Dr. Radek Melich Profile

Dr. Radek Melich

PhD Student

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Publications (22)

Proceedings Article | 12 July 2023 Open Access

Open Access

Paper

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

Open Access

Presentation + Paper

In-flight optical performance assessment for the Metis solar coronagraph

Vania Da Deppo, Paolo Chioetto, Vincenzo Andretta, Chiara Casini, Fabio Frassetto, Alessandra Slemer, Paola Zuppella, Marco Romoli, Silvano Fineschi, Petr Heinzel, Giampiero Naletto, Gianalfredo Nicolini, Daniele Spadaro, Marco Stangalini, Luca Teriaca, Alessandro Bemporad, Marta Casti, Michele Fabi, Catia Grimani, Klaus Heerlein, Giovanna Jerse, Federico Landini, Alessandro Liberatore, Enrico Magli, Radek Melich, Maurizio Pancrazzi, Maria-G. Pelizzo, Paolo Romano, Clementina Sasso, Thomas Straus, Roberto Susino, Michela Uslenghi, Cosimo Antonio Volpicelli

Proceedings Volume 11852, 1185210 (2021) https://doi.org/10.1117/12.2599220

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Proceedings Article | 30 December 2019 Paper

Paper

Ion beam figuring with using Einzel lens

Vasyl Karabyn, Jaroslav Polák, František Procháska, Radek Melich

Proceedings Volume 11385, 1138508 (2019) https://doi.org/10.1117/12.2542822

KEYWORDS: Ion beams, Ions, Ion beam finishing, Electrodes, Surface finishing, Particles, Beam controllers, Argon, Optical components, Precision optics

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Proceedings Article | 12 July 2019 Open Access

Open Access

Paper

Straylight analysis on ASPIICS, PROBA-3 coronagraph

C. Galy, C. Thizy, Y. Stockman, D. Galano, R. Rougeot, R. Melich, S. Shestov, F. Landini, A. Zukhov, V. Kirschner, P. Horodyska, S. Fineschi

Proceedings Volume 11180, 111802H (2019) https://doi.org/10.1117/12.2536008

KEYWORDS: Sensors, Coronagraphy, Diffraction, Scattering, Solar processes, Signal detection, Lenses, Sun, Reflectivity, Optical filters

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PROBA-3 is a mission devoted to the in-orbit demonstration (IOD) of precise formation flying (F²) techniques and technologies for future ESA missions. The mission includes two spacecraft. One of them will act as an external occulter for scientific observations of the solar corona from the other spacecraft, which will hold the ASPIICS coronagraph instrument, under CSL responsibility.

The ASPIICS instrument on PROBA-3 looks at the solar corona through a refractive telescope, able to select 3 different spectral bands: Fe XIV line @ 530.4nm, He I D3 line @587.7nm, and the white-light spectral band [540;570nm]. The external occulter being located at ~ 150 meters from the instrument entrance, will allow ASPIICS to observe the corona really close to the solar limb, probably closer than any internally or externally occulted coronagraph ever observed.

This paper will present the straylight model and analyses carried out by CSL. A first specificity of the analysis is that the scene on the useful Field of View (FOV) is the solar corona which has a brightness dynamic range as high as 10³ between the close corona, close to 1 solar radius (Rsun), and the “distant” corona around 3RSun. The specifications are very stringent for this type of instrument. A consensus was found and will be presented regarding the expected straylight within the FOV. It will also be shown that to achieve realistic estimations it is required to take into account the exact location of the created straylight as well as the entrance field.

The second specificity that had to be analyzed is that the diffraction from the solar disk by the external occulter enters the instrument un-obstructed until the internal occulter, and with a brightness 100 times higher than the close corona (~1RSun) brightness. The simulation of this diffraction as well as its propagation inside the ASPIICS telescope creating additional straylight, had to be carefully established in order to give realistic results of its impact on the performances while being actually possible to compute.

Proceedings Article | 6 July 2018 Paper

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 | 29 August 2017 Presentation + Paper

Presentation + Paper

Optical measurements of the mirrors and of the interferential filter of the Metis coronagraph on Solar Orbiter

P. Sandri, P. Sarra, P. Radaelli, D. Morea, R. Melich, A. Berlicki , E. Antonucci, M. Castronuovo, S. Fineschi, G. Naletto, G. Nicolini, M. Romoli

Proceedings Volume 10397, 1039716 (2017) https://doi.org/10.1117/12.2275416

KEYWORDS: Mirrors, Wavefronts, Wavefront sensors, Interferometers, Coronagraphy, Spherical lenses, Ultraviolet radiation, Sun, Optical filters, Integrated optics

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Proceedings Article | 11 November 2016 Paper

Paper

Scratch and dig analysis for Metis mirrors surfaces defects evaluation

M. Špína, F. Procháska, R. Melich

Proceedings Volume 10151, 101510W (2016) https://doi.org/10.1117/12.2256634

KEYWORDS: Optics manufacturing, Mirrors, Space mirrors, Surface conduction electron emitter displays, Inspection, Microscopes, Coronagraphy, Visibility, Standards development, Objectives

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Proceedings Article | 11 November 2016 Paper

Paper

FEM analysis of bonding process used for minimization of deformation of optical surface under Metis coronagraph mirrors manufacturing

F. Procháska, T. Vít, O. Matoušek, R. Melich

Proceedings Volume 10151, 101510P (2016) https://doi.org/10.1117/12.2256705

KEYWORDS: Optics manufacturing, Mirrors, Finite element methods, Surface finishing, Polishing, Temperature metrology, Cements, Photovoltaics, Aluminum, Zerodur

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Proceedings Article | 11 November 2016 Paper

Paper

Design, manufacturing, performance and application of wide angle aspherical achromatic doublet

Radek Melich, František Procháska, David Tomka, Zdeněk Rail, Jiří Bartoňíček, Jan Pleštil, Bohdan Šrajer

Proceedings Volume 10151, 1015118 (2016) https://doi.org/10.1117/12.2257511

KEYWORDS: Optics manufacturing, Lens design, Aspheric lenses, Design for manufacturability, Tolerancing, Polishing, Surface finishing, Glasses, Manufacturing, Headlamps

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Proceedings Article | 29 July 2016 Paper

Paper

Recent achievements on ASPIICS, an externally occulted coronagraph for PROBA-3

Etienne Renotte, Steve Buckley, Ileana Cernica, François Denis, Richard Desselle, Lieve De Vos, Silvano Fineschi, Karl Fleury-Frenette, Damien Galano, Camille Galy, Jean-Marie Gillis, Estelle Graas, Rafal Graczyk, Petra Horodyska, Nektarios Kranitis, Michal Kurowski, Michal Ladno, Sylvie Liebecq, Davide Loreggia, Idriss Mechmech, Radek Melich, Dominique Mollet, Michał Mosdorf, Mateusz Mroczkowski, Kevin O’Neill, Karel Patočka, Antonis Paschalis, Radek Peresty, Bartlomiej Radzik, Miroslaw Rataj, Lucas Salvador, Jean-Sébastien Servaye, Yvan Stockman, Cédric Thizy, Tomasz Walczak, Alicja Zarzycka, Andrei Zhukov

Proceedings Volume 9904, 99043D (2016) https://doi.org/10.1117/12.2232695

KEYWORDS: Coronagraphy, Sun, Space operations, Image compression, Sensors, Manufacturing, Solar processes, Surface plasmons, Staring arrays, Information operations

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Proceedings Article | 28 September 2015 Paper

Paper

Design status of ASPIICS, an externally occulted coronagraph for PROBA-3

Etienne Renotte, Andres Alia, Alessandro Bemporad, Joseph Bernier, Cristina Bramanti, Steve Buckley, Gerardo Capobianco, Ileana Cernica, Vladimir Dániel, Radoslav Darakchiev, Marcin Darmetko, Arnaud Debaize, François Denis, Richard Desselle, Lieve de Vos, Adrian Dinescu, Silvano Fineschi, Karl Fleury-Frenette, Mauro Focardi, Aurélie Fumel, Damien Galano, Camille Galy, Jean-Marie Gillis, Tomasz Górski, Estelle Graas, Rafał Graczyk, Konrad Grochowski, Jean-Philippe Halain, Aline Hermans, Russ Howard, Carl Jackson, Emmanuel Janssen, Hubert Kasprzyk, Jacek Kosiec, Serge Koutchmy, Jana Kovačičinová, Nektarios Kranitis, Michał Kurowski, Michał Ładno, Philippe Lamy, Federico Landini, Radek Lapáček, Vít Lédl, Sylvie Liebecq, Davide Loreggia, Brian McGarvey, Giuseppe Massone, Radek Melich, Agnes Mestreau-Garreau, Dominique Mollet, Łukasz Mosdorf, Michał Mosdorf, Mateusz Mroczkowski, Raluca Muller, Gianalfredo Nicolini, Bogdan Nicula, Kevin O'Neill, Piotr Orleański, Marie-Catherine Palau, Maurizio Pancrazzi, Antonios Paschalis, Karel Patočka, Radek Peresty, Irina Popescu, Pavel Psota, Miroslaw Rataj, Jan Rautakoski, Marco Romoli, Roman Rybecký, Lucas Salvador, Jean-Sébastien Servaye, Cornel Solomon, Yvan Stockman, Arkadiusz Swat, Cédric Thizy, Michel Thomé, Kanaris Tsinganos, Jim Van der Meulen, Nico Van Vooren, Tomáš Vit, Tomasz Walczak, Alicja Zarzycka, Joe Zender, Andrei Zhukov

Proceedings Volume 9604, 96040A (2015) https://doi.org/10.1117/12.2186962

KEYWORDS: Coronagraphy, Sensors, Sun, Solar processes, Field programmable gate arrays, Light emitting diodes, Electronics, Staring arrays, Space operations, Information operations

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Proceedings Article | 21 September 2015 Paper

Paper

Design and modelisation of ASPIICS optics

C. Galy, S. Fineschi, D. Galano, R. Howard, C. Kintziger, V. Kirschner, S. Koutchmy, P. Lamy, A. Mazzoli, R. Melich, A. Mestreau-Garreau, E. Renotte, J. S. Servaye, Y. Stockman, C. Thizy, A. Zhukov

Proceedings Volume 9604, 96040B (2015) https://doi.org/10.1117/12.2188404

KEYWORDS: Coronagraphy, Information operations, Diffraction, Sun, Optical design, Optical filters, Sensors, Optics manufacturing, Vignetting, Solar processes

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Proceedings Article | 7 January 2015 Paper

Paper

Design and realization of an aspherical doublet

Radek Melich, Milan Matela, Frantisek Prochaska, Pavel Psota, Ondrej Matousek, David Tomka

Proceedings Volume 9442, 94420U (2015) https://doi.org/10.1117/12.2175915

KEYWORDS: Tolerancing, Surface finishing, Lenses, Lens design, Wavefronts, Optical design, Spherical lenses, Manufacturing, Polishing, Diffraction

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Proceedings Article | 7 January 2015 Paper

Paper

High-throughput optical system for HDES hyperspectral imager

Jan Václavík, Radek Melich, Pavel Pintr, Jan Pleštil

Proceedings Volume 9442, 94421D (2015) https://doi.org/10.1117/12.2175935

KEYWORDS: Imaging systems, Staring arrays, Objectives, Hyperspectral imaging, Modulation transfer functions, Germanium, Infrared imaging, Mirrors, Aspheric lenses, Spectroscopy

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Proceedings Article | 7 January 2015 Paper

Paper

Numerical simulation of deformation and figure quality of precise mirror

Tomáš Vit, Radek Melich, Paolo Sandri

Proceedings Volume 9442, 94421F (2015) https://doi.org/10.1117/12.2176336

KEYWORDS: Mirrors, Adhesives, Numerical simulations, Finite element methods, 3D modeling, Tolerancing, Zerodur, Optics manufacturing, Optical mounts, Mirror pointing

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Proceedings Article | 5 September 2014 Paper

Paper

An extreme ultraviolet interferometer suitable to generate dense interference pattern

K. Kolacek, J. Schmidt, J. Straus, O. Frolov, V. Prukner, R. Melich

Proceedings Volume 9206, 92060D (2014) https://doi.org/10.1117/12.2061858

KEYWORDS: Mirrors, Interferometers, Extreme ultraviolet, Silicon, Reflectivity, Beam splitters, Grazing incidence, Solids, Multilayers, Fusion energy

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Proceedings Article | 2 August 2014 Paper

Paper

ASPIICS: an externally occulted coronagraph for PROBA-3: Design evolution

Etienne Renotte, Elena Carmen Baston, Alessandro Bemporad, Gerardo Capobianco, Ileana Cernica, Radoslav Darakchiev, François Denis, Richard Desselle, Lieve De Vos, Silvano Fineschi, Mauro Focardi, Tomasz Górski, Rafał Graczyk, Jean-Philippe Halain, Aline Hermans, Carl Jackson, Christian Kintziger, Jacek Kosiec, Nektarios Kranitis, Federico Landini, Vít Lédl, Giuseppe Massone, Alexandra Mazzoli, Radek Melich, Dominique Mollet, Michał Mosdorf, Gianalfredo Nicolini, Bogdan Nicula, Piotr Orleański, Marie-Catherine Palau, Maurizio Pancrazzi, Antonis Paschalis, Radek Peresty, Jean-Yves Plesseria, Miroslaw Rataj, Marco Romoli, Cédric Thizy, Michel Thomé, Kanaris Tsinganos, Ryszard Wodnicki, Tomasz Walczak, Andrei Zhukov

Proceedings Volume 9143, 91432M (2014) https://doi.org/10.1117/12.2056784

KEYWORDS: Coronagraphy, Sensors, Field programmable gate arrays, Electronics, Sun, Surface plasmons, Solar processes, Satellites, Space operations, Polarizers

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Proceedings Article | 3 May 2013 Paper

Paper

A new method of determination of ablation threshold contour in the spot of focused XUV laser beam of nanosecond duration

Karel Kolacek, Jiri Schmidt, Jaroslav Straus, Oleksandr Frolov, Václav Prukner, Radek Melich, Andrei Choukourov

Proceedings Volume 8777, 87770N (2013) https://doi.org/10.1117/12.2020261

KEYWORDS: Laser ablation, Interferometers, Polymethylmethacrylate, Mirrors, Extreme ultraviolet, Diffraction, Laser damage threshold, Beam splitters, Pulsed laser operation, Particles

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Proceedings Article | 15 October 2012 Paper

Paper

Novel design of a large x-ray optical system for astrophysical application

L. Pina, R. Hudec, V. Tichy, A. Inneman, D. Cerna, J. Marsik, V. Marsikova, W. Cash, A. Shipley, B. Zeiger, T. Rogers, R. Melich

Proceedings Volume 8502, 85020D (2012) https://doi.org/10.1117/12.929591

KEYWORDS: X-rays, X-ray optics, Mirrors, Semiconducting wafers, Wafer-level optics, Optics manufacturing, Silicon, Optical fabrication, X-ray telescopes, Space telescopes

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Proceedings Article | 23 July 2008 Paper

Paper

Multi-wavelength Solc birefringent filter

Radek Melich, Zbyněk Melich, Ivan Šolc

Proceedings Volume 7018, 701854 (2008) https://doi.org/10.1117/12.788814

KEYWORDS: Iron, Optical filters, Chemical elements, Transmittance, Sun, Tunable filters, Glasses, Telescopes, Dielectric filters, Imaging systems

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Proceedings Article | 12 April 2007 Paper

Paper

Influence of small deformation of optical element surfaces on optical system imaging quality

Zbynek Melich, Radek Melich

Proceedings Volume 6609, 66091F (2007) https://doi.org/10.1117/12.739684

KEYWORDS: Optical components, Imaging systems, Optical imaging, Optical transfer functions, Tolerancing, Glasses, Optics manufacturing, Image quality, Lithium, Refractive index

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Proceedings Article | 12 April 2007 Paper

Paper

Influence of image doubling on modulation transfer function of optical systems

Radek Melich, Zbynek Melich

Proceedings Volume 6609, 66091E (2007) https://doi.org/10.1117/12.739682

KEYWORDS: Prisms, Modulation transfer functions, Imaging systems, Image quality, Optical transfer functions, Point spread functions, Tolerancing, Diffraction, Optical imaging, Optical components

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Showing 5 of 22 publications

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