Dr. Pablo Zuluaga-Ramírez Profile

Dr. Pablo Zuluaga-Ramírez

at ESO

SPIE Involvement:

Author

Publications (15)

Proceedings Article | 29 August 2022 Presentation + Paper

The design and development of the M2, M3 and M5 cells for the European Extremely Large Telescope

A. Tomàs, J. A. Andion, M. Canchado, J. M. Casalta, O. Casamor, O. Ramos, M. Redondo, F. Grañena, G. Olivella, M. Mueller, Y. Lammen, J. F. Pirard, P. Zuluaga

Proceedings Volume 12188, 121880K (2022) https://doi.org/10.1117/12.2629427

KEYWORDS: Mirrors, Actuators, Telescopes, Sensors, Interfaces, Manufacturing, Optical alignment

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Proceedings Article | 25 August 2022 Presentation + Paper

ESO ELT: vibration performance and budget verification: measured equipment data as input to telescope model

B. Sedghi, P. Zuluaga Ramirez, D. Pilbauer, S. Leveratto, U. Lampater, M. Müller, G. Jakob, M. Haug, M. Accardo, Y. Lammen, J. Abad-Pastor, J. C. González-Herrera

Proceedings Volume 12187, 1218714 (2022) https://doi.org/10.1117/12.2628907

KEYWORDS: Telescopes, Mirrors, Wavefronts, Actuators, Control systems, Adaptive optics, Vibrational characterization, Modeling and simulation, Vibration isolation, Active vibration damping

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Proceedings Article | 13 December 2020 Poster

ELT M4 adaptive unit ready for integration

Roberto Biasi, Mario Andrighettoni, Gerald Angerer, Andrea Atzeni, Maurizio Groppi, Mauro Manetti, Dietrich Pescoller, Daniele Gallieni, Enzo Anaclerio, Lorenzo Crimella, Pierluigi Fumi, Matteo Tintori, Elise Vernet, Marc Cayrel, Aglae Kellerer, Paul Lilley, Pablo Zuluaga-Ramírez, Pavel Kravez, Runa Briguglio, Marco Xompero, Giorgio Pariani, Armando Riccardi, Chiara Selmi, Nicolò Azzaroli

Proceedings Volume 11445, 114453T (2020) https://doi.org/10.1117/12.2562913

KEYWORDS: Manufacturing, Telescopes, Optical instrument design, Large telescopes, Advanced distributed simulations, Mirrors, Sensors, Design for manufacturability, Optical testing

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Proceedings Article | 13 December 2020 Poster + Presentation + Paper

ESO-ELT: structural coupling effects between main structure and hosted units

Pablo Zuluaga-Ramírez, Franz Koch, Michael Müller, Babak Sedghi, Michael Esselborn

Proceedings Volume 11450, 114501R (2020) https://doi.org/10.1117/12.2564569

KEYWORDS: Mirrors, Telescopes, Active optics, Control systems, Observatories, Mid-IR, Optical telescopes, Active remote sensing, Optical sensing, Modeling

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Proceedings Article | 13 December 2020 Presentation + Paper

ESO ELT M5 unit: design and manufacturing status

Elise Vernet, Jean-François Pirard, Constanza Araujo Hauck, Pablo Zuluaga Ramirez, Marc Cayrel, Claire Lamour, Jean Louis Carel, Jean Marc Merceron, Solène Doublet, Clément Charuel, David Hartmann, Dominique Bardon, Florent Mallet, Michel Bougoin, Miguel Redondo, Joan Manel Casalta, Ferran Grañena, Jocelyn Refuba, Alexandre Pages, Frank Claeyssen

Proceedings Volume 11445, 114453O (2020) https://doi.org/10.1117/12.2561016

KEYWORDS: Mirrors, Telescopes, Manufacturing

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Proceedings Article | 13 December 2020 Presentation + Paper

Results of the ELT M1 position actuators validation campaign

Lorenzo Pettazzi, Babak Sedghi, Andreas Reinacher, Martin Dimmler, Pablo Barriga, Pablo Zuluaga Ramirez, Marc Cayrel, Oliver Dietzel, Michael Ebert, Timo Maier, Andreas Zürcher, Liang Rong, Christoph Stiebel, Pascal Bankovic

Proceedings Volume 11451, 114511W (2020) https://doi.org/10.1117/12.2562594

KEYWORDS: Actuators, Photoacoustic tomography, Mirrors, Spindles, Structural design, Design for manufacturability, Manufacturing, Objectives, Performance modeling

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Proceedings Article | 13 December 2020 Presentation + Paper

ESO ELT - vibration sources characterization: a step forward towards requirement and performance verification

B. Sedghi, P. Zuluaga-Ramírez, U. Lampater, D. Pilbauer, S. Leveratto, G. Jakob, M. Müller, J. Abad-Pastor, J. C. González-Herrera, S. Patti

Proceedings Volume 11450, 114500N (2020) https://doi.org/10.1117/12.2561548

KEYWORDS: Telescopes, Cooling systems, Wavefronts, Systems modeling, Observatories, Performance modeling

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Proceedings Article | 9 July 2018 Paper

Extremely Large Telescope Prefocal Station A system concept

S. A. Lewis, E. Brunetto, A. Förster, C. Frank, I. Guidolin, S. Guisard, P. Hammersley, R. Holzlöhner, P. Jolley, J. Kosmalski, U. Lampater, E. Marchetti, P. La Penna, T. Pfrommer, P. Zuluaga

Proceedings Volume 10700, 107001B (2018) https://doi.org/10.1117/12.2313535

KEYWORDS: Telescopes, Sensors, Mirrors, Metrology, Wavefront sensors, Error analysis, Cameras, Interfaces, Imaging systems, Wavefronts

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Proceedings Article | 17 November 2017 Open Access

Spica-Safari reference optical design

Carmen Pastor, Pablo Zuluaga, Willem Jellema, Luis Miguel González Fernández, Tomas Belenguer, Josefina Torres Redondo, Peter Paul Kooijman, Francisco Najarro, Martin Eggens, Peter Roelfsema, Takao Nakagawa

Proceedings Volume 10563, 105634K (2017) https://doi.org/10.1117/12.2304183

KEYWORDS: Mirrors, Fourier transforms, Optical design, Interferometers, Space telescopes, Telescopes, Diffraction, Cameras, Image transmission, Interfaces

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Proceedings Article | 17 November 2017 Open Access

Solar orbiter/PHI full disk telescope entrance window mechanical mount

J. Barandiaran, P. Zuluaga, A. Fernandez, I. Vera, D. Garranzo, A. Nuñez, L. Bastide, M. Royo, A. Alvarez

Proceedings Volume 10563, 1056319 (2017) https://doi.org/10.1117/12.2304261

KEYWORDS: Glasses, Space telescopes, Telescopes, Astronomical imaging, Titanium, Molybdenum, Scanning tunneling microscopy, Chemical elements, Safety, Space operations

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PHI is a diffraction limited, wavelength tunable, quasi-monochromatic, and polarization sensitive imager. These capabilities are needed to infer the magnetic field and line-of-sight (LOS) velocity of the region targeted by the spacecraft (spacecraft (S/C)).

PHI will consist of two telescopes: The High Resolution Telescope (HRT)[1] and the Full Disk Telescope (FDT). The HRT and the FDT will view the Sun through entrance windows located in the S/C heat shield. These windows act as heat rejecting filters with a transmission band of about 30 nm width centered on the science wavelength, such that the total transmittance (integral over the filter curve weighted with solar spectrum, including white leakage plus transmission profile of the pass band) does not exceed 4% of the total energy falling onto the window [2][3].

The HREW filter has been designed by SELEX in the framework of an ESA led technology development activity under original ESTEC contract No. 20018/06/NL/CP[4], and extensions thereof. For FDT HREW SLEX will provide the windows and it coatings.

The HREW consists of two parallel-plane substrate plates (window 1 & window 2)[5] made of SUPRASIL 300 with a central thickness of 9 mm and a wedge of 30 arcsec each. These two substrates are each coated on both sides with four different coatings. These coatings and the choice of SUPRASIL help to minimize the optical absorptivity in the substrate and to radiatively decouple the HREW, which is expected to run at high temperatures during perihelion passages, from the PHI instrument cavity.

The temperature distribution of the HREW is driven by two main factors: the mechanical mounting of the substrates to the feedthrough, and the radiative environment within the heat-shield/feedthrough assembly.

The mechanical mount must ensure the correct integration of both suprasil substrates in its correct position and minimize the loads in windows due to thermal induced deformations and launching vibration environment.

All the subsystem must survive to a launching vibration environment and fulfill optical requirements in an environmental conditions according o its position in the external part of the spacecraft with a pressure of 0.0013Pa and a temperature -163°C<T<230°C.

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Proceedings Article | 17 November 2017 Open Access

Optical performance of the SO/PHI full disk telescope due to temperature gradients effect on the heat rejection entrance window

D. Garranzo, A. Núñez, P. Zuluaga-Ramírez, J. Barandiarán, A. Fernández-Medina, T. Belenguer, A. Álvarez-Herrero

Proceedings Volume 10563, 105634T (2017) https://doi.org/10.1117/12.2304067

KEYWORDS: Space telescopes, Telescopes, Coating, Astronomical imaging, Wavefronts, Refractive index, Image quality, Optical filters, Thermal effects, Finite element methods

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The Polarimetric Helioseismic Imager for Solar Orbiter (SO/PHI) is an instrument on board in the Solar Orbiter mission. The Full Disk Telescope (FDT) will have the capability of providing images of the solar disk in all orbital faces with an image quality diffraction-limited. The Heat Rejection Entrance Window (HREW) is the first optical element of the instrument. Its function is to protect the instrument by filtering most of the Solar Spectrum radiation. The HREW consists of two parallel-plane plates made from Suprasil and each surface has a coating with a different function: an UV shield coating, a low pass band filter coating, a high pass band filter coating and an IR shield coating, respectively.

The temperature gradient on the HREW during the mission produces a distortion of the transmitted wave-front due to the dependence of the refractive index with the temperature (thermo-optic effect) mainly. The purpose of this work is to determine the capability of the PHI/FDT refocusing system to compensate this distortion.

A thermal gradient profile has been considered for each surface of the plates and a thermal-elastic analysis has been done by Finite Element Analysis to determine the deformation of the optical elements. The Optical Path Difference (OPD) between the incident and transmitted wavefronts has been calculated as a function of the ray tracing and the thermo-optic effect on the optical properties of Suprasil (at the work wavelength of PHI) by means of mathematical algorithms based on the 3D Snell Law. The resultant wavefronts have been introduced in the optical design of the FDT to evaluate the performance degradation of the image at the scientific focal plane and to estimate the capability of the PHI refocusing system for maintaining the image quality diffraction-limited. The analysis has been carried out considering two different situations: thermal gradients due to on axis attitude of the instrument and thermal gradients due to 1° off pointing attitude. The effect over the boresight at the instrument focal plane has also been analyzed.

The results show that the effect of the FDT HREW thermal gradients on the FDT performance can be optically corrected. The influence of the thermal gradients on the system is also presented.

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Proceedings Article | 29 July 2016 Paper

SAFARI optical system architecture and design concept

Carmen Pastor, Willem Jellema, Pablo Zuluaga-Ramírez, David Arrazola, M. Fernández-Rodriguez, Tomás Belenguer, Luis González Fernández, Michael Audley, Jaap Evers, Martin Eggens, Josefina Torres Redondo, Francisco Najarro, Peter Roelfsema

Proceedings Volume 9904, 99043U (2016) https://doi.org/10.1117/12.2232786

KEYWORDS: Spectral resolution, Space telescopes, Telescopes, Optical design, Space telescopes, Mirrors, Diffraction gratings, Interferometers, Sensors, Lawrencium, Polarization

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Proceedings Article | 28 August 2014 Paper

The optical design of a far infrared imaging FTS for SPICA

Proceedings Volume 9143, 91434B (2014) https://doi.org/10.1117/12.2056791

KEYWORDS: Mirrors, Fourier transforms, Interferometers, Optical design, Telescopes, Cameras, Space telescopes, Diffraction, Far infrared, Image transmission

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Proceedings Article | 17 July 2008 Paper

Wind Evaluation Breadboard: mechanical design and analysis, control architecture, dynamic model, and performance simulation

Marcos Reyes García-Talavera, Teodora Viera, Miguel Núñez, Pablo Zuluaga, Bernardo Ronquillo, Mariano Ronquillo, Enzo Brunetto, Marco Quattri, Javier Castro, Elvio Hernández

Proceedings Volume 7012, 70120X (2008) https://doi.org/10.1117/12.789562

KEYWORDS: Actuators, Photoacoustic tomography, Sensors, Device simulation, Linear filtering, Computing systems, Control systems, Mechanical engineering, Signal attenuation, Telescopes

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Proceedings Article | 14 July 2008 Paper

Wind Evaluation Breadboard electronics and software

Miguel Núñez, Marcos Reyes, Teodora Viera, Pablo Zuluaga

Proceedings Volume 7019, 70190K (2008) https://doi.org/10.1117/12.788891

KEYWORDS: Photoacoustic tomography, Electronics, Computing systems, Control systems, Actuators, Mirrors, Human-machine interfaces, Sensors, LabVIEW, Software development

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Showing 5 of 15 publications

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