Rafael Alves de Souza Ribeiro

@usp.br

Professor at Institute of Astronomy, Geophysics and Atmospheric Sciences
University of Sao Paulo

Rafael Alves de Souza Ribeiro


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https://researchid.co/rasribeiro

RESEARCH, TEACHING, or OTHER INTERESTS

Astronomy and Astrophysics, Engineering, Instrumentation
21

Scopus Publications

124

Scholar Citations

7

Scholar h-index

6

Scholar i10-index

Scopus Publications

  • Structural-thermal-optical performance (STOP) analysis of a theoretical Newtonian telescope using the Ansys-Zemax-STAR package
    Rodrigo Lima Pereira, Tiago Giorgetti, Thiago S. Amaral, Rafael Alves de Souza Ribeiro, Augusto Damineli Neto
    Proceedings of SPIE the International Society for Optical Engineering, 2025
  • Design, Assembly and Test of G-CLEF’s Exposure Meter I: Design Trade-off and First Conclusions
    Henrique Lupinari, Sagi Ben-Ami, Rafael Ribeiro, Claudia Mendes de Oliveira, Andrew Szentgyorgyi
    Proceedings of SPIE the International Society for Optical Engineering, 2024
  • Conceptual design of Roof-Pyramid WaveFront Sensor for GMACS on GMT
    Tiago Giorgetti, Oswaldo Horikawa, Rodrigo L. Stoetereau, Alexandre J.T. S. Mello, Rafael A. Ribeiro
    Proceedings of SPIE the International Society for Optical Engineering, 2024
  • Design, Assembly and Test of G-CLEF's Exposure Meter II: Optical Design and Prototype Test
    Henrique Lupinari, Rafael Ribeiro, Sagi Ben-Ami, Claudia Mendes de Oliveira, Andrew Szentgyorgyi
    Proceedings of SPIE the International Society for Optical Engineering, 2024
  • GMT adaptive optics test camera: Conceptual optical design
    Tiago Gualberto Bezerra de Souza, Antonin H. Bouchez, Rafael A. S. Ribeiro, Tárcio A. Vieira, Bijan Nemati, et al.
    Proceedings of SPIE the International Society for Optical Engineering, 2024
  • MANIFEST Filter Box: A conceptual opto-mechanical design
    Rodrigo L. Pereira, Tiago Giorggeti, Tiago Gualberto Bezerra de Souza, Thiago S. Amaral, Vitor Neves-Hartmann, et al.
    Proceedings of SPIE the International Society for Optical Engineering, 2024
  • Systems engineering applied to ELT instrumentation: MANIFEST pre-conceptual design case
    Vitor N. Hartmann, Priscila Pires, Daniel M. Faes, Rafael Ribeiro, Cláudia L. Oliveira, et al.
    Proceedings of SPIE the International Society for Optical Engineering, 2020
    Large or complex systems tend to be challenging when it comes to managing their project and construction while keeping the costs at an acceptable level. Systems Engineering aims not only to reduce that difficulty by systematically owing down the top-level user needs to the bottom level parts specification, but also by describing the full aspects of its lifecycle. Moreover, together with Systems Management, they aid the completion of intricated projects, such as professional telescopes. This paper shows how Systems Engineering and Systems Management are helping the construction of one important instrument for the Giant Magellan Telescope: MANIFEST, which is a robotic fiber-optic positioning system that improves the capabilities of other instruments in the telescope. It can increase and even split their field of view into two or more instruments. Its Operations Concept is briefly explained, and the flowdown from the Observatory Architecture and the Science Cases, with their corresponding Science Requirements, is presented. Interfaces with other equally important instruments are described, such as GMACS, a wide-field multi-object moderate-resolution optical spectrograph, and G-CLEF, a high-stability, high-resolution, echelle spectrograph operating in the visible range of the spectrum. Managerial aspects of the processes and documents involved are also explained, as well as the next steps for the incoming Conceptual Design phase.
  • Giant Magellan Telescope Multi-object Astronomical and Cosmological Spectrograph (GMACS): conceptual design
    Soojong Pak, Darren L. DePoy, Jennifer L. Marshall, Luke M. Schmidt, Casey Papovich, et al.
    Proceedings of SPIE the International Society for Optical Engineering, 2020
    The Giant Magellan Telescope Multi-object Astronomical and Cosmological Spectrograph (GMACS) is a first light instrument for the Giant Magellan Telescope (GMT). It will provide multi-object spectroscopy in wide wavelength coverage and wide field of view. The scientific objectives include exoplanet atmospheres, star formation and chemical evolution studies, galaxy assembly histories, and intergalactic medium tomography. The optical layouts are optimized to have high throughput in the natural seeing limit. In this presentation, we report the current status of the instrument development.
  • Camera articulation prototype of the Giant Magellan Telescope Multi-object Astronomical and Cosmological Spectrograph (GMACS)
    Tae-Geun Ji, Erika Cook, Soojong Pak, Evan Kelly, Leonardo Bush, et al.
    Proceedings of SPIE the International Society for Optical Engineering, 2020
    We describe the camera articulation prototype (CAP) for the Giant Magellan Telescope Multi-object Astronomical and Cosmological Spectrograph (GMACS), which is a wide field, multi-object, moderate-resolution, optical spectrograph of the Giant Magellan Telescope (GMT). The GMACS will have the Camera and Grating Articulation System (CGAS) which has two independent cameras and grating modules. The grating angles and the camera angles can be changed to adjust the dispersed light bands on the detector. The electronics components of this system include motors with encoder, pneumatic brakes, and limit switches. We demonstrate how to control the camera angles using a prototype that is designed for the camera articulation controller as a miniature model of the GMACS. The prototype was built with commercially-available extruded aluminum struts and 3D-printed parts and includes two motors with encoders. The prototype was produced quickly and inexpensively, but replicates all functions of the camera articulation mechanism in GMACS. We have developed the control package for the prototype that will be one of the GMACS Device Control System (DCS). The software is designed by the Agile development process and SysML, and developed using Visual C++ on Windows OS. This software has five major control functions: power, homing, resolution mode changing, limit detection, and emergency process. The limit detection is implemented by setting up the limit angle range in the software, because the limit switches are not included in the prototype. We present the demonstration result and discuss the details of the communication route about data flow between high-end user software and hardware components.
  • The MANIFEST pre-concept design
    Jonathan S. Lawrence, Sagi Ben-Ami, Antonio Braulio, Matthew M. Colless, Adam R. Contos, et al.
    Proceedings of SPIE the International Society for Optical Engineering, 2020
    MANIFEST is a multi-object fibre positioner for the Giant Magellan Telescope that uses ‘Starbug’ robots to accurately position fibre units across the telescope’s focal plane. MANIFEST, when coupled to the telescope’s planned seeing-limited instruments, GMACS and GCLEF, offers access to: larger fields of view; higher multiplex gains; versatile focal plane reformatting of the focal plane via multiple integral-field-units; increased spectral resolution using image-slicers; the capability for simultaneous observations with multiple instruments; the possibility of a gravity-invariant spectrograph mounting; the potential for OH suppression via fiber systems in the near-infrared; and the versatility of adding new instruments in the future. We have now completed the pre-concept phase for MANIFEST. This phase has focused on developing the science case and requirements, further developing high risk aspects of the instrument design, designing the opto-mechanical interfaces to the GMACS and GCLEF instruments, and detailing the interfaces to the GMT.
  • Electronics prototypes for the Giant Magellan telescope multi-object astronomical and cosmological spectrograph (GMACS)
    Erika Cook, Travis Prochaska, Hye-In Lee, Tae-Geun Ji, Soojong Pak, et al.
    Proceedings of SPIE the International Society for Optical Engineering, 2018
  • The optical design for the Giant Magellan Telescope Multi-object Astronomical and Cosmological Spectrograph (GMACS)
    Rafael A. S. Ribeiro, Damien Jones, Luke M. Schmidt, Keith Taylor, Aline Souza, et al.
    Proceedings of SPIE the International Society for Optical Engineering, 2018
  • Optical design for the Giant Magellan Telescope Multi-object Astronomical and Cosmological Spectrograph (GMACS): Design methodology, issues, and trade-offs
    Rafael A.S. Ribeiro, Damien Jones, Luke M. Schmidt, Keith Taylor, Erika Cook, et al.
    Proceedings of SPIE the International Society for Optical Engineering, 2018
  • GMACS: A wide-field, moderate-resolution spectrograph for the Giant Magellan Telescope
    Cynthia S. Froning, D. Bortoletto, Luke M. Schmidt, Darren L. DePoy, Erika Cook, et al.
    Proceedings of SPIE the International Society for Optical Engineering, 2018
  • Systems engineering applied to ELT instrumentation: The GMACS case
    Daniel Faes, Aline Souza, Cynthia Froning, Luke Schmidt, Erika Cook, et al.
    Proceedings of SPIE the International Society for Optical Engineering, 2018
  • The optomechanical design of the Giant Magellan telescope multi-object astronomical and cosmological spectrograph (GMACS)
    Travis Prochaska, Caron Albert, James Beck, Erika Cook, Darren L. DePoy, et al.
    Proceedings of SPIE the International Society for Optical Engineering, 2018
  • Optical design concept for the Giant Magellan Telescope Multi-object Astronomical and Cosmological Spectrograph (GMACS)
    Luke M. Schmidt, Rafael Ribeiro, Keith Taylor, Damien Jones, Travis Prochaska, et al.
    Proceedings of SPIE the International Society for Optical Engineering, 2016
  • Optomechanical design concept for the Giant Magellan Telescope Multi-object Astronomical and Cosmological Spectrograph (GMACS)
    Travis Prochaska, Marcus Sauseda, James Beck, Luke Schmidt, Erika Cook, et al.
    Proceedings of SPIE the International Society for Optical Engineering, 2016
  • High-sensitivity optical humidity sensor based on a thin dielectric waveguide
    R. A. S. Ribeiro, J. F. M. Domenegueti, S. C. Zilio
    Applied Optics, 2013
  • Remote spectroscopy in the visible using fibers on the optical internet network
    Rafael A. S. Ribeiro, Anderson R. de Oliveira, Sérgio C. Zilio
    IEEE Transactions on Education, 2010
  • High sensitivity differential refractometer by evanescent wave in a thin dielectric waveguide
    Rafael A. Ribeiro, Sérgio C. Zilio
    Optics Infobase Conference Papers, 2010

RECENT SCHOLAR PUBLICATIONS

  • GMACS: A Moderate-dispersion Optical Spectrograph for the Giant Magellan Telescope
    D Fabricant, D Catropa, R Fata, W Brown, P Doherty, D Durusky, J Kansky, ...
    Publications of the Astronomical Society of the Pacific 137 (3), 035002 , 2025
    2025
    Citations: 1
  • GMT adaptive optics test camera: conceptual optical design
    TGB de Souza, AH Bouchez, RAS Ribeiro, TA Vieira, B Nemati, R Demers
    Optical Modeling and Performance Predictions XIV 13129, 25-38 , 2024
    2024
  • MANIFEST filter box: a conceptual optical and opto-mechanical design
    RL Pereira, T Giorgetti, TGB Souza, TS Amaral, V Neves-Hartmann, ...
    Optical Modeling and Performance Predictions XIV 13129, 218-236 , 2024
    2024
  • Conceptual design of roof-pyramid wavefront sensor for GMACS on GMT
    T Giorgetti, O Horikawa, RL Stoetereau, ATS Mello, RAS Ribeiro
    Adaptive Optics Systems IX 13097, 929-945 , 2024
    2024
  • Design, assembly, and test of G-CLEF's exposure meter II: optical design and prototype test
    H Lupinari, RAS Ribeiro, S Ben-Ami, CM de Oliveira, A Szentgyorgyi
    Ground-based and Airborne Instrumentation for Astronomy X 13096, 1412-1426 , 2024
    2024
    Citations: 2
  • Science instruments for the Giant Magellan Telescope
    R Millan-Gabet, G Rahmer, RA Bernstein, A Souza, W Schoenell, ...
    Ground-based and Airborne Instrumentation for Astronomy X 13096, 238-248 , 2024
    2024
    Citations: 2
  • Design, assembly, and test of G-CLEF's exposure meter I: design trade-off and first conclusions
    H Lupinari, S Ben-Ami, R Ribeiro, CM de Oliveira, A Szentgyorgyi
    Optical Instrument Science, Technology, and Applications III 13024, 101-113 , 2024
    2024
    Citations: 2
  • MANIFEST Filter Box: A conceptual opto-mechanical design
    RL Pereira, T Giorgetti, TGB Souza, TS Amarella, V Neves-Hartmann, ...
    OPTICAL MODELING AND PERFORMANCE PREDICTIONS XIV 13129, 19 , 2024
    2024
  • Science instrumentation progress at the Giant Magellan Telescope
    R Millan-Gabet, RA Bernstein, A Souza, B Walls, A Bouchez, B Sitarski, ...
    Ground-based and Airborne Instrumentation for Astronomy IX 12184, 671-678 , 2022
    2022
    Citations: 9
  • Camera articulation prototype of the Giant Magellan Telescope Multi-object Astronomical and Cosmological Spectrograph (GMACS)
    TG Ji, E Cook, S Pak, E Kelly, L Bush, L Barba, J Mason, HI Lee, ...
    Software and Cyberinfrastructure for Astronomy VI 11452, 1145224 , 2020
    2020
    Citations: 1
  • The MANIFEST pre-concept design
    J Lawrence, S Ben-Ami, A Braulio, M Colless, A Contos, D DePoy, D Faes, ...
    Ground-based and Airborne Instrumentation for Astronomy VIII 11447, 1144728 , 2020
    2020
    Citations: 14
  • Systems engineering applied to ELT instrumentation: MANIFEST pre-conceptual design case
    VN Hartmann, P Pires, DM Faes, R Ribeiro, CM Oliveira, C Lacombe, ...
    Modeling, Systems Engineering, and Project Management for Astronomy IX 11450 … , 2020
    2020
    Citations: 2
  • Giant Magellan Telescope Multi-object Astronomical and Cosmological Spectrograph (GMACS): conceptual design
    S Pak, DL DePoy, JL Marshall, LM Schmidt, C Papovich, C Froning, ...
    Advances in Optical Astronomical Instrumentation 2019 11203, 1120308 , 2020
    2020
  • Electronics prototypes for the Giant Magellan telescope multi-object astronomical and cosmological spectrograph (GMACS)
    E Cook, T Prochaska, HI Lee, TG Ji, S Pak, DL DePoy, JL Marshall, ...
    Ground-based and Airborne Instrumentation for Astronomy VII 10702, 107029Z , 2018
    2018
    Citations: 2
  • The optical design for the Giant Magellan Telescope Multi-object Astronomical and Cosmological Spectrograph (GMACS)
    RAS Ribeiro, LM Schmidt, D Jones, K Taylor, T Prochaska, E Cook, ...
    Ground-based and Airborne Instrumentation for Astronomy VII 10702, 107029B , 2018
    2018
    Citations: 5
  • Systems engineering applied to ELT instrumentation: the GMACS case
    DM Faes, A Souza, C Froning, L Schmidt, D Bortoletto, E Cook, DL DePoy, ...
    Modeling, Systems Engineering, and Project Management for Astronomy VIII … , 2018
    2018
    Citations: 2
  • The optomechanical design of the Giant Magellan telescope multi-object astronomical and cosmological spectrograph (GMACS)
    T Prochaska, C Albert, J Beck, E Cook, DL DePoy, DM Faes, C Froning, ...
    Ground-based and Airborne Instrumentation for Astronomy VII 10702, 107029Y , 2018
    2018
    Citations: 2
  • GMACS: a wide-field, moderate-resolution spectrograph for the Giant Magellan Telescope
    DL DePoy, LM Schmidt, R Ribeiro, K Taylor, D Jones, T Prochaska, ...
    Ground-based and airborne instrumentation for astronomy vii 10702, 615-618 , 2018
    2018
    Citations: 19
  • Optical design for the Giant Magellan Telescope Multi-object Astronomical and Cosmological Spectrograph (GMACS): design methodology, issues, and trade-offs
    RAS Ribeiro, D Jones, LM Schmidt, K Taylor, E Cook, DL DePoy, D Faes, ...
    Optical Design and Engineering VII 10690, 106902S , 2018
    2018
    Citations: 4
  • Optomechanical design concept for the Giant Magellan Telescope Multi-object Astronomical and Cosmological Spectrograph (GMACS)
    T Prochaska, M Sauseda, J Beck, L Schmidt, E Cook, DL DePoy, ...
    Ground-based and Airborne Instrumentation for Astronomy VI 9908, 9908A3 , 2016
    2016
    Citations: 12

MOST CITED SCHOLAR PUBLICATIONS

  • GMACS: a wide-field, moderate-resolution spectrograph for the Giant Magellan Telescope
    DL DePoy, LM Schmidt, R Ribeiro, K Taylor, D Jones, T Prochaska, ...
    Ground-based and airborne instrumentation for astronomy vii 10702, 615-618 , 2018
    2018
    Citations: 19
  • Optical design concept for the Giant Magellan Telescope Multi-object Astronomical and Cosmological Spectrograph (GMACS)
    LM Schmidt, R Ribeiro, K Taylor, D Jones, T Prochaska, DL DePoy, ...
    Ground-based and Airborne Instrumentation for Astronomy VI 9908, 9908A4 , 2016
    2016
    Citations: 16
  • A new method using laser induced fluorescence quenching for studying metal complexes in the solid state applied to CrIII, CuII and PbII in sandy soils
    P Merdy, LT Gharbi, DMP Milori, RAS Ribeiro, Y Lucas
    Geoderma 150 (1-2), 179-187 , 2009
    2009
    Citations: 15
  • The MANIFEST pre-concept design
    J Lawrence, S Ben-Ami, A Braulio, M Colless, A Contos, D DePoy, D Faes, ...
    Ground-based and Airborne Instrumentation for Astronomy VIII 11447, 1144728 , 2020
    2020
    Citations: 14
  • High-sensitivity optical humidity sensor based on a thin dielectric waveguide
    RAS Ribeiro, JFM Domenegueti, SC Zilio
    Applied optics 52 (18), 4287-4293 , 2013
    2013
    Citations: 13
  • Optomechanical design concept for the Giant Magellan Telescope Multi-object Astronomical and Cosmological Spectrograph (GMACS)
    T Prochaska, M Sauseda, J Beck, L Schmidt, E Cook, DL DePoy, ...
    Ground-based and Airborne Instrumentation for Astronomy VI 9908, 9908A3 , 2016
    2016
    Citations: 12
  • Science instrumentation progress at the Giant Magellan Telescope
    R Millan-Gabet, RA Bernstein, A Souza, B Walls, A Bouchez, B Sitarski, ...
    Ground-based and Airborne Instrumentation for Astronomy IX 12184, 671-678 , 2022
    2022
    Citations: 9
  • The optical design for the Giant Magellan Telescope Multi-object Astronomical and Cosmological Spectrograph (GMACS)
    RAS Ribeiro, LM Schmidt, D Jones, K Taylor, T Prochaska, E Cook, ...
    Ground-based and Airborne Instrumentation for Astronomy VII 10702, 107029B , 2018
    2018
    Citations: 5
  • Optical design for the Giant Magellan Telescope Multi-object Astronomical and Cosmological Spectrograph (GMACS): design methodology, issues, and trade-offs
    RAS Ribeiro, D Jones, LM Schmidt, K Taylor, E Cook, DL DePoy, D Faes, ...
    Optical Design and Engineering VII 10690, 106902S , 2018
    2018
    Citations: 4
  • Design, assembly, and test of G-CLEF's exposure meter II: optical design and prototype test
    H Lupinari, RAS Ribeiro, S Ben-Ami, CM de Oliveira, A Szentgyorgyi
    Ground-based and Airborne Instrumentation for Astronomy X 13096, 1412-1426 , 2024
    2024
    Citations: 2
  • Science instruments for the Giant Magellan Telescope
    R Millan-Gabet, G Rahmer, RA Bernstein, A Souza, W Schoenell, ...
    Ground-based and Airborne Instrumentation for Astronomy X 13096, 238-248 , 2024
    2024
    Citations: 2
  • Design, assembly, and test of G-CLEF's exposure meter I: design trade-off and first conclusions
    H Lupinari, S Ben-Ami, R Ribeiro, CM de Oliveira, A Szentgyorgyi
    Optical Instrument Science, Technology, and Applications III 13024, 101-113 , 2024
    2024
    Citations: 2
  • Systems engineering applied to ELT instrumentation: MANIFEST pre-conceptual design case
    VN Hartmann, P Pires, DM Faes, R Ribeiro, CM Oliveira, C Lacombe, ...
    Modeling, Systems Engineering, and Project Management for Astronomy IX 11450 … , 2020
    2020
    Citations: 2
  • Electronics prototypes for the Giant Magellan telescope multi-object astronomical and cosmological spectrograph (GMACS)
    E Cook, T Prochaska, HI Lee, TG Ji, S Pak, DL DePoy, JL Marshall, ...
    Ground-based and Airborne Instrumentation for Astronomy VII 10702, 107029Z , 2018
    2018
    Citations: 2
  • Systems engineering applied to ELT instrumentation: the GMACS case
    DM Faes, A Souza, C Froning, L Schmidt, D Bortoletto, E Cook, DL DePoy, ...
    Modeling, Systems Engineering, and Project Management for Astronomy VIII … , 2018
    2018
    Citations: 2
  • The optomechanical design of the Giant Magellan telescope multi-object astronomical and cosmological spectrograph (GMACS)
    T Prochaska, C Albert, J Beck, E Cook, DL DePoy, DM Faes, C Froning, ...
    Ground-based and Airborne Instrumentation for Astronomy VII 10702, 107029Y , 2018
    2018
    Citations: 2
  • GMACS: A Moderate-dispersion Optical Spectrograph for the Giant Magellan Telescope
    D Fabricant, D Catropa, R Fata, W Brown, P Doherty, D Durusky, J Kansky, ...
    Publications of the Astronomical Society of the Pacific 137 (3), 035002 , 2025
    2025
    Citations: 1
  • Camera articulation prototype of the Giant Magellan Telescope Multi-object Astronomical and Cosmological Spectrograph (GMACS)
    TG Ji, E Cook, S Pak, E Kelly, L Bush, L Barba, J Mason, HI Lee, ...
    Software and Cyberinfrastructure for Astronomy VI 11452, 1145224 , 2020
    2020
    Citations: 1
  • Refratômetro por ondas evanescentes em guias de ondas planares
    RAS Ribeiro
    Universidade de São Paulo , 2010
    2010
    Citations: 1
  • GMT adaptive optics test camera: conceptual optical design
    TGB de Souza, AH Bouchez, RAS Ribeiro, TA Vieira, B Nemati, R Demers
    Optical Modeling and Performance Predictions XIV 13129, 25-38 , 2024
    2024