Dr. Claudio Melo Profile

Dr. Claudio Melo

at European Southern Observatory

SPIE Involvement:

Author

Publications (7)

Proceedings Article | 18 July 2024 Poster + Paper

NIRPS near-infrared spectrograph: AITV phase at ESO3.6m/La Silla

Lison Malo, Frédérique Baron, Anne-Sophie Poulin-Girard, Philippe Vallée, Jonathan St-Antoine, Denis Brousseau, Hugues Auger, Vladimir Reshetov, François Wildi, Michaël Sordet, Étienne Artigau, René Doyon, Simon Thibault, François Bouchy, Neil Cook, Yolanda Frensch, Gaspare Lo Curto, Gérard Zins, Danuta Sosnowska, Ivan Wevers, Dan Kerley, Guillaume Allain, Romain Allart, Norbert Hubin, Charles Cadieux, Andres Carmona, Zalpha Challita, Nolan Grieves, Olivier Hernandez, Thomas Vandal, Nicolas Blind, Lucile Mignon, Louise Nielsen, Francesco Pepe, Xavier Dumusque, Christophe Lovis, Bruno L. Canto Martins, José Renan de Medeiros, Xavier Delfosse, Nuno Santos, Jonay González-Hernández, Rafael Rebolo, Gregg Wade, Manuel Abreu, Susana Barros, Luc Bazinet, Isabelle Boisse, Xavier Bonfils, Vincent Bourrier, Sébastien Bovay, Christopher Broeg, Vincent Bruniquel, Alexandre Cabral, Yann Carteret, Bruno Chazelas, Ryan Cloutier, João Coelho, Marion Cointepas, Uriel Conod, Nicolas Cowan, Eduardo Cristo, Joao Gomes da Silva, Laurie Dauplaise, Roseane de Lima Gomes, Elisa Delgado-Mena, David Ehrenreich, Joao Faria, Pedro Figueira, Thierry Forveille, Jonathan Gagne, Frederic Genest, Ludovic Genolet, Félix Gracia Témich, Melissa Hobson, Jens Hoeijmakers, Vigneshwaran Krishnamurthy, David Lafreniere, Pierrot Lamontagne, Pierre Larue, Henry Leath, Izan Leão, Olivia Lim, Allan Martins, Claudio Melo, Yuri Messias, Leslie Moranta, Christoph Mordasini, Khaled Al Moulla, Dany Mounzer, Alexandrine L’Heureux, Nicola Nari, Ares Osborn, Lena Parc, Luca Pasquini, Vera Passegger, Stefan Pelletier, Celine Peroux, Caroline Piaulet, Mykhaylo Plotnykov, José Luis Rasilla, Mirsad Sarajlic, Alex Segovia, Julia Seidel, Damien Segransan, Ana Rita Costa Silva, Avidaan Srivastava, Atanas Stefanov, Alejandro Suárez Mascareño, Marcio Teixeira, Stephane Udry, Diana Valencia, Valentina Vaulato, Joost Wardenier, Bachar Wehbé, Drew Weisserman, Benjamin Kung, Anne Boucher, Robin Schnell, Armin Silber, Ivo Saviane, Emanuela Pompei, Peter Sinclaire

Proceedings Volume 13096, 1309646 (2024) https://doi.org/10.1117/12.3020168

KEYWORDS: Vacuum, Spectrographs, Thermal stability, Sensors, Optical components, Lanthanum, Equipment, Cryogenics, Design, Control systems

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Proceedings Article | 18 July 2024 Presentation + Paper

NIRPS first light and early science: breaking the 1 m/s RV precision barrier at infrared wavelengths

Étienne Artigau, François Bouchy, René Doyon, Frédérique Baron, Lison Malo, François Wildi, Franceso Pepe, Neil Cook, Simon Thibault, Vladimir Reshetov, Xavier Dumusque, Christophe Lovis, Danuta Sosnowska, Bruno Canto Martins, Jose Renan De Medeiros, Xavier Delfosse, Nuno Santos, Rafael Rebolo, Manuel Abreu, Guillaume Allain, Romain Allart, Hugues Auger, Susana Barros, Luc Bazinet, Nicolas Blind, Isabelle Boisse, Xavier Bonfils, Vincent Bourrier, Sébastien Bovay, Christopher Broeg, Denis Brousseau, Vincent Bruniquel, Alexandre Cabral, Charles Cadieux, Andres Carmona, Yann Carteret, Zalpha Challita, Bruno Chazelas, Ryan Cloutier, João Coelho, Marion Cointepas, Uriel Conod, Nicolas Cowan, Eduardo Cristo, João Gomes da Silva, Laurie Dauplaise, Roseane Lima Gomes, Elisa Delgado-Mena, David Ehrenreich, João Faria, Pedro Figueira, Thierry Forveille, Yolanda Frensch, Jonathan Gagné, Frédéric Genest, Ludovic Genolet, Jonay González Hernández, Felix Gracia Temich, Nolan Grieves, Olivier Hernandez, Melissa Hobson, Jens Hoeijmakers, Dan Kerley, Vigneshwaran Krishnamurthy, David Lafrenière, Pierrot Lamontagne, Pierre Larue, Henry Leaf, Izan Leão, Olivia Lim, Gaspare Lo Curto, Allan Martins, Claudio Melo, Yuri Messias, Lucile Mignon, Leslie Moranta, Christoph Mordasini, Khaled Al Moulla, Dany Mounzer, Alexandrine L'Heureux, Nicola Nari, Louise Nielsen, Ares Osborn, Lena Parc, Luca Pasquini, Vera Passegger, Stefan Pelletier, Céline Peroux, Caroline Piaulet, Mykhaylo Plotnykov, Anne-Sophie Poulin-Girard, José Luis Rasilla, Jonathan Saint-Antoine, Mirsad Sarajic, Alex Segovia, Julia Seidel, Damien Ségransan, Ana Rita Silva, Avidaan Srivastava, Atanas Stefanov, Alejandro Suárez Mascareño, Michael Sordet, Márcio Teixeira, Sféphane Udry, Diana Valencia, Philippe Vallée, Thomas Vandal, Valentina Vaulato, Gregg Wade, Joost Wardenier, Bachar Wehbé, Drew Weisserman, Ivan Wevers, Gérard Zins

Proceedings Volume 13096, 130960C (2024) https://doi.org/10.1117/12.3018994

KEYWORDS: Planets, Exoplanets, Adaptive optics, Spectrographs, Calibration, Equipment, Telescopes, Infrared astronomy

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Proceedings Article | 13 December 2020 Presentation

NIRPS: status updates and project overview

Étienne Artigau, François Bouchy, René Doyon, Claudio Melo, Xavier Delfosse, François Wildi, Christophe Lovis, Pedro Figueira, Bruno Canto Martins, Jonay González Hernández, Simon Thibault, Vladimir Reshetov, Francesco Pepe, Nuno Santos, José Renan de Medeiros, Rafael Rebolo, Neil Cook, Nicolas Blind, Isabelle Boisse, Denis Brousseau, Uriel Conod, David Lafrenière, Izan Leão, Lison Malo, Mathieu Ouellet, Anne-Sophie Poulin-Girard, Stéphane Udry, Philippe Vallée, Andrew Cumming, Michael Sordet, Allan De Medeiros

Proceedings Volume 11447, 114471K (2020) https://doi.org/10.1117/12.2561090

KEYWORDS: Spectrographs, Telescopes, Lanthanum, Planets, Spectroscopes, Exoplanets, Aerospace engineering, Space operations, James Webb Space Telescope

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Proceedings Article | 9 July 2018 Presentation

The near-infrared planet searcher (NIRPS) (Conference Presentation)

Rene Doyon, François Bouchy, Étienne Artigau, Olivier Hernandez, François Wildi, Claudio Melo, Philippe Vallée, Simon Thibault, Xavier Delfosse, Christophe Lovis, Francesco Pepe, Pedro Figueira, Vladimir Reshetov, Nuno Santos, Lison Malo, Mathieu Ouellet, Denis Brousseau, Rafael Rebolo-López, Nicolas Blind, Uriel Condo, Stéphane Dry, Jonay González Hernández, Bruno Chazelas, Bruno Canto Martins, Jose de Medeiros

Proceedings Volume 10702, 1070210 (2018) https://doi.org/10.1117/12.2313050

KEYWORDS: Planets, Infrared telescopes, Infrared radiation, Spectrographs, Telescopes, Lanthanum

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Proceedings Article | 1 September 2017 Paper

NIRPS: an adaptive-optics assisted radial velocity spectrograph to chase exoplanets around M-stars

F. Wildi, N. Blind, V. Reshetov, O. Hernandez, L. Genolet, U. Conod, M. Sordet, A. Segovilla, J. L. Rasilla, D. Brousseau, S. Thibault, B. Delabre, T. Bandy, M. Sarajlic, A. Cabral, S. Bovay, Ph. Vallée, F. Bouchy, R. Doyon, E. Artigau, F. Pepe, J. Hagelberg, C. Melo, X. Delfosse, P. Figueira, N. C. Santos, J. I. González Hernández, J. R. de Medeiros, R. Rebolo, Ch. Broeg, W. Benz, I. Boisse, L. Malo, U. Käufl, L. Saddlemyer

Proceedings Volume 10400, 1040018 (2017) https://doi.org/10.1117/12.2275660

KEYWORDS: Spectrographs, Adaptive optics, Planets, Exoplanets, Velocity measurements, Stars, Spectroscopy, Optical fibers, Space operations, Interference (communication)

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Since 1st light in 2002, HARPS has been setting the standard in the exo-planet detection by radial velocity (RV) measurements[1]. Based on this experience, our consortium is developing a high accuracy near-infrared RV spectrograph covering YJH bands to detect and characterize low-mass planets in the habitable zone of M dwarfs. It will allow RV measurements at the 1-m/s level and will look for habitable planets around M- type stars by following up the candidates found by the upcoming space missions TESS, CHEOPS and later PLATO. NIRPS and HARPS, working simultaneously on the ESO 3.6m are bound to become a single powerful high-resolution, high-fidelity spectrograph covering from 0.4 to 1.8 micron. NIRPS will complement HARPS in validating earth-like planets found around G and K-type stars whose signal is at the same order of magnitude than the stellar noise. Because at equal resolving power the overall dimensions of a spectrograph vary linearly with the input beam étendue, spectrograph designed for seeing-limited observations are large and expensive. NIRPS will use a high order adaptive optics system to couple the starlight into a fiber corresponding to 0.4” on the sky as efficiently or better than HARPS or ESPRESSO couple the light 0.9” fiber. This allows the spectrograph to be very compact, more thermally stable and less costly. Using a custom tan(θ)=4 dispersion grating in combination with a start-of-the-art Hawaii4RG detector makes NIRPS very efficient with complete coverage of the YJH bands at 110’000 resolution. NIRPS works in a regime that is in-between the usual multi-mode (MM) where 1000’s of modes propagates in the fiber and the single mode well suited for perfect optical systems. This regime called few-modes regime is prone to modal noise- Results from a significant R and D effort made to characterize and circumvent the modal noise show that this contribution to the performance budget shall not preclude the RV performance to be achieved.

Proceedings Article | 28 July 2014 Paper

Sky background subtraction with fiber-fed spectrographs

M. Puech, M. Rodrigues, Y. Yang, H. Flores, F. Royer, K. Disseau, T. Gonçalves, F. Hammer, M. Cirasuolo, C. Evans, G. Li Causi, R. Maiolino, C. Melo

Proceedings Volume 9147, 91476L (2014) https://doi.org/10.1117/12.2055137

KEYWORDS: Spectrographs, Switching, Light scattering, Signal to noise ratio, Absorption, Optical fibers, Error analysis, Observatories, Astronomy, Signal processing

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Proceedings Article | 9 July 2008 Paper

Detector upgrade for FLAMES: GIRAFFE gets red eyes

Claudio Melo, Mark Downing, Paul Jorden, Luca Pasquini, Sebastian Deiries, Andrew Kelt, Dominique Naef, Reinhard Hanuschik, Ralf Palsa, Roberto Castillo, Eduardo Peña, Eduardo Bendek, Mark Gieles

Proceedings Volume 7014, 70143B (2008) https://doi.org/10.1117/12.789092

KEYWORDS: Sensors, Quantum efficiency, Charge-coupled devices, Spectrographs, Calibration, Antireflective coatings, Spectral resolution, Stars, Databases, Optical fibers

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