Dr. Carlos Espejo Profile

Dr. Carlos Espejo

Physicist at Univ Nacional Autónoma de México

SPIE Involvement:

Author

Publications (24)

Proceedings Article | 25 July 2024 Paper

The electronics and control of mechanisms and house-keeping for the FRIDA instrument: current status and achievements

Rubén Flores-Meza, José Garcés, Gerardo Lara, Carolina Keiman, Carlos Espejo, Beatriz Sánchez

Proceedings Volume 13101, 131013D (2024) https://doi.org/10.1117/12.3019039

KEYWORDS: Cryostats, 3D modeling, Control systems, Sensors, Cryogenics, Calibration, Equipment, Vacuum, Lamps, Design

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Proceedings Article | 18 July 2024 Presentation + Paper

FRIDA: diffraction-limited imaging and integral-field spectroscopy for the GTC

Alan Watson, José Acosta-Pulido, Marta Aguiar, Luis Álvarez-Núñez, Víctor J. Béjar, Nicolás Cardiel, Oscar Chapa, Salvador Cuevas, José Javier Díaz García, Stephen Eikenberry, Carlos Espejo, Rubén Flores-Meza, Jorge Fuentes-Fernández, José Fujarte, Jesús Gallego, José Leonardo Garcés Medina, Francisco Garzón López, Peter Hammersley, Enrique Jovén Álvarez, Carolina Keiman, Gerardo Lara, José Alberto López, Enol Matilla Blanco, Carlos Ortega, Sergio Pascual Ramírez, Jesús Patrón Recio, Almudena Prieto, Berenice Rodríguez, Beatriz Sánchez, Eleazar Sánchez

Proceedings Volume 13096, 130961Y (2024) https://doi.org/10.1117/12.3019191

KEYWORDS: Imaging spectroscopy, Sensors, Cameras, Equipment, Spectroscopy, Cryogenics, Tunable filters, Spectrographs, Cryostats, Optical filters

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Proceedings Article | 29 August 2022 Paper

FRIDA: diffraction-limited imaging and integral-field spectroscopy for the GTC

Alan Watson, José Acosta-Pulido, Marta Aguiar, Luis Álvarez-Núñez, Victor J. Sánchez-Béjar, Nicolás Cardiel, Oscar Chapa, Salvador Cuevas, José Javier Díaz García, Stephen S. Eikenberry, Carlos Espejo, Rubén A. Flores-Meza, Jorge Fuentes-Fernández, José Fujarte, Jesús Gallego, José Leonardo Garcés Medina, Francisco Garzón López, Peter Hammersley, Enrique Jovén Álvarez, Carolina Keiman, Gerardo Lara, José Alberto López, Carlos A. Ortega, Sergio Pascual Ramírez, Jesús Patrón Recio, Almudena Prieto, Berenice Rodríguez, Beatriz Sánchez, José Sánchez

Proceedings Volume 12184, 121840C (2022) https://doi.org/10.1117/12.2630345

KEYWORDS: Imaging spectroscopy, Sensors, Cameras, Spectroscopy, Spectrographs, Optics manufacturing, Control systems, Adaptive optics

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Proceedings Article | 29 August 2022 Poster + Paper

AIV of FRIDA optics: from optical manufacturing to system cryogenic qualification

Salvador Cuevas, Oscar Chapa, Luis Álvarez-Núñez, Beatriz Sánchez, Carolina Keiman, Carlos Espejo, Rubén Flores-Meza, Jorge Fuentes-Fernández, J. Refugio Fujarte, J. Leonardo Garcés, Gerardo Lara, Berenice Rodríguez, J. Eleazar Sánchez, Alan Watson

Proceedings Volume 12184, 121844C (2022) https://doi.org/10.1117/12.2630825

KEYWORDS: Optics manufacturing, Cryogenics, Imaging systems, Spectrographs, Optical testing, Astronomical adaptive optics, Infrared spectroscopy, Astronomical instrumentation engineering

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SPIE Journal Paper | 24 March 2017 Open Access

Cryogenic application of an autocentering mount working at the diffraction limit

Beatriz Sánchez, Ana Carolina Keiman, Jorge Fuentes-Fernández, Salvador Cuevas Cardona, Carlos Espejo, Oscar Chapa, Rubén Flores-Meza, Luis Carlos Álvarez-Núñez, Gerardo Lara, José Leonardo Garcés Medina

OE, Vol. 56, Issue 03, 034114, (March 2017) https://doi.org/10.1117/12.10.1117/1.OE.56.3.034114

KEYWORDS: Cryogenics, Collimators, Diffraction, Reticles, Lens design, Image quality, Telescopes, Tolerancing, Digital cameras, Optical engineering

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Proceedings Article | 9 August 2016 Paper

FRIDA: diffraction-limited imaging and integral-field spectroscopy for the GTC

Alan Watson, José Acosta-Pulido, Luis Álvarez-Núñez, Vicente Bringas-Rico, Nicolás Cardiel, Salvador Cardona, Oscar Chapa, José Javier Díaz García, Stephen Eikenberry, Carlos Espejo, Rubén Flores-Meza, Jorge Fuentes-Fernández, Jesús Gallego , José Leonardo Garcés Medina, Francisco Garzón López, Peter Hammersley, Carolina Keiman, Gerardo Lara, José Alberto López, Pablo López, Diana Lucero, Heidy Moreno Arce, Sergio Pascual Ramirez, Jesús Patrón Recio, Almudena Prieto, Alberto José Rodríguez, José Marco de la Rosa, Beatriz Sánchez, Jorge Uribe, Francisco Váldez Berriozabal

Proceedings Volume 9908, 99080P (2016) https://doi.org/10.1117/12.2233069

KEYWORDS: Imaging spectroscopy, Spectroscopy, System integration, Adaptive optics, Sensors, Cameras, Spectrographs, Mirrors, Optical filters, Control systems

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Proceedings Article | 8 August 2016 Paper

FRIDA´s mechanisms control system structure and tests

R. Flores-Meza, G. Lara, B. Sánchez, C. Espejo, C. Keiman, J. Garcés, S. Cuevas, J. J. Díaz

Proceedings Volume 9913, 99134K (2016) https://doi.org/10.1117/12.2233897

KEYWORDS: Control systems, Control systems, Cryogenics, Computer programming, Prototyping, Interfaces, Calibration, Current controlled current source, Electronics, Human-machine interfaces

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Proceedings Article | 4 August 2014 Paper

FRIDA diffraction limited NIR instrument: the challenges of its verification processes

Be. Sánchez, C. Keiman, C. Espejo, S. Cuevas, L. Álvarez, O. Chapa, R. Flores-Meza, J. Fuentes, L. Garcés, G. Lara, J. A. López, R. Rodríguez, A. Watson, V. Bringas, A. Corrales, D. Lucero, A. Rodríguez, B. Rodríguez, D. Torres, J. Uribe

Proceedings Volume 9150, 91501R (2014) https://doi.org/10.1117/12.2057439

KEYWORDS: Cameras, Collimators, Mirrors, Current controlled current source, Diffraction, Near infrared, Iterated function systems, Cryogenics, Spectrographs, Prototyping

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Proceedings Article | 25 July 2014 Paper

Advances in the development of FRIDA's mechanisms control system and house-keeping

R. Flores-Meza, J. Garcés, G. Lara, B. Sánchez, C. Espejo, C. Keiman, S. Cuevas, J. Díaz

Proceedings Volume 9152, 91522C (2014) https://doi.org/10.1117/12.2057336

KEYWORDS: Control systems, Cryogenics, Electronics, Photonic integrated circuits, Prototyping, Control systems design, Sensors, Electronic components, 3D modeling, Connectors

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Proceedings Article | 8 July 2014 Paper

FRIDA, the diffraction limited NIR imager and IFS for the Gran Telescopio Canarias: status report

J. López, J. Acosta, L. Alvarez, V. Bringas, N. Cardiel, D. Clark, A. Corrales, S. Cuevas, O. Chapa, J. J. Díaz Garcia, S. Eikenberry, C. Eliche, C. Espejo, R. Flores, J. Fuentes, J. Gallego, J. Garcés, F. Garzón, P. Hammersley, C. Keiman, G. Lara, P. López, D. Lucero, H. Moreno, S. Pascual, J. Patrón, A. Prieto, A. Rodríguez, B. Rodríguez, B. Sánchez, D. Torres, J. Uribe, A. Watson

Proceedings Volume 9147, 91471P (2014) https://doi.org/10.1117/12.2057236

KEYWORDS: Cameras, Spectrographs, Iterated function systems, Sensors, Optics manufacturing, Imaging systems, Mirrors, Optical components, System integration, Adaptive optics

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Proceedings Article | 24 September 2012 Paper

Electronics and mechanisms control system for FRIDA (inFRared Imager and Dissector for Adaptive optics)

R. Flores-Meza, S. Cuevas, J. Díaz, C. Espejo, C. Keiman, G. Lara, B. Sánchez, J. Uribe

Proceedings Volume 8451, 84513H (2012) https://doi.org/10.1117/12.926729

KEYWORDS: Control systems, Electronics, Control systems design, Sensors, Prototyping, Temperature sensors, Photonic integrated circuits, Human-machine interfaces, Optical benches, Infrared radiation

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Proceedings Article | 24 September 2012 Paper

OSIRIS tunable imager and spectrograph for the GTC: from design to commissioning

Beatriz Sánchez, Marta Aguiar-González, Roberto Barreto, Santiago Becerril, Joss Bland-Hawthorn, Angel Bongiovanni, Jordi Cepa, Santiago Correa, Oscar Chapa, Alessandro Ederoclite, Carlos Espejo, Alejandro Farah, Ana Belén Fragoso, Patricia Fernández, Rubén Flores, F. Javier Fuentes, Fernando Gago, Fernando Garfias, José Vicente Gigante, Jesús González, Victor González-Escalera, Belén Hernández, Elvio Hernandez, Alberto Herrera, Guillermo Herrera, Enrique Joven, Rosalia Langarica, Gerardo Lara, José Carlos López, Roberto López, Carmelo Militellon, Heidy Moreno, Lorenzo Peraza, Angeles Pérez, Jaime Pérez, José Luis Rasilla, Josefina Rosich, Carlos Tejada, Silvio Tinoco, Txinto Vaz, Alejandro Villegas

Proceedings Volume 8446, 84464T (2012) https://doi.org/10.1117/12.926676

KEYWORDS: Cameras, Tunable filters, Charge-coupled devices, Imaging spectroscopy, Sensors, Telescopes, Spectroscopes, Imaging systems, Optical filters, Mechanical engineering

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Proceedings Article | 24 September 2012 Paper

Current status of FRIDA: diffraction limited NIR instrument for the GTC

Beatriz Sánchez, José Acosta, Luis Álvarez, Vicente Bringas, Nicolás Cardiel, Adi Corrales, Salvador Cuevas, Oscar Chapa, José Javier Díaz, Stephen Eikenberry, Carmen Eliche, Carlos Espejo, Rubén Flores, Francisco Garzón, Peter Hammersley, Carolina Keiman, Gerardo Lara, José López, Pablo López, Diana Lucero, Jose Manuel Montoya, Heidy Moreno, Sergio Pascual, Jesús Patrón, Almudena Prieto, N. Raines, Alberto Rodríguez, Jorge Uribe, Alan Watson

Proceedings Volume 8446, 844624 (2012) https://doi.org/10.1117/12.926499

KEYWORDS: Cameras, Diffraction, Sensors, Spectrographs, Optical benches, Near infrared, Adaptive optics, Iterated function systems, Prototyping, Imaging systems

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Proceedings Article | 13 September 2012 Paper

Frida integral field unit opto-mechanical design

Salvador Cuevas, Stephen Eikenberry, Vicente Bringas, Adi Corrales, Carlos Espejo, Diana Lucero, Alberto Rodriguez, Beatriz Sánchez, Jorge Uribe

Proceedings Volume 8450, 84504I (2012) https://doi.org/10.1117/12.925504

KEYWORDS: Mirrors, Iterated function systems, Spectrographs, Ray tracing, Diffraction, Off axis mirrors, Diffraction gratings, Adaptive optics, Imaging systems, Sensors

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Proceedings Article | 9 July 2008 Paper

Cryogenic tests of bimetallic diamond-turned mirrors for the FRIDA integral field unit

Curtis DeWitt, Stephen Eikenberry, Salvador Cuevas Cardona, Oscar Chapa, Carlos Espejo, Carolina Keiman, Beatriz Sanchez

Proceedings Volume 7014, 70142X (2008) https://doi.org/10.1117/12.788419

KEYWORDS: Mirrors, Aluminum, Surface roughness, Cryogenics, Wavefronts, Nickel, Copper, Infrared imaging, Infrared radiation, Light scattering

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Proceedings Article | 9 July 2008 Paper

Optical design of FRIDA, the integral-field spectrograph and imager for the AO system of the Gran Telescopio Canarias

Salvador Cuevas, Stephen Eikenberry, Beatriz Sánchez, Oscar Chapa, Carlos Espejo, Rubén Flores-Meza, Gerardo Lara, Luis Álvarez, Carolina Keiman

Proceedings Volume 7014, 70146D (2008) https://doi.org/10.1117/12.788024

KEYWORDS: Cameras, Spectrographs, Mirrors, Iterated function systems, Imaging systems, Sensors, Diffraction gratings, Optical design, Adaptive optics, Optics manufacturing

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Proceedings Article | 29 June 2006 Paper

FRIDA: integral-field spectrograph and imager for the adaptive optics system of the Gran Telescopio Canarias

J. López, V. Bringas, S. Cuevas, J. Díaz, S. Eikenberry, C. Espejo, R. Estrada, R. Flores-Meza, F. Fuentes, F. Garzón, P. Hammersley, J. Montoya, A. Prieto, B. Sánchez, R. Toral, A. Watson

Proceedings Volume 6269, 62693R (2006) https://doi.org/10.1117/12.671834

KEYWORDS: Cameras, Spectrographs, Adaptive optics, Sensors, Iterated function systems, Imaging systems, Spectral resolution, Imaging spectroscopy, Mirrors, Collimators

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Proceedings Article | 23 June 2006 Paper

Site acceptance of the commissioning instrument for the Gran Telescopio Canarias

Salvador Cuevas, Beatriz Sánchez, Vicente Bringas, Carlos Espejo, Rubén Flores, Oscar Chapa, Gerardo Lara, Armando Chavoya, Gustavo Anguiano, Sadot Arciniega, Ariel Dorantes, José Luis Gonzalez, Juan Manuel Montoya, Rafael Toral, Hugo Hernández, Roberto Nava, Nicholas Devaney, Javier Castro, Lluis Cavaller, Alejandro Farah, Javier Godoy, Francisco Cobos, Carlos Tejada, Fernando Garfias

Proceedings Volume 6267, 62670X (2006) https://doi.org/10.1117/12.672545

KEYWORDS: Collimators, Charge-coupled devices, Telescopes, Optical filters, Image segmentation, Cameras, Glasses, Calibration, Lanthanum, Control systems

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Proceedings Article | 10 February 2006 Paper

The commissioning instrument for the Gran Telescopio Canarias: made in Mexico

Salvador Cuevas, Beatriz Sánchez, Vicente Bringas, Carlos Espejo, Rubén Flores, Oscar Chapa, Gerardo Lara, Armando Chavoya, Gustavo Anguiano, Sadot Arciniega, Ariel Dorantes, José Gonzalez, Juan Montoya, Rafael Toral, Hugo Hernández, Roberto Nava, Nicolas Devaney, Javier Castro, Luis Cavaller, Alejandro Farah, Javier Godoy, Francisco Cobos, Carlos Tejada, Fernando Garfias

Proceedings Volume 6046, 604628 (2006) https://doi.org/10.1117/12.674622

KEYWORDS: Optics manufacturing, Collimators, Telescopes, Charge-coupled devices, Electronics, Polishing, Optical filters, Glasses, Lanthanum, Optical components

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Proceedings Article | 7 March 2003 Paper

OSIRIS tunable imager and spectrograph for the GTC-instrument status

Jordi Cepa, Marta Aguiar-Gonzalez, Jonathan Bland-Hawthorn, Hector Castaneda, Francisco Cobos, Santiago Correa, Carlos Espejo, Ana Fragoso-Lopez, F. Javier Fuentes, Jose Gigante, J. Jesus Gonzalez, Victor Gonzalez-Escalera, Jose Gonzalez-Serrano, Enrique Joven-Alvarez, Jose-Carlos Lopez-Ruiz, Carmelo Militello, Lorenzo Cano, A. Perez, Jaime Perez, Jose Rasilla, Beatriz Sanchez, Carlos Tejada

Proceedings Volume 4841, (2003) https://doi.org/10.1117/12.460913

KEYWORDS: Imaging spectroscopy, Spectroscopes, Cameras, Tunable filters, Sensors, Telescopes, Galactic astronomy, Stars, Optical filters, Molybdenum

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Proceedings Article | 4 February 2003 Paper

Gran Telescopio Canarias Commissioning Instrument optomechanics

Carlos Espejo, Salvador Cuevas, Beatriz Sanchez, Ruben Flores, Gerardo Lara, Alejandro Farah, Javier Godoy, Vicente Bringas, Armando Chavoya, Ariel Dorantes, Juan Manuel Montoya, Juan Carlos Rangel, Nicholas Devaney, Javier Castro, Luis Cavaller

Proceedings Volume 4837, (2003) https://doi.org/10.1117/12.458203

KEYWORDS: Cameras, Collimators, Tolerancing, Image quality, Charge-coupled devices, Telescopes, Optomechanical design, Sensors, Mechanical engineering, Process control

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Proceedings Article | 4 February 2003 Paper

Electronics and acceptance control system for the Gran Telescopio Canarias Commissioning Instrument

Ruben Flores, Gustavo Anguiano, Sadot Arciniega, Gerardo Lara, Beatriz Sanchez, Carlos Espejo, Salvador Cuevas, Vicente Bringas

Proceedings Volume 4837, (2003) https://doi.org/10.1117/12.458196

KEYWORDS: Electronics, Control systems, Switches, Reliability, Calibration, Sensors, Computer programming, Optical filters, Process control

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Proceedings Article | 4 February 2003 Paper

Finite element analysis of the GTC Commissioning Instrument structure

Alejandro Farah, Javier Godoy, F. Velazquez, Carlos Espejo, Salvador Cuevas, Vicente Bringas, A. Manzo, L. del Llano, J. Sanchez, Armando Chavoya, Nicholas Devaney, Javier Castro, Luis Cavaller

Proceedings Volume 4837, (2003) https://doi.org/10.1117/12.457979

KEYWORDS: Finite element methods, Charge-coupled devices, Interfaces, Telescopes, Thermal modeling, Thermal analysis, Manufacturing, CCD image sensors, Instrumentation engineering, Astronomy

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Proceedings Article | 30 January 2003 Paper

Commissioning camera for the Gran Telescopio Canarias

Salvador Cuevas, Carlos Espejo, Beatriz Sanchez, Ruben Flores-Meza, Gerardo Lara, Alejandro Farah Simon, Javier Godoy, Oscar Chapa, Carlos Tejada, Francisco Cobos, Fernando Garfias, Vicente Bringas, Armando Chavoya, Gustavo Anguiano, Sadot Arciniega, Ariel Dorantes, Jose Luis Gonzalez, Juan Manuel Montoya, Rafael Toral, Hugo Hernandez, Roberto Nava, Nicholas Devaney, Javier Castro, Luis Cavaller

Proceedings Volume 4840, (2003) https://doi.org/10.1117/12.459872

KEYWORDS: Cameras, Charge-coupled devices, Optical filters, Collimators, Telescopes, Image segmentation, Sensors, CCD image sensors, CCD cameras, Image filtering

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Showing 5 of 24 publications

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