Dr. José J. San Juan Profile

Dr. José J. San Juan

at Fundación Galileo Galilei INAF

SPIE Involvement:

Author

Publications (17)

Proceedings Article | 11 September 2024 Poster + Paper

Poster + Paper

The commissioning of the Low-Cost NIR Extended Solar Telescope (LOCNES)

R. Claudi, L. Cabona, A. Ghedina, A. Harutyunyan, J. Liu, E. Pace, S. Stefani, A. Tozzi, I. Carleo, L. Di Fabrizio, V. D'Orazi, M. Gonzalez, V. Guerra Padilla, A. Lanza, M. Lodi, G. Micela, H. Pérez Ventura, G. Piccioni, M. Rainer, A. Riverol Rodríguez, J. San Juan Gómez

Proceedings Volume 13094, 1309456 (2024) https://doi.org/10.1117/12.3018862

KEYWORDS: Sun, Near infrared, Telescopes, Stars, Spectrographs, Solar telescopes, Inhomogeneities, Cameras, Calibration, Observatories

Read Abstract +

Proceedings Article | 11 September 2024 Poster + Paper

Poster + Paper

Telescopio Nazionale Galileo control system upgrade

M. González, P. Schipani, H. Pérez Ventura, M. Hernández Díaz, A. Ghedina, A. Galli, J. Guerra, N. Hérnandez, M. Lodi, J. San Juan, C. Riverol, L. Riverol, M. Colapietro, S. Savarese

Proceedings Volume 13094, 1309441 (2024) https://doi.org/10.1117/12.3018705

KEYWORDS: Control systems, Telescopes, Field programmable gate arrays, Equipment, LabVIEW, Computer programming, Astronomy, Algorithm development, Standards development

Read Abstract +

Proceedings Article | 29 August 2022 Poster + Paper

Poster + Paper

SiFAP4XP: time domain polarimetry with silicon photometers at the TNG

A. Ghedina, F. Ambrosino, M. Cecconi, M. G. Gonzalez, L. Riverol, M. Hernandez, H. Pérez Ventura, J. J. San Juan, J. Guerra, M. Lodi, N. Hernandez, M. De Benedetto, A. Papitto, F. Leone, F. Meddi, Ennio Poretti

Proceedings Volume 12184, 121847U (2022) https://doi.org/10.1117/12.2629295

KEYWORDS: Photometry, Polarimetry, Cameras, Silicon, Stars, Sensors, Prisms, Global Positioning System, Electronics, Clocks, Pulsars

Read Abstract +

Proceedings Article | 13 December 2020 Poster + Paper

Poster + Paper

Telescopio Nazionale Galileo control system upgrade, new milestone achieved: azimuth axis completed

M. González, H. Pérez Ventura, M. Hernández Diaz, P. Schipani, A. Ghedina, J. San Juan , N. Hernández, J. Guerra, M. Lodi, L. Riverol , C. Riverol, C. González, A. Galli, M. Colapietro, S. Savarese

Proceedings Volume 11445, 1144550 (2020) https://doi.org/10.1117/12.2560252

KEYWORDS: Control systems, Telescopes, Algorithm development, Standards development, LabVIEW, Visualization, Computer programming languages, Computer programming

Read Abstract +

Proceedings Article | 13 December 2020 Poster + Paper

Poster + Paper

LOCNES: A solar telescope to study the stellar activity in the near infrared

R. Claudi, A. Ghedina, E. Pace, A. M. Di Giorgio, V. D'Orazi, L. Gallorini, A. Lanza, S. Liu, M. Rainer, A. Tozzi, I. Carleo, J. Maldonado Prado, G. Micela, E. Molinari, E. Poretti, D. Phillips, G. Tripodo, M. Cecconi, A. Galli, M. D. Gonzalez, V. Guerra Padilla, J. G. Guerra Ramón, A. Harutyunyan, N. Hernández Cáceres, M. Hernández Díaz, M. Lodi, H. Pérez Ventura, A. L. Riverol Rodríguez, C. A. Riverol Rodríguez, J. San Juan Gómez

Proceedings Volume 11445, 114452S (2020) https://doi.org/10.1117/12.2562231

KEYWORDS: Near infrared, Solar telescopes, Stars, Sun, Spectrographs, Optical fibers, Signal to noise ratio, Calibration, Planets, Magnetism

Read Abstract +

Proceedings Article | 10 July 2018 Paper

Paper

GIANO-B online data reduction software at the TNG

Avet Harutyunyan, Monica Rainer, Nauzet Hernandez, Ernesto Oliva, Jose Guerra, Marcello Lodi, Jose San Juan, Andrea Bignamini, Adriano Ghedina, Francesca Ghinassi, Emilio Molinari, Serena Benatti, Ilaria Carleo, Riccardo Claudi, Giuseppina Micela, Andrea Tozzi, Carlo Baffa, Andrea Baruffolo, Valdemaro Biliotti, Nicolas Buchschacher, Massimo Cecconi, Rosario Cosentino, Gilberto Falcini, Daniela Fantinel, Luca Fini, Alberto Galli, Elisabetta Giani, Carlos Gonzalez, Esther Gonzalez-Alvarez, Manuel Gonzalez, Raffaele Gratton, Marcos Hernandez Diaz, Marcella Iuzzolino, Luca Malavolta, Jesus Maldonado, Livia Origlia, Ennio Poretti, Hector Perez Ventura, Alfio Puglisi, Carlos Riverol, Luis Riverol, Nicoletta Sanna, Salvatore Scuderi, Ulf Seeman, Alessandro Sozzetti, Mauro Sozzi

Proceedings Volume 10706, 1070642 (2018) https://doi.org/10.1117/12.2312690

KEYWORDS: Data archive systems, Databases, Data processing, Near infrared

Read Abstract +

Proceedings Article | 8 July 2018 Paper

Paper

SIFAP2: a new versatile configuration at the TNG for the MPPC based photometer

A. Ghedina, F. Leone, F. Ambrosino, F. Meddi, A. Papitto, L. Riverol, M. Hernandez, M. Cecconi, M. D. Gonzalez G., H. Perez Ventura, J. J. San Juan

Proceedings Volume 10702, 107025Q (2018) https://doi.org/10.1117/12.2316348

KEYWORDS: Photometry, Polarization, Stars, Analog electronics, Polarimetry, Wave plates, Telescopes, Pulsars, Sensors, Astronomy

Read Abstract +

The quality of SiFAP (Silicon Fast Astronomical Photometer) at the TNG has already shown its ability to easily detect optical pulses from transitional millisecond pulsars and from other slower neutron stars. Up to now the photometer based on Silicon Photo Multipliers manufactured by Hamamatsu Photonics (MPPC, Multi Pixel Photon Counter) was mounted (on and manually aligned with) a MOS mask at the F/11 focal plane of the telescope. In order to have a more versatile instrument with the possibility to remotely center and point several targets during the night we have decided to build a new mechanical support for the MPPCs and mount it on the Namsyth Interface (NI), where originally OIG and later GIANO were hosted. The MPPC module devoted to observe the target will be placed at the center of the FoV (on-axis), while the reference signal will be collected from a peripheral star in the FoV (Field of view) by means of the MPPC module that will be set at this position by a combination of a linear stage movement and a derotator angle. At the same time we have introduced the option for a polarimetric mode, with a 3rd MPPC module and a polarizing cube beam-splitter that separates the states between this and the on axis MPPC. SiFAP has been developed with 3 independent custom electronic chains for data acquisition, exploiting the 3 different outputs (analog, digital, USB pre-processed) provided by the MPPCs modules. The electronic chain fed by the analog output is able to tag a single photon ToA (Time of Arrival) with a time resolution of 25 ns, while the remaining electronic chains can integrate the signal into time bins from 100 ms down to 20 μs. The absolute time is provided by a GPS unit with a time resolution of 25 ns at 50% of the rising edge of the 1PPS (1 Pulse Per Second) signal which is linked to the UTC (Universal Time Coordinated). Apart from the versatility with the remotely controlled on sky configuration of the MPPCs, the mounting of SiFAP2 at the NI allows for a permanent hosting of the instrument, readily available for observations. The new polarimetric mode will then offer other scientific opportunities that have not been explored so far in high-temporal resolution astronomy.

Proceedings Article | 6 July 2018 Presentation + Paper

Presentation + Paper

GIARPS: commissioning and first scientific results

R. Claudi, S. Benatti, I. Carleo, A. Ghedina, J. Guerra, F. Ghinassi, A. Harutyunyan, G. Micela, E. Molinari, E. Oliva, M. Rainer, A. Tozzi, C. Baffa, A. Baruffolo, V. Biliotti, N. Buchschacher, M. Cecconi, R. Cosentino, G. Falcini, D. Fantinel, L. Fini, E. Giani, E. Gonzalez-Alvarez, M. Gonzalez, C. Gonzalez, R. Gratton, N. Hernandez, M. Iuzzolino, M. Lodi, L. Malavolta, J. Maldonado, L. Origlia, A. Puglisi, N. Sanna, J. San Juan Gómez, S. Scuderi, U. Seemann, A. Sozzetti, M. Sozzi, H. Perez Ventura, M. Hernandez Diaz, A. Galli, L. Riverol, C. Riverol

Proceedings Volume 10702, 107020Z (2018) https://doi.org/10.1117/12.2312555

KEYWORDS: Stars, Near infrared, Spectrographs, Planets, Calibration, Jupiter, Telescopes, Observatories, Exoplanets, Spectroscopy

Read Abstract +

Proceedings Article | 6 July 2018 Paper

Paper

Introducing GOFIO: a DRS for the GIANO-B near-infrared spectrograph

Monica Rainer, Avet Harutyunyan, Ilaria Carleo, Ernesto Oliva, Serena Benatti, Andrea Bignamini, Riccardo Claudi, Esther Gonzalez-Alvarez, Nicoletta Sanna, Adriano Ghedina, Giuseppina Micela, Emilio Molinari, Andrea Tozzi, Carlo Baffa, Andrea Baruffolo, Nicolas Buchschacher, Massimo Cecconi, Rosario Cosentino, Gilberto Falcini, Daniela Fantinel, Luca Fini, Alberto Galli, Francesca Ghinassi, Elisabetta Giani, Carlos Gonzalez, Manuel Gonzalez, Raffaele Gratton, Jose Guerra, Marcos Hernandez Diaz, Nauzet Hernandez, Marcella Iuzzolino, Marcello Lodi, Luca Malavolta, Jesus Maldonado, Livia Origlia, Hector Perez Ventura, Alfio Puglisi, Carlos Riverol, Luis Riverol, Jose San Juan, Salvo Scuderi, Ulf Seeman, Alessandro Sozzetti, Mauro Sozzi

Proceedings Volume 10702, 1070266 (2018) https://doi.org/10.1117/12.2312130

KEYWORDS: Calibration, Lamps, Sensors, Spectrographs, Signal to noise ratio, Infrared radiation, Spectroscopy, Signal detection, Data processing, Near infrared spectroscopy

Read Abstract +

Proceedings Article | 9 August 2016 Paper

Paper

The HARPS-North@TNG polarimeter

Francesco Leone, Massimo Cecconi, Rosario Cosentino, Adriano Ghedina, Marina Giarrusso, Marcos Hernandez Diaz, Manuel Gonzalez, Matteo Munari, Héctor Pérez Ventura, Luis Riverol, José San Juan Gómez, Salvatore Scuderi

Proceedings Volume 9908, 99087K (2016) https://doi.org/10.1117/12.2231781

KEYWORDS: Polarimetry, Spectrographs, Mirrors, Wave plates, Cameras, Telescopes, Polarizers, Interfaces, Polarization, Device simulation

Read Abstract +

Proceedings Article | 4 August 2016 Paper

Paper

GIARPS: the unique VIS-NIR high precision radial velocity facility in this world

R. Claudi, S. Benatti, I. Carleo, A. Ghedina, E. Molinari, E. Oliva, A. Tozzi, A. Baruffolo, M. Cecconi, R. Cosentino, D. Fantinel, L. Fini, F. Ghinassi, M. Gonzalez, R. Gratton, J. Guerra, A. Harutyunyan, N. Hernandez, M. Iuzzolino, M. Lodi, L. Malavolta, J. Maldonado, G. Micela, N. Sanna, J. Sanjuan, S. Scuderi, A. Sozzetti, H. Pérez Ventura, H. Diaz Marcos, A. Galli, C. Gonzalez, L. Riverol, C. Riverol

Proceedings Volume 9908, 99081A (2016) https://doi.org/10.1117/12.2231845

KEYWORDS: Stars, Spectrographs, Near infrared, Planets, Optical fibers, Telescopes, Calibration, Visible radiation, Lamps, Spectroscopy

Read Abstract +

Proceedings Article | 28 July 2014 Paper

Paper

A polarimetric unit for HARPS-North at the Telescopio Nazionale Galileo: HANPO

Francesco Leone, Massimo Cecconi, Rosario Cosentino, Adriano Ghedina, Marina Giarrusso, Manuel Gonzalez, Vania Lorenzi, Matteo Munari, Hector Perez Ventura, Luis Riverol, Jose San Juan, Salvatore Scuderi

Proceedings Volume 9147, 91472F (2014) https://doi.org/10.1117/12.2054757

KEYWORDS: Prisms, Polarimetry, Wave plates, Mirrors, Polarization, Space telescopes, Telescopes, Optical fibers, Spectrographs, Polarizers

Read Abstract +

Proceedings Article | 24 July 2014 Paper

Paper

ARDOLORES: an Arduino based motors control system for DOLORES

Manuel Gonzalez, H. Ventura, J. San Juan, L. Di Fabrizio

Proceedings Volume 9147, 91474X (2014) https://doi.org/10.1117/12.2055938

KEYWORDS: Computer programming, Control systems, Telescopes, Switches, Electronics, Java, Human-machine interfaces, Telecommunications, Astronomy, Interfaces

Read Abstract +

Proceedings Article | 18 July 2014 Paper

Paper

OCS: towards a more efficient telescope

Jose Guerra, Jose San Juan , Marcello Lodi, Nauzet Hernandez

Proceedings Volume 9152, 91521S (2014) https://doi.org/10.1117/12.2056498

KEYWORDS: Telescopes, Interfaces, Polarimetry, Active optics, Reliability, Control systems, Computer architecture, Network architectures, Astronomical telescopes, Switches

Read Abstract +

Proceedings Article | 24 September 2012 Paper

Paper

The future of TNG telescope control system

Jose Guerra, Jose San Juan, Marcello Lodi, Nauzet Hernandez

Proceedings Volume 8451, 84512F (2012) https://doi.org/10.1117/12.926359

KEYWORDS: Telescopes, Control systems, Astronomy, Current controlled current source, Computer architecture

Read Abstract +

Proceedings Article | 24 September 2012 Paper

Paper

Harps-N: the new planet hunter at TNG

Rosario Cosentino, Christophe Lovis, Francesco Pepe, Andrew Collier Cameron, David Latham, Emilio Molinari, Stephane Udry, Naidu Bezawada, Martin Black, Andy Born, Nicolas Buchschacher, Dave Charbonneau, Pedro Figueira, Michel Fleury, Alberto Galli, Angus Gallie, Xiaofeng Gao, Adriano Ghedina, Carlos Gonzalez, Manuel Gonzalez, Jose Guerra, David Henry, Keith Horne, Ian Hughes, Dennis Kelly, Marcello Lodi, David Lunney, Charles Maire, Michel Mayor, Giusi Micela, Mark Ordway, John Peacock, David Phillips, Giampaolo Piotto, Don Pollacco, Didier Queloz, Ken Rice, Carlos Riverol, Luis Riverol, Jose San Juan, Dimitar Sasselov, Damien Segransan, Alessandro Sozzetti, Danuta Sosnowska, Brian Stobie, Andrew Szentgyorgyi, Andy Vick, Luc Weber

Proceedings Volume 8446, 84461V (2012) https://doi.org/10.1117/12.925738

KEYWORDS: Calibration, Spectrographs, Optical fibers, Charge-coupled devices, Telescopes, Stars, Sensors, Control systems, Lamps, Planets

Read Abstract +

Proceedings Article | 17 September 2012 Paper

Paper

The new TNG-DIMM: calibrations and first data analysis

Emilio Molinari, A. de Gurtubai, A. della Valle, S. Ortolani, J. San Juan, A. Martinez Fiorenzano, V. Zitelli

Proceedings Volume 8444, 844462 (2012) https://doi.org/10.1117/12.925900

KEYWORDS: Principal component analysis, Telescopes, Stars, Calibration, Charge-coupled devices, Sensors, Data analysis, Control systems, Temperature metrology, Astronomy

Read Abstract +

Showing 5 of 17 publications

SIGN IN TO:

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Advertisement

Advertisement