, 105624T (2017) https://doi.org/10.1117/12.2296101

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Proceedings Article | 24 October 2013 Paper

Stray light testing of the PROBA V payload

Y. Stockman, L. Aballea, A. Baeke, D. Beghuin, M. François, M-L. Hellin, S. Marcotte, E. Mazy, M. Taccola, J. Versluys

Proceedings Volume 8889, 888911 (2013) https://doi.org/10.1117/12.2028250

KEYWORDS: Stray light, Satellites, Sensors, Point spread functions, Collimators, Short wave infrared radiation, Data acquisition, Mirrors, Imaging systems, Data modeling

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Showing 5 of 12 publications

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