Dr. John S. Young Profile

Dr. John S. Young

Senior Research Associate at Univ of Cambridge

SPIE Involvement:

Author

Publications (86)

Proceedings Article | 9 July 2018

Aperture synthesis imaging of colored GEO objects

John Young, Christopher Haniff, David Buscher, Tanish Satoor, Matthew Le Maître, Michelle Creech-Eakman, Ifan Payne

Proc. SPIE. 10701, Optical and Infrared Interferometry and Imaging VI

KEYWORDS: Telescopes, Data modeling, Interferometers, Satellites, Image restoration, Satellite imaging, Spatial resolution

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Proceedings Article | 9 July 2018

Planet formation imager: project update

John Monnier, Michael Ireland, Stefan Kraus, Almudena Alonso-Herrero, Amy Bonsor, Fabien Baron, Amelia Bayo, Jean-Philippe Berger, Tabetha Boyajian, Andrea Chiavassa, David Ciardi, Michelle Creech-Eakman, Willem-Jan de Wit, Denis Defrère, Ruobing Dong, Gaspard Duchêne, Catherine Espaillat, Alexandre Gallenne, Poshak Gandhi, Jean-Francois Gonzalez, Chris Haniff, Sebastian Hoenig, John Ilee, Andrea Isella, Eric Jensen, Attila Juhasz, Stephen Kane, Makoto Kishimoto, Wilhelm Kley, Quentin Kral, Kaitlin Kratter, Lucas Labadie, Sylvestre Lacour, Greg Laughlin, Jean-Baptiste Le Bouquin, Ernest Michael, Farzana Meru, Rafael Millan-Gabet, Florentin Millour, Stefano Minardi, Alessandro Morbidelli, Chris Mordasini, Andreas Morlok, Dave Mozurkewich, Richard Nelson, Johan Olofsson, Rene Oudmaijer, Chris Packham, Claudia Paladini, Olja Panic, Romain Petrov, Benjamin Pope, Joerg-Uwe Pott, Luis Henry Quiroga-Nunez, Cristina Ramos Almeida, Sean Raymond, Zsolt Regaly, Mark Reynolds, Stephen Ridgway, Stephen Rinehart, Matthias Schreiber, Michael Smith, Keivan Stassun, Jean Surdej, Theo ten Brummelaar, Konrad Tristram, Neal Turner, Peter Tuthill, Gerard van Belle, Gautum Vasisht, Alexander Wallace, Gerd Weigelt, Edward Wishnow, Markus Wittkowski, Sebastian Wolf, John Young, Ming Zhao, Zhaohuan Zhu, Sebastian Zúñiga-Fernández

Proc. SPIE. 10701, Optical and Infrared Interferometry and Imaging VI

KEYWORDS: Signal to noise ratio, Mid-IR, Telescopes, Stars, Interferometers, Interferometry, Exoplanets, Space telescopes, Heterodyning, Planets

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Proceedings Article | 9 July 2018

Towards integration of the Unit Telescope for the Magdalena Ridge Observatory interferometer

Andres Olivares, Fernando Santoro, Christopher Salcido, Robert Ligon, Chuck Dahl, Perry Johnston, Robert Blasi, Allen Farris, Dylan Etscorn, Michelle Creech-Eakman, Ifan Payne, John Young, Davide Marzotto, Olivier Pirnay

Proc. SPIE. 10701, Optical and Infrared Interferometry and Imaging VI

KEYWORDS: Telescopes, Mirrors, Safety, Interferometers, Cameras, Optical fabrication, Telecommunications, Optical alignment, Analytical research, Magdalena Ridge Observatory

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Proceedings Article | 9 July 2018

The Magdalena Ridge Observatory interferometer: first light and deployment of the first telescope on the array

M. Creech-Eakman, V. Romero, I. Payne, C. Haniff, D. Buscher, J. Young, F. Santoro, R. Blasi, C. Dahl, J. Dooley, D. Etscorn, A. Farris, M. Fisher, E. Garcia, C. Gino, B. Jaynes, L. Jencka, P. Johnston, C. Jurgenson, R. Kelly, D. Klinglesmith, E. R. Ligon, J. Luis, T. McCracken, C. McKeen, D. Mortimer, D. Ochoa, A. Olivares, J. Pino, C. Salcido, L. Schmidt, E. Seneta, X. Sun, D. Wilson

Proc. SPIE. 10701, Optical and Infrared Interferometry and Imaging VI

KEYWORDS: Telescopes, Mirrors, Interferometers, Sensors, Interferometry, Space telescopes, Relays, Reflector telescopes, Optical instrument design, Magdalena Ridge Observatory

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The Magdalena Ridge Observatory Interferometer (MROI) has been under development for almost two decades. Initial funding for the facility started before the year 2000 under the Army and then Navy, and continues today through the Air Force Research Laboratory. With a projected total cost of substantially less than $200M, it represents the least expensive way to produce sub-milliarcsecond optical/near-infrared images that the astronomical community could invest in during the modern era, as compared, for instance, to extremely large telescopes or space interferometers. The MROI, when completed, will be comprised of 10 x1.4m diameter telescopes distributed on a Y-shaped array such that it will have access to spatial scales ranging from about 40 milliarcseconds down to less than 0.5 milliarcseconds. While this type of resolution is not unprecedented in the astronomical community, the ability to track fringes on and produce images of complex targets approximately 5 magnitudes fainter than is done today represents a substantial step forward. All this will be accomplished using a variety of approaches detailed in several papers from our team over the years. Together, these two factors, multiple telescopes deployed over very long-baselines coupled with fainter limiting magnitudes, will allow MROI to conduct science on a wide range and statistically meaningful samples of targets. These include pulsating and rapidly rotating stars, mass-loss via accretion and mass-transfer in interacting systems, and the highly-active environments surrounding black holes at the centers of more than 100 external galaxies. This represents a subsample of what is sure to be a tremendous and serendipitous list of science cases as we move ahead into the era of new space telescopes and synoptic surveys. Additional investigations into imaging man-made objects will be undertaken, which are of particular interest to the defense and space-industry communities as more human endeavors are moved into the space environment.

In 2016 the first MROI telescope was delivered and deployed at Magdalena Ridge in the maintenance facility. Having undergone initial check-out and fitting the system with optics and a fast tip-tilt system, we eagerly anticipate installing the telescope enclosure in 2018. The telescope and enclosure will be integrated at the facility and moved to the center of the interferometric array by late summer of 2018 with a demonstration of the performance of an entire beamline from telescope to beam combiner table shortly thereafter. At this point, deploying two more telescopes and demonstrating fringe-tracking, bootstrapping and limiting magnitudes for the facility will prove the full promise of MROI. A complete status update of all subsystems follows in the paper, as well as discussions of potential collaborative initiatives.

Proceedings Article | 9 July 2018

Optical interferometry image reconstruction contest VIII

Antoine Mérand, Antxon Alberdid, Jacques Kluska, Isabelle Tallon-Bosc, Michel Tallon, Éric Thiébaut, Joel Sánchez-Bermudez, Rainer Schödel, Ferréol Soulez, John Young

Proc. SPIE. 10701, Optical and Infrared Interferometry and Imaging VI

KEYWORDS: Data modeling, Image restoration, Interferometry, Optical interferometry, Reconstruction algorithms

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Proceedings Article | 9 July 2018

The MROI fringe tracking system: camera hardware modifications to integrate the SAPHIRA detector

R. Ligon, C. Salcido, D. Buscher, M. Creech-Eakman, C. Haniff, F. Santoro, C. Jurgenson, T. McCracken, L. Schmidt, J. Young

Proc. SPIE. 10701, Optical and Infrared Interferometry and Imaging VI

KEYWORDS: Zemax, Monochromatic aberrations, Spectrographs, Electronics, Imaging systems, Cameras, Sensors, Interferometry, Optical alignment, Tolerancing

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Proceedings Article | 9 July 2018

Panel discussion: next steps for OIFITS

John Young, Michael Ireland, Xavier Haubois

Proc. SPIE. 10701, Optical and Infrared Interferometry and Imaging VI

KEYWORDS: Astronomy, Interferometers, Interferometry, Optical interferometry, Standards development

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Proceedings Article | 6 July 2018

Design and integration of the HARPS3 software system

John Young, Tim Naylor, Martyn Brake, Martin Fisher, Eugene Seneta, Peter Kunst, Francesco Pepe, Danuta Sosnowska

Proc. SPIE. 10707, Software and Cyberinfrastructure for Astronomy V

KEYWORDS: Telescopes, Spectrographs, Robotics, Computing systems, Control systems, Software development

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Proceedings Article | 6 July 2018

Implementing the Magdalena Ridge Observatory interferometer supervisory system

Allen Farris, Robert Blasi, Robert Kelly, Louis Jencka, John Young, Eugene Seneta

Proc. SPIE. 10707, Software and Cyberinfrastructure for Astronomy V

KEYWORDS: Human-machine interfaces, Telescopes, Interferometers, Databases, Interfaces, Computing systems, Java, Distributed computing, Device simulation, Magdalena Ridge Observatory

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Proceedings Article | 9 August 2016

HARPS3 for a roboticized Isaac Newton Telescope

Samantha Thompson, Didier Queloz, Isabelle Baraffe, Martyn Brake, Andrey Dolgopolov, Martin Fisher, Michel Fleury, Joost Geelhoed, Richard Hall, Jonay González Hernández, Rik ter Horst, Jan Kragt, Ramón Navarro, Tim Naylor, Francesco Pepe, Nikolai Piskunov, Rafael Rebolo, Louis Sander, Damien Ségransan, Eugene Seneta, David Sing, Ignas Snellen, Frans Snik, Julien Spronck, Eric Stempels, Xiaowei Sun, Samuel Santana Tschudi, John Young

Proc. SPIE. 9908, Ground-based and Airborne Instrumentation for Astronomy VI

KEYWORDS: Telescopes, Mirrors, Spectrographs, Stars, Sensors, Calibration, Robotics, Polarimetry, Control systems, Signal detection

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Proceedings Article | 4 August 2016

High fidelity imaging of geosynchronous satellites with the MROI

John Young, Christopher Haniff, David Buscher, Michelle Creech-Eakman, Ifan Payne

Proc. SPIE. 9907, Optical and Infrared Interferometry and Imaging V

KEYWORDS: Telescopes, Spatial frequencies, Interferometers, Satellites, Satellites, Interferometry, Satellite imaging, Space telescopes, Spatial resolution, Earth observing sensors, Earth observing sensors, Visibility

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Proceedings Article | 4 August 2016

Practical beam transport for PFI

David Mozurkewich, John Young, Michael Ireland

Proc. SPIE. 9907, Optical and Infrared Interferometry and Imaging V

KEYWORDS: Mid-IR, Telescopes, Mirrors, Lenses, Signal attenuation, Image processing, Interferometry, Wave propagation, Relays, Planets, Planets

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Proceedings Article | 4 August 2016

Progress towards photon-counting infrared arrays for interferometry

David Buscher, Eugene Seneta, Xiaowei Sun, John Young, Gert Finger

Proc. SPIE. 9907, Optical and Infrared Interferometry and Imaging V

KEYWORDS: Signal to noise ratio, Infrared sensors, Photodetectors, Photon counting, Sensors, Electrons, Interferometry, Interference (communication), Infrared radiation, Cryogenics

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Proceedings Article | 4 August 2016

Status of the Planet Formation Imager (PFI) concept

Michael Ireland, John Monnier, Stefan Kraus, Andrea Isella, Stefano Minardi, Romain Petrov, Theo ten Brummelaar, John Young, Gautam Vasisht, David Mozurkewich, Stephen Rinehart, Ernest Michael, Gerard van Belle, Julien Woillez

Proc. SPIE. 9907, Optical and Infrared Interferometry and Imaging V

KEYWORDS: Signal to noise ratio, Telescopes, Optical spheres, Stars, Imaging systems, Adaptive optics, Space telescopes, Heterodyning, Planets, Optical instrument design

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Proceedings Article | 4 August 2016

The 2016 interferometric imaging beauty contest

J. Sanchez-Bermudez, E. Thiébaut, K.-H. Hofmann, M. Heininger, D. Schertl, G. Weigelt, F. Millour, A. Schutz, A. Ferrari, M. Vannier, D. Mary, J. Young

Proc. SPIE. 9907, Optical and Infrared Interferometry and Imaging V

KEYWORDS: Stars, Spatial frequencies, Image processing, Image restoration, Image restoration, Interferometry, Image quality, Optical interferometry, Reconstruction algorithms, Device simulation, Visibility

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Proceedings Article | 4 August 2016

A new path to first light for the Magdalena Ridge Observatory interferometer

M. Creech-Eakman, V. Romero, I. Payne, C. Haniff, D. Buscher, J. Young, R. Cervantes, C. Dahl, A. Farris, M. Fisher, P. Johnston, D. Klinglesmith, H. Love, D. Ochoa, A. Olivares, J. Pino, C. Salcido, F. Santoro, L. Schmidt, E. Seneta, X. Sun, L. Jenka, R. Kelly, J. Price, A. Rea, J. Riker, S. Rochelle

Proc. SPIE. 9907, Optical and Infrared Interferometry and Imaging V

KEYWORDS: Telescopes, Telescopes, Interferometers, Sensors, Interfaces, Interferometry, Space telescopes, Space telescopes, Relays, Infrared radiation, Situational awareness sensors, Magdalena Ridge Observatory

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The Magdalena Ridge Observatory Interferometer (MROI) was the most ambitious infrared interferometric facility conceived of in 2003 when funding began. Today, despite having suffered some financial short-falls, it is still one of the most ambitious interferometric imaging facilities ever designed. With an innovative approach to attaining the original goal of fringe tracking to H = 14^th magnitude via completely redesigned mobile telescopes, and a unique approach to the beam train and delay lines, the MROI will be able to image faint and complex objects with milliarcsecond resolutions for a fraction of the cost of giant telescopes or space-based facilities. The design goals of MROI have been optimized for studying stellar astrophysical processes such as mass loss and mass transfer, the formation and evolution of YSOs and their disks, and the environs of nearby AGN.

The global needs for Space Situational Awareness (SSA) have moved to the forefront in many communities as Space becomes a more integral part of a national security portfolio. These needs drive imaging capabilities ultimately to a few tens of centimeter resolution at geosynchronous orbits. Any array capable of producing images on faint and complex geosynchronous objects in just a few hours will be outstanding not only as an astrophysical tool, but also for these types of SSA missions. With the recent infusion of new funding from the Air Force Research Lab (AFRL) in Albuquerque, NM, MROI will be able to attain first light, first fringes, and demonstrate bootstrapping with three telescopes by 2020.

MROI’s current status along with a sketch of our activities over the coming 5 years will be presented, as well as clear opportunities to collaborate on various aspects of the facility as it comes online. Further funding is actively being sought to accelerate the capability of the array for interferometric imaging on a short time-scale so as to achieve the original goals of this ambitious facility

Proceedings Article | 4 August 2016

User-friendly imaging algorithms for interferometry

John Young, Éric Thiébaut, Gilles Duvert, Martin Vannier, Paulo Garcia, Guillaume Mella

Proc. SPIE. 9907, Optical and Infrared Interferometry and Imaging V

KEYWORDS: Human-machine interfaces, Detection and tracking algorithms, Data modeling, Image processing, Image restoration, Interferometry, Optical interferometry, Reconstruction algorithms, Algorithm development, Prototyping

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Proceedings Article | 4 August 2016

Architecture design study and technology road map for the Planet Formation Imager (PFI)

John Monnier, Michael Ireland, Stefan Kraus, Fabien Baron, Michelle Creech-Eakman, Ruobing Dong, Andrea Isella, Antoine Merand, Ernest Michael, Stefano Minardi, David Mozurkewich, Romain Petrov, Stephen Rinehart, Theo ten Brummelaar, Gautam Vasisht, Ed Wishnow, John Young, Zhaohuan Zhu

Proc. SPIE. 9907, Optical and Infrared Interferometry and Imaging V

KEYWORDS: Signal to noise ratio, Mid-IR, Telescopes, Stars, Imaging systems, Image restoration, L band, Heterodyning, Planets, Visibility

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The Planet Formation Imager (PFI) Project has formed a Technical Working Group (TWG) to explore possible facility architectures to meet the primary PFI science goal of imaging planet formation in situ in nearby starforming regions. The goals of being sensitive to dust emission on solar system scales and resolving the Hill-sphere around forming giant planets can best be accomplished through sub-milliarcsecond imaging in the thermal infrared. Exploiting the 8-13 micron atmospheric window, a ground-based long-baseline interferometer with approximately 20 apertures including 10km baselines will have the necessary resolution to image structure down 0.1 milliarcseconds (0.014 AU) for T Tauri disks in Taurus. Even with large telescopes, this array will not have the sensitivity to directly track fringes in the mid-infrared for our prime targets and a fringe tracking system will be necessary in the near-infrared. While a heterodyne architecture using modern mid-IR laser comb technology remains a competitive option (especially for the intriguing 24 and 40μm atmospheric windows), the prioritization of 3-5μm observations of CO/H2O vibrotational levels by the PFI-Science Working Group (SWG) pushes the TWG to require vacuum pipe beam transport with potentially cooled optics. We present here a preliminary study of simulated L- and N-band PFI observations of a realistic 4-planet disk simulation, finding 21x2.5m PFI can easily detect the accreting protoplanets in both L and N-band but can see non-accreting planets only in L band. We also find that even an ambitious PFI will lack sufficient surface brightness sensitivity to image details of the fainter emission from dust structures beyond 5 AU, unless directly illuminated or heated by local energy sources. That said, the utility of PFI at N-band is highly dependent on the stage of planet formation in the disk and we require additional systematic studies in conjunction with the PFI-SWG to better understand the science capabilities of PFI, including the potential to resolve protoplanetary disks in emission lines to measure planet masses using position-velocity diagrams. We advocate for a specific technology road map in order to reduce the current cost driver (telescopes) and to validate high accuracy fringe tracking and high dynamic range imaging at L, M band. In conclusion, no technology show-stoppers have been identified for PFI to date, however there is high potential for breakthroughs in medium-aperture (4-m class) telescopes architecture that could reduce the cost of PFI by a factor of 2 or more.

Proceedings Article | 26 July 2016

OIFITS version 2: the new standard for optical/IR interferometry data exchange

Gilles Duvert, John Young, Christian Hummel

Proc. SPIE. 9907, Optical and Infrared Interferometry and Imaging V

KEYWORDS: Observatories, Telescopes, Polarization, Interferometers, Calibration, Interferometry, Optical interferometry, Infrared radiation, Binary data, Visibility

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Proceedings Article | 24 July 2014

Magdalena Ridge Observatory interferometer: 2014 status update

M. Creech-Eakman, V. Romero, I. Payne, C. Haniff, D. Buscher, C. Dahl, A. Farris, M. Fisher, C. Jurgenson, D. Klinglesmith, T. McCracken, M. Napolitano, A. Olivares, J. Riker, S. Rochelle, C. Salcido, F. Santoro, L. Schmidt, R. Selina, E. Seneta, A. Shtromberg, X. Sun, D.M.A. Wilson, J. Young

Proc. SPIE. 9146, Optical and Infrared Interferometry IV

KEYWORDS: Observatories, Telescopes, Mirrors, Interferometers, Space telescopes, Relays, Optical alignment, Optical instrument design, Prototyping, Magdalena Ridge Observatory

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Proceedings Article | 24 July 2014

The 2014 interferometric imaging beauty contest

John Monnier, Jean-Philippe Berger, Jean-Baptiste Le Bouquin, Peter Tuthill, Markus Wittkowski, Rebekka Grellmann, André Müller, Sridhar Renganswany, Christian Hummel, Karl-Heinz Hofmann, Dieter Schertl, Gerd Weigelt, John Young, David Buscher, Joel Sanchez-Bermudez, Antxon Alberdi, Rainer Schoedel, Rainer Köhler, Ferréol Soulez, Éric Thiébaut, Jacques Kluska, Fabien Malbet, Gilles Duvert, Stefan Kraus, Brian Kloppenborg, Fabien Baron, Willem-Jan de Wit, Thomas Rivinius, Antoine Merand

Proc. SPIE. 9146, Optical and Infrared Interferometry IV

KEYWORDS: Telescopes, Stars, Data modeling, Image processing, Image restoration, Interferometry, Optical interferometry, Reconstruction algorithms, Spatial resolution, Visibility

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Proceedings Article | 24 July 2014

The performance of the MROI fast tip-tilt correction system

John Young, David Buscher, Martin Fisher, Christopher Haniff, Alexander Rea, Eugene Seneta, Xiaowei Sun, Donald Wilson, Allen Farris, Andres Olivares

Proc. SPIE. 9146, Optical and Infrared Interferometry IV

KEYWORDS: Human-machine interfaces, Telescopes, Mirrors, Cameras, Sensors, Interfaces, Control systems, Electron multiplying charge coupled devices, Optical benches, Temperature metrology

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Proceedings Article | 24 July 2014

The MROI fringe tracker: laboratory tracking with ICONN

T. McCracken, C. Jurgenson, J. Young, E. Seneta, D. Buscher, C. Haniff, M. Creech-Eakman, F. Santoro, A. Shtromberg, L. Schmidt, S. Rochelle

Proc. SPIE. 9146, Optical and Infrared Interferometry IV

KEYWORDS: Mirrors, Spectrographs, Detection and tracking algorithms, Polarization, Interferometers, Sensors, Wavefronts, Optical alignment, Visibility, Magdalena Ridge Observatory

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Proceedings Article | 12 September 2012

The MROI fringe tracker: closing the loop on ICoNN

T. McCracken, C. Jurgenson, F. Santoro, A. Shtromberg, V. Alvidrez, N. Torres, C. Dahl, A. Farris, D. Buscher, C. Haniff, J. Young, E. Seneta, M. Creech-Eakman

Proc. SPIE. 8445, Optical and Infrared Interferometry III

KEYWORDS: Spectrographs, Light sources, Detection and tracking algorithms, Modulation, Interferometers, Cameras, Sensors, Calibration, Control systems, Modulators

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Proceedings Article | 12 September 2012

The Magdalena Ridge Observatory interferometer: a status update

M. Creech-Eakman, V. Romero, I. Payne, C. Haniff, D. Buscher, V. Alvidrez, C. Dahl, J. Deninger, A. Farris, S. Jimenez, C. Jurgenson, R. King, D. Klinglesmith, T. McCracken, A. Olivares, C. Salcido, Fernando Santoro, John Seamons, Robert Selina, Alisa Shtromberg, J Steenson, Nick Torres, Martin Fisher, E. Seneta, X. Sun, D. Wilson, John Young

Proc. SPIE. 8445, Optical and Infrared Interferometry III

KEYWORDS: Observatories, Telescopes, Mirrors, Interferometers, Computing systems, Space telescopes, Relays, Optical alignment, Prototyping, Magdalena Ridge Observatory

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Proceedings Article | 12 September 2012

The 2012 interferometric imaging beauty contest

Fabien Baron, William Cotton, Peter Lawson, Steve Ridgway, Alicia Aarnio, John Monnier, Karl-Heinz Hofmann, Dieter Schertl, Gerd Weigelt, Eric Thiébaut, Férréol Soulez, David Mary, Florentin Millour, Martin Vannier, John Young, Nicholas Elias, Henrique Schmitt, Sridharan Rengaswamy

Proc. SPIE. 8445, Optical and Infrared Interferometry III

KEYWORDS: Signal to noise ratio, Infrared imaging, Stars, Data modeling, Spatial frequencies, Image restoration, Interferometry, Reconstruction algorithms, Visibility, Aluminium phosphide

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Proceedings Article | 12 September 2012

The MROI's capabilities for imaging geosynchronous satellites

John Young, Christopher Haniff, David Buscher, Michelle Creech-Eakman, Ifan Payne, Colby Jurgenson, Van Romero

Proc. SPIE. 8445, Optical and Infrared Interferometry III

KEYWORDS: Signal to noise ratio, Telescopes, Interferometers, Satellites, Solar cells, Image restoration, Interferometry, Satellite imaging, Space telescopes, K band

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Proceedings Article | 12 September 2012

The MROI fast tip-tilt correction and target acquisition system

John Young, David Buscher, Martin Fisher, Christopher Haniff, Alexander Rea, Eugene Seneta, Xiaowei Sun, Donald Wilson, Allen Farris, Andres Olivares, Robert Selina

Proc. SPIE. 8445, Optical and Infrared Interferometry III

KEYWORDS: Human-machine interfaces, Mirrors, Imaging systems, Cameras, Sensors, Calibration, Control systems, Servomechanisms, Optical benches, Temperature metrology

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Proceedings Article | 12 September 2012

Final mechanical and opto-mechanical design of the Magdalena Ridge Observatory Interferometer

Fernando Santoro, Andres Olivares, Chris Salcido, Stephen Jimenez, Colby Jurgenson, Xiaowei Sun, Christopher Haniff, David Buscher, Michelle Creech-Eakman, Robert Selina, Tyler McCracken, John Young, Martin Fisher, Dan Klinglesmith, Nicolas Torres, Chuck Dahl, Alisa Shtromberg, Donald M. Wilson

Proc. SPIE. 8445, Optical and Infrared Interferometry III

KEYWORDS: Telescopes, Mirrors, Spectrographs, Prisms, Metrology, Sensors, Aluminum, Laser metrology, Prototyping, Magdalena Ridge Observatory

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Proceedings Article | 2 August 2010

The 2010 interferometric imaging beauty contest

Fabien Malbet, William Cotton, Gilles Duvert, Peter Lawson, Andrea Chiavassa, John Young, Fabien Baron, David Buscher, Sridharan Rengaswamy, Brian Kloppenborg, Martin Vannier, Laurent Mugnier

Proc. SPIE. 7734, Optical and Infrared Interferometry II

KEYWORDS: Stars, Data modeling, Interferometers, Image restoration, Image resolution, Interferometry, Software development, Spectral resolution, Reconstruction algorithms, Visibility

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Proceedings Article | 22 July 2010

Magdalena Ridge Observatory Interferometer automated alignment system

A. Shtromberg, C. Jurgenson, K. McCord, A. Olivares, H. Bloemhard, F. Santoro, D. Buscher, C. Haniff, J. Young, N. Torres, A. Farris

Proc. SPIE. 7734, Optical and Infrared Interferometry II

KEYWORDS: Telescopes, Mirrors, Beam splitters, Light emitting diodes, Interferometers, Sensors, Fourier transforms, Space telescopes, Optical alignment, Magdalena Ridge Observatory

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Proceedings Article | 22 July 2010

Magdalena Ridge Observatory Interferometer: advancing to first light and new science

M. Creech-Eakman, V. Romero, I. Payne, C. Haniff, D. Buscher, C. Aitken, C. Anderson, E. Bakker, T. Coleman, C. Dahl, A. Farris, S. Jiminez, C. Jurgenson, R. King, D. Klinglesmith, K. McCord, T. McCracken, K. Nyland, A. Olivares, M. Richmond, M. Romero, C. Salcido, J. Sandoval, F. Santoro, J. Seamons, R. Selina, A. Shtromberg, J. Steenson, N. Torres, D. Westpfahl, F. Baron, M. Fisher, E. Seneta, X. Sun, D. Wilson, J. Young

Proc. SPIE. 7734, Optical and Infrared Interferometry II

KEYWORDS: Observatories, Telescopes, Mirrors, Interferometers, Sensors, Wavefronts, Infrared radiation, Neodymium, Field emission displays, Magdalena Ridge Observatory

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Proceedings Article | 22 July 2010

Mechanical design of the Magdalena Ridge Observatory Interferometer

Fernando Santoro, Andres Olivares, Chris Salcido, Stephen Jimenez, Xiaowei Sun, Christopher Haniff, David Buscher, Michelle Creech-Eakman, Colby Jurgenson, Alisa Shtromberg, Eric Bakker, Rob Selina, Martin Fisher, John Young, Donald M. Wilson

Proc. SPIE. 7734, Optical and Infrared Interferometry II

KEYWORDS: Telescopes, Mirrors, Spectrographs, Beam splitters, Interferometers, Fourier transforms, Aluminum, Optical benches, Mechanical engineering, Simulation of CCA and DLA aggregates

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Proceedings Article | 22 July 2010

Imaging simulations of selected science with the Magdalena Ridge Observatory Interferometer

Michelle Creech-Eakman, John Young, Christopher Haniff, David Buscher, Martin Elvis, Andrea Chiavassa, Marc Schartmann

Proc. SPIE. 7734, Optical and Infrared Interferometry II

KEYWORDS: Telescopes, Stars, Data modeling, Interferometers, Image restoration, Interferometry, Clouds, Spatial resolution, Visibility, Magdalena Ridge Observatory

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Proceedings Article | 22 July 2010

Design of the MROI delay line optical path compensator

M. Fisher, R. Boysen, D. Buscher, C. Haniff, E. Seneta, X. Sun, D. M. Wilson, J. Young

Proc. SPIE. 7734, Optical and Infrared Interferometry II

KEYWORDS: Mirrors, Beam splitters, Eye, Electronics, Transformers, Metrology, Interferometers, Sensors, Control systems, Servomechanisms

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Proceedings Article | 22 July 2010

Fringe modulation for an MROI beam combiner

T. McCracken, C. Jurgenson, D. Baird, J. Seamons, K. McCord, D. Buscher, C. Haniff, J. Young

Proc. SPIE. 7734, Optical and Infrared Interferometry II

KEYWORDS: Mirrors, Detection and tracking algorithms, Modulation, Sensors, Amplifiers, Field programmable gate arrays, Control systems, Modulators, Atmospheric corrections, Optical tracking

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Proceedings Article | 22 July 2010

The MROI fringe tracker: first fringe experiment

C. Jurgenson, F. Santoro, T. McCracken, K. McCord, A. Shtromberg, D. Klinglesmith, A. Olivarez, D. Buscher, M. Creech-Eakman, C. Haniff, J. Young

Proc. SPIE. 7734, Optical and Infrared Interferometry II

KEYWORDS: Telescopes, Optical filters, Spectrographs, Modulation, Interferometers, Cameras, Sensors, Calibration, Temperature metrology, Visibility

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Proceedings Article | 19 July 2010

Software architecture of the Magdalena Ridge Observatory Interferometer

Allen Farris, Dan Klinglesmith, John Seamons, Nicolas Torres, David Buscher, John Young

Proc. SPIE. 7740, Software and Cyberinfrastructure for Astronomy

KEYWORDS: Telescopes, Interferometers, Databases, Computing systems, Diagnostics, Control systems, Telecommunications, Java, Distributed computing, Magdalena Ridge Observatory

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Proceedings Article | 28 July 2008

Image reconstruction at Cambridge University

Fabien Baron, John Young

Proc. SPIE. 7013, Optical and Infrared Interferometry

KEYWORDS: Signal to noise ratio, Telescopes, Stars, Data modeling, Interferometers, Image restoration, Interferometry, Image quality, Reconstruction algorithms, Visibility

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Proceedings Article | 28 July 2008

The long-stroke MROI vacuum delay lines: from concept to production

Christopher Haniff, Roger Boysen, David Buscher, Martin Fisher, Eugene Seneta, Xiaowei Sun, Donald M. A. Wilson, John Young, Fernando Santoro

Proc. SPIE. 7013, Optical and Infrared Interferometry

KEYWORDS: Telescopes, Mirrors, Metrology, Interferometers, Interferometry, Wavefronts, Telecommunications, Prototyping, Visibility, Magdalena Ridge Observatory

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Proceedings Article | 28 July 2008

MROI's automated alignment system

A. Shtromberg, C. Jurgenson, D. Buscher, C. Haniff, J. Young, F. Santoro, M. Paz, J. Steenson, L. Berger

Proc. SPIE. 7013, Optical and Infrared Interferometry

KEYWORDS: Telescopes, Mirrors, Beam splitters, Light sources, Interferometers, Sensors, Relays, Charge-coupled devices, Optical alignment, Prototyping

Read Abstract +

Proceedings Article | 28 July 2008

Fringe tracking at the MROI

C. Jurgenson, F. Santoro, F. Baron, K. McCord, E. Block, D. Buscher, C. Haniff, J. Young, T. Coleman, M. Creech-Eakman

Proc. SPIE. 7013, Optical and Infrared Interferometry

KEYWORDS: Telescopes, Mirrors, Spectrographs, Detection and tracking algorithms, Modulation, Sensors, Modulators, Optical alignment, Optical instrument design, Optical mounts

Read Abstract +

Proceedings Article | 28 July 2008

A high-sensitivity near-infrared science combiner for MROI

Fabien Baron, Erica Block, David Buscher, Julien Coyne, Michelle Creech-Eakman, Christopher Haniff, Colby Jurgenson, John Young

Proc. SPIE. 7013, Optical and Infrared Interferometry

KEYWORDS: Signal to noise ratio, Telescopes, Mirrors, Interferometers, Sensors, Calibration, Interferometry, Spectral resolution, K band, Visibility

Read Abstract +

Proceedings Article | 28 July 2008

Fringe tracking and spatial filtering: phase jumps and dropouts

David Buscher, John Young, Fabien Baron, Christopher Haniff

Proc. SPIE. 7013, Optical and Infrared Interferometry

KEYWORDS: Telescopes, Fringe analysis, Detection and tracking algorithms, Speckle, Spatial filters, Interferometers, Sensors, Wavefronts, Adaptive optics, Phase measurement

Read Abstract +

Proceedings Article | 28 July 2008

Recent developments in optical interferometry data standards

John Young, William Cotton, Wolfgang Gässler, Rafael Millan-Gabet, John Monnier, Thomas Pauls, Isabelle Percheron

Proc. SPIE. 7013, Optical and Infrared Interferometry

KEYWORDS: Optical filters, Data modeling, Interferometers, Calibration, Interfaces, Interferometry, Optical interferometry, Binary data, Standards development, Visibility

Read Abstract +

Proceedings Article | 28 July 2008

The Magdalena Ridge Observatory Interferometer: custom near-IR beamsplitter and AR coatings

E. Block, C. Jurgenson, D. Buscher, C. Haniff, J. Young, M. Creech-Eakman, A. Jaramillo, R. Schmell

Proc. SPIE. 7013, Optical and Infrared Interferometry

KEYWORDS: Telescopes, Antireflective coatings, Beam splitters, Polarization, Reflection, Interferometers, Optical coatings, Fourier transforms, Visibility, Magdalena Ridge Observatory

Read Abstract +

Proceedings Article | 28 July 2008

Magdalena Ridge Observatory Interferometer: progress toward first light

M. Creech-Eakman, V. Romero, D. Westpfahl, C. Cormier, C. Haniff, D. Buscher, E. Bakker, L. Berger, E. Block, T. Coleman, P. Festler, C. Jurgenson, R. King, D. Klinglesmith, K. McCord, A. Olivares, C. Parameswariah, I. Payne, T. Paz, E. Ryan, C. Salcido, F. Santoro, R. Selina, A. Shtromberg, J. Steenson, F. Baron, R. Boysen, J. Coyne, M. Fisher, E. Seneta, X. Sun, N. Thureau, D. Wilson, J. Young

Proc. SPIE. 7013, Optical and Infrared Interferometry

KEYWORDS: Observatories, Telescopes, Mirrors, Interferometers, Sensors, Interferometry, Buildings, Infrared telescopes, Optical instrument design, Magdalena Ridge Observatory

Read Abstract +

Proceedings Article | 28 July 2008

VSI: the VLTI spectro-imager

F. Malbet, D. Buscher, G. Weigelt, P. Garcia, M. Gai, D. Lorenzetti, J. Surdej, J. Hron, R. Neuhäuser, P. Kern, L. Jocou, J.-P. Berger, O. Absil, U. Beckmann, L. Corcione, G. Duvert, M. Filho, P. Labeye, E. Le Coarer, G. Li Causi, J. Lima, K. Perraut, E. Tatulli, E. Thiébaut, J. Young, G. Zins, A. Amorim, B. Aringer, T. Beckert, M. Benisty, X. Bonfils, A. Cabral, A. Chelli, O. Chesneau, A. Chiavassa, R. Corradi, M. De Becker, A. Delboulbé, G. Duchêne, T. Forveille, C. Haniff, E. Herwats, K.-H. Hofmann, J.-B. Le Bouquin, S. Ligori, D. Loreggia, A. Marconi, A. Moitinho, B. Nisini, P.-O. Petrucci, J. Rebordao, R. Speziali, L. Testi, F. Vitali

Proc. SPIE. 7013, Optical and Infrared Interferometry

KEYWORDS: Signal to noise ratio, Telescopes, Stars, Image restoration, Interferometry, Space telescopes, Spectral resolution, Integrated optics, Spatial resolution, Visibility

Read Abstract +

The VLTI Spectro Imager (VSI) was proposed as a second-generation instrument of the Very Large Telescope Interferometer providing the ESO community with spectrally-resolved, near-infrared images at angular resolutions down to 1.1 milliarcsecond and spectral resolutions up to R = 12000. Targets as faint as K = 13 will be imaged without requiring a brighter nearby reference object; fainter targets can be accessed if a suitable reference is available. The unique combination of high-dynamic-range imaging at high angular resolution and high spectral resolution enables a scientific program which serves a broad user community and at the same time provides the opportunity for breakthroughs in many areas of astrophysics. The high level specifications of the instrument are derived from a detailed science case based on the capability to obtain, for the first time, milliarcsecond-resolution images of a wide range of targets including: probing the initial conditions for planet formation in the AU-scale environments of young stars; imaging convective cells and other phenomena on the surfaces of stars; mapping the chemical and physical environments of evolved stars, stellar remnants, and stellar winds; and disentangling the central regions of active galactic nuclei and supermassive black holes. VSI will provide these new capabilities using technologies which have been extensively tested in the past and VSI requires little in terms of new infrastructure on the VLTI. At the same time, VSI will be able to make maximum use of new infrastructure as it becomes available; for example, by combining 4, 6 and eventually 8 telescopes, enabling rapid imaging through the measurement of up to 28 visibilities in every wavelength channel within a few minutes. The current studies are focused on a 4-telescope version with an upgrade to a 6-telescope one. The instrument contains its own fringe tracker and tip-tilt control in order to reduce the constraints on the VLTI infrastructure and maximize the scientific return.

Proceedings Article | 28 July 2008

Science case for 1 mas spectro-imagining in the near-infrared

Paulo Garcia, Jean-Philippe Berger, Alessandro Marconi, Alexander Krivov, Andrea Chiavassa, Bernard Aringer, Brunella Nisini, Denis Defrére, Dimitri Mawet, Dieter Schertl, Eric Tatuli, Eric Thiébaut, Fabien Baron, Fabien Malbet, Gaspard Duchéne, Gerd Weigelt, Gilles Duvert, Gilles Henri, Hubert Klahr, Jean Surdej, Jean-Charles Augereau, Jean-François Claeskens, John Young, Josef Hron, Karine Perraut, Karl-Heinz Hofmann, Leonardo Testi, Margarida Cunha, Mercedes Filho, Michaël De Becker, Olivier Absil, Olivier Chesneau, Pierre Collette, Pierre-Olivier Petrucci, Ralph Neuhaeuser, Romano Corradi, Sónia Antón, Sebastian Wolf, Sebastian Hoenig, Stephanie Renard, Thierry Forveille, Thomas Beckert, Thomas Lebzelter, Tim Harries, Virginie Borkowski, Xavier Bonfils

Proc. SPIE. 7013, Optical and Infrared Interferometry

KEYWORDS: Telescopes, Stars, Interferometry, Adaptive optics, Spectral resolution, High dynamic range imaging, Spatial resolution, Planets, Galactic astronomy, Visibility

Read Abstract +

We present the work developed within the science team of the Very Large Telescope Interferometer Spectro-Imager (VSI) during the Phase A studies. VSI aims at delivering ~ 1 milliarcsecond resolution data cubes in the near-infrared, with several spectral resolutions up to 12 000, by combining up to 8 VLTI telescopes. In the design of an instrument, the science case plays a central role by supporting the instrument construction decision, defining the top-level requirements and balancing design options. The overall science philosophy of VSI was that of a general user instrument serving a broad community. The science team addressed themes which included several areas of astrophysics and illustrated specific modes of operation of the instrument: a) YSO disks and winds; b) Multiplicity of young stars; c) Exoplanets; d) Debris disks; e) Stellar surface imaging; f) The environments of evolved stars; g) AGN tori; h) AGN's Broad Line Region; i) Supermassive black-holes; and j) Microlensing. The main conclusions can be summarized as follows: a) The accessible targets and related science are extremely sensitive to the instrument limiting magnitude; the instrument should be optimized for sensitivity and have its own fringe tracker. b) Most of the science cases are readily achievable with on-axis fringe tracking, off-axis fringe tracking enabling extra science. c) In most targets (YSOs, evolved stars and AGNs), the interpretation and analysis of circumstellar/nuclear dust morphology requires direct access to the gas via spectral resolved studies of emission lines, requiring at least a spectral resolution of 2 500. d) To routinely deliver images at the required sensitivity, the number of telescopes in determinant, with 6 telescopes being favored. e) The factorial increase in the number of closure phases and visibilities, gained in a single observation, makes massive surveys of parameters and related science for the first time possible. f) High dynamic range imaging and very high dynamic range differential closure phase are possible allowing the study of debris disks and characterization of pegasides. g) Spectro-imaging in the near-infrared is highly complementary to ALMA, adaptive optics and interferometric imaging in the thermal infrared.

Proceedings Article | 28 July 2008

System overview of the VLTI Spectro-Imager

L. Jocou, J. P. Berger, F. Malbet, P. Kern, U. Beckmann, D. Lorenzetti, L. Corcione, G. Li Causi, D. Buscher, J. Young, M. Gai, G. Weigelt, G. Zins, G. Duvert, K. Perraut, P. Labeye, O. Absil, P. Garcia, D. Loreggia, J. Lima, J. Rebordao, S. Ligori, A. Amorim, P. Rabou, J. B. Le Bouquin, C. Haniff, E. Le Coarer, P. Feautrier, G. Duchene, M. Benisty, A. Chelli, E. Herwats, A. Delboulbé

Proc. SPIE. 7013, Optical and Infrared Interferometry

KEYWORDS: Optical fibers, Mirrors, Spectrographs, Beam splitters, Sensors, Calibration, Fourier transforms, Interferometry, Computed tomography, Information operations

Read Abstract +

Proceedings Article | 28 July 2008

2008 imaging beauty contest

William Cotton, John Monnier, Fabien Baron, Karl-Heinz Hofmann, Stefan Kraus, Gerd Weigelt, Sridharan Rengaswamy, Eric Thiébaut, Peter Lawson, Walter Jaffe, Christian Hummel, Tom Pauls, Henrique Schmitt, Peter Tuthill, John Young

Proc. SPIE. 7013, Optical and Infrared Interferometry

KEYWORDS: Stars, Data modeling, Image restoration, Interferometry, Image quality, Reconstruction algorithms, Phase measurement, Astronomical imaging, K band, Visibility

Read Abstract +

Proceedings Article | 28 July 2008

Software and control for the Magdalena Ridge Observatory interferometer delay lines

John Young, Roger Boysen, David Buscher, Martin Fisher, Eugene Seneta

Proc. SPIE. 7013, Optical and Infrared Interferometry

KEYWORDS: Eye, Metrology, Interferometers, Sensors, Computing systems, Diagnostics, Control systems, Servomechanisms, Prototyping, Magdalena Ridge Observatory

Read Abstract +

Proceedings Article | 28 July 2008

Phase referencing in optical interferometry

Mercedes Filho, Paulo Garcia, Gilles Duvert, Gaspard Duchene, Eric Thiebaut, John Young, Olivier Absil, Jean-Phillipe Berger, Thomas Beckert, Sebastian Hoenig, Dieter Schertl, Gerd Weigelt, Leonardo Testi, Eric Tatuli, Virginie Borkowski, Michaël de Becker, Jean Surdej, Bernard Aringer, Joseph Hron, Thomas Lebzelter, Andrea Chiavassa, Romano Corradi, Tim Harries

Proc. SPIE. 7013, Optical and Infrared Interferometry

KEYWORDS: Signal to noise ratio, Telescopes, Stars, Radio optics, Image restoration, Fourier transforms, Image resolution, Interferometry, Optical interferometry, Visibility

Read Abstract +

Proceedings Article | 28 July 2008

Phase closure image reconstruction for future VLTI instrumentation

Mercedes Filho, Stephanie Renard, Paulo Garcia, Gilles Duvert, Eric Thiebaut, John Young, Olivier Absil, Jean-Phillipe Berger, Thomas Beckert, Sebastian Hoenig, Dieter Schertl, Gerd Weigelt, Leonardo Testi, Eric Tatuli, Virginie Borkowski, Michaël de Becker, Jean Surdej, Bernard Aringer, Joseph Hron, Thomas Lebzelter, Andrea Chiavassa, Romano Corradi, Tim Harries

Proc. SPIE. 7013, Optical and Infrared Interferometry

KEYWORDS: Telescopes, Stars, Data modeling, Interferometers, Image restoration, Fourier transforms, Interferometry, Optical interferometry, Astatine, Visibility

Read Abstract +

Proceedings Article | 28 July 2008

Fringe tracker for the VLTI spectro-imager

Leonardo Corcione, Donata Bonino, David Busher, Mario Gai, Sebastiano Ligori, Davide Loreggia, Giuseppe Massone, John Young

Proc. SPIE. 7013, Optical and Infrared Interferometry

KEYWORDS: Signal to noise ratio, Telescopes, Spectrographs, Beam splitters, Spatial filters, Sensors, Photons, Fourier transforms, Interferometry, Signal detection

Read Abstract +

Proceedings Article | 7 September 2006

The Magdalena Ridge Observatory Interferometer: a high-sensitivity imaging array

D. Buscher, E. Bakker, T. Coleman, M. Creech-Eakman, C. Haniff, C. Jurgenson, D. Klinglesmith, C. Parameswariah, J. Young

Proc. SPIE. 6307, Unconventional Imaging II

KEYWORDS: Telescopes, Reflection, Interferometers, Cameras, Interferometry, Wavefronts, Adaptive optics, Optical instrument design, Imaging arrays, Magdalena Ridge Observatory

Read Abstract +

Proceedings Article | 29 June 2006

Engineering overview of the conceptual design and hardware/software implementation proposed for the Magdalena Ridge Observatory Interferometer

Chethan Parameswariah, Eric Bakker, David Buscher, Tom Coleman, Michelle Creech-Eakman, Chris Haniff, Colby Jurgenson, Dan Klinglesmith, John Young

Proc. SPIE. 6268, Advances in Stellar Interferometry

KEYWORDS: Observatories, Telescopes, Metrology, Interferometers, Control systems, Relays, Optical instrument design, Computer architecture, Control systems design, Magdalena Ridge Observatory

Read Abstract +

Proceedings Article | 28 June 2006

2006 interferometry imaging beauty contest

Peter Lawson, William Cotton, Christian Hummel, Fabien Baron, John Young, Stefan Kraus, Karl-Heinz Hofmann, Gerd Weigelt, Michael Ireland, John Monnier, Eric Thiébaut, Sridharan Rengaswamy, Olivier Chesneau

Proc. SPIE. 6268, Advances in Stellar Interferometry

KEYWORDS: Observatories, Telescopes, Data modeling, Interferometers, Image restoration, Image resolution, Interferometry, Reconstruction algorithms, Algorithm development, Visibility

Read Abstract +

Proceedings Article | 28 June 2006

Magdalena Ridge Observatory Interferometer: status update

M. Creech-Eakman, E. Bakker, D. Buscher, T. Coleman, C. Haniff, C. Jurgenson, D. Klinglesmith, C. Parameswariah, V. Romero, A. Shtromberg, J. Young

Proc. SPIE. 6268, Advances in Stellar Interferometry

KEYWORDS: Observatories, Telescopes, Imaging systems, Interferometers, Cameras, Sensors, Infrared radiation, Optical instrument design, Simulation of CCA and DLA aggregates, Magdalena Ridge Observatory

Read Abstract +

Proceedings Article | 28 June 2006

Design and testing of an innovative delay line for the MROI

David Buscher, Roger Boysen, Roger Dace, Martin Fisher, Christopher Haniff, Eugene Seneta, Xiaowei Sun, Donald M. A. Wilson, John Young

Proc. SPIE. 6268, Advances in Stellar Interferometry

KEYWORDS: Mirrors, Metrology, Stars, Reflection, Interferometers, Sensors, Interferometry, Control systems, Servomechanisms, Prototyping

Read Abstract +

Proceedings Article | 28 June 2006

MROI's automated alignment system

C. Jurgenson, D. Buscher, M. Creech-Eakman, C. Haniff, J. Young, T. Coleman, C. Parameswariah, E. Seneta, E. Bakker

Proc. SPIE. 6268, Advances in Stellar Interferometry

KEYWORDS: Actuators, Telescopes, Mirrors, Interferometers, Cameras, Optical fabrication, Relays, Beam shaping, Optical alignment, Magdalena Ridge Observatory

Read Abstract +

Proceedings Article | 28 June 2006

Beam combiner studies for the Magdalena Ridge Observatory Interferometer

Fabien Baron, David Buscher, Julien Coyne, Michelle Creech-Eakman, Chris Haniff, Colby Jurgenson, John Young

Proc. SPIE. 6268, Advances in Stellar Interferometry

KEYWORDS: Staring arrays, Signal to noise ratio, Mirrors, Spectrographs, Interferometers, Sensors, Calibration, Glasses, Visibility, Magdalena Ridge Observatory

Read Abstract +

Proceedings Article | 23 June 2006

Activities in the COAST group: 2004-2006

Christopher Haniff, John Baldwin, Fabien Baron, Alastair Basden, Nazim Bharmal, Roger Boysen, David Buscher, Julien Coyne, Roger Dace, Martin Fisher, Craig Mackay, Richard Neill, Bridget O'Donovan, Eugene Seneta, Xiaowei Sun, Hrobjartur Thorsteinsson, Peter Warner, Donald Wilson, John Young

Proc. SPIE. 6268, Advances in Stellar Interferometry

KEYWORDS: Telescopes, Astronomy, Interferometers, Cameras, Image restoration, Interferometry, Synthetic apertures, Prototyping, Visibility, Magdalena Ridge Observatory

Read Abstract +

Proceedings Article | 20 October 2004

A data exchange standard for optical (visible/IR) interferometry

Thomas Pauls, John Young, William Cotton, John Monnier

Proc. SPIE. 5491, New Frontiers in Stellar Interferometry

KEYWORDS: Astronomy, Interferometers, Calibration, Data storage, Interferometry, Software development, Optical interferometry, Astronomical imaging, Binary data, Visibility

Read Abstract +

Proceedings Article | 20 October 2004

A new photon-counting spectrometer for the COAST

Alastair Basden, Christopher Haniff, Craig Mackay, Mick Bridgeland, Donald Wilson, John Young, David Buscher

Proc. SPIE. 5491, New Frontiers in Stellar Interferometry

KEYWORDS: Fringe analysis, Digital signal processing, Modulation, Interferometers, Sensors, Spectroscopy, Electron multiplying charge coupled devices, Charge-coupled devices, Frame grabbers, Visibility

Read Abstract +

Proceedings Article | 20 October 2004

The bispectrum in model-independent imaging

Hrobjartur Thorsteinsson, David Buscher, John Young

Proc. SPIE. 5491, New Frontiers in Stellar Interferometry

KEYWORDS: Mathematical modeling, Signal to noise ratio, Switches, Radio optics, Interferometers, Image restoration, Image quality, Synthetic apertures, Optical interferometry, Chemical elements

Read Abstract +

Proceedings Article | 20 October 2004

DIMMWIT measurements of the spatial and temporal scale of atmospheric turbulence at COAST and MROI

Bridget O'Donovan, Eugene Seneta, John Young, Daniel Klinglesmith

Proc. SPIE. 5491, New Frontiers in Stellar Interferometry

KEYWORDS: Telescopes, Stars, Imaging systems, Cameras, Computing systems, Image resolution, Wavefronts, Turbulence, Charge-coupled devices, Atmospheric turbulence

Read Abstract +

Proceedings Article | 20 October 2004

Astronomical site monitoring system for the Magdalena Ridge Observatory

Daniel Klinglesmith, R. Alvarado, Michelle Creech-Eakman, Bridget O'Donovan, Eugene Seneta, John Young

Proc. SPIE. 5491, New Frontiers in Stellar Interferometry

KEYWORDS: Telescopes, Astronomy, Imaging systems, Interferometers, Cameras, Clouds, Humidity, Environmental sensing, Temperature metrology, Magdalena Ridge Observatory

Read Abstract +

Proceedings Article | 20 October 2004

COAST: recent technology and developments

Christopher Haniff, John Baldwin, Alastair Basden, Nazim Bharmal, Roger Boysen, David Buscher, James Keen, Craig Mackay, Bridget O'Donovan, Eugene Seneta, Hrobjartur Thorsteinsson, Nathalie Thureau, Robert Tubbs, Peter Warner, Donald Wilson, John Young

Proc. SPIE. 5491, New Frontiers in Stellar Interferometry

KEYWORDS: Telescopes, Astronomy, Data modeling, Interferometers, Image restoration, Interferometry, Astronomical telescopes, Phase measurement, Astronomical imaging, Magdalena Ridge Observatory

Read Abstract +

Proceedings Article | 20 October 2004

An interferometry imaging beauty contest

Peter Lawson, William Cotton, Christian Hummel, John Monnier, Ming Zhao, John Young, Hrobjartur Thorsteinsson, Serge Meimon, Laurent Mugnier, Guy Le Besnerais, Eric Thiebaut, Peter Tuthill

Proc. SPIE. 5491, New Frontiers in Stellar Interferometry

KEYWORDS: Telescopes, Radio optics, Data modeling, Interferometers, Calibration, Image restoration, Interferometry, Synthetic apertures, Reconstruction algorithms, Visibility

Read Abstract +

Proceedings Article | 29 September 2004

A new infrared camera for COAST

Richard Neill, John Young

Proc. SPIE. 5499, Optical and Infrared Detectors for Astronomy

KEYWORDS: Infrared detectors, Infrared cameras, Telescopes, Imaging systems, Interferometers, Cameras, Sensors, Electrons, Synthetic apertures, Magdalena Ridge Observatory

Read Abstract +

Proceedings Article | 21 February 2003

DIMMWIT: comparing atmospheric seeing values measured by a differential image motion monitor, which is transportable, and COAST

Bridget O'Donovan, John Young, Peter Warner, David Buscher, Donald Wilson, Roger Boysen, E. Seneta, James Keen

Proc. SPIE. 4838, Interferometry for Optical Astronomy II

KEYWORDS: Telescopes, Interferometers, Cameras, Error analysis, Wavefronts, Turbulence, Charge-coupled devices, Motion measurement, Prototyping, Visibility

Read Abstract +

Proceedings Article | 21 February 2003

Progress at COAST 2000-2002

Christopher Haniff, John Baldwin, Alastair Basden, Nazim Bharmal, Roger Boysen, David Buscher, Amanda George, James Keen, Craig Mackay, Bridget O'Donovan, Debbie Pearson, John Rogers, Bodie Seneta, Hrobjarthur Thorsteinsson, Nathalie Thureau, Robert Tubbs, Peter Warner, Donald Wilson, John Young

Proc. SPIE. 4838, Interferometry for Optical Astronomy II

KEYWORDS: Telescopes, Astronomy, Stars, Interferometers, Sensors, Interferometry, Adaptive optics, Space telescopes, Phase measurement, Visibility

Read Abstract +

Proceedings Article | 21 February 2003

Fringe envelope tracking at COAST

Nathalie Thureau, Roger Boysen, David Buscher, Christopher Haniff, Ettore Pedretti, Peter Warner, John Young

Proc. SPIE. 4838, Interferometry for Optical Astronomy II

KEYWORDS: Telescopes, Fringe analysis, Avalanche photodetectors, Detection and tracking algorithms, Interferometers, Sensors, Optical tracking, Infrared radiation, Algorithm development, Infrared telescopes

Read Abstract +

Proceedings Article | 21 February 2003

Astrophysical results from COAST

John Young, John Baldwin, Alastair Basden, Nazim Bharmal, David Buscher, Amanda George, Christopher Haniff, James Keen, Bridget O'Donovan, Debbie Pearson, Hrobjarthur Thorsteinsson, Nathalie Thureau, Robert Tubbs, Peter Warner

Proc. SPIE. 4838, Interferometry for Optical Astronomy II

KEYWORDS: Avalanche photodetectors, Stars, Data modeling, Opacity, Calibration, Error analysis, Phase measurement, Electronic filtering, Visibility, Bandpass filters

Read Abstract +

Proceedings Article | 21 February 2003

Results from a pinhole spatial filtering system at COAST

James Keen, Peter Warner, David Buscher, Donald Wilson, John Young

Proc. SPIE. 4838, Interferometry for Optical Astronomy II

KEYWORDS: Signal to noise ratio, Telescopes, Optical filters, Astronomy, Spatial filters, Interferometers, Calibration, Wavefronts, Astronomical imaging, Visibility

Read Abstract +

Proceedings Article | 5 July 2000

Technologies for a cost-effective astronomical imaging array

David Buscher, John Rogers, John Baldwin, Roger Boysen, Amanda George, Christopher Haniff, Debbie Pearson, Peter Warner, Donald Wilson, John Young

Proc. SPIE. 4006, Interferometry in Optical Astronomy

KEYWORDS: Telescopes, Astronomy, Stars, Interferometers, Interferometry, Adaptive optics, Astronomical imaging, Imaging arrays, Optical arrays, Visibility

Read Abstract +

Proceedings Article | 5 July 2000

COAST: the current status

Christopher Haniff, John Baldwin, Roger Boysen, Amanda George, David Buscher, Craig Mackay, Debbie Pearson, John Rogers, Peter Warner, Donald Wilson, John Young

Proc. SPIE. 4006, Interferometry in Optical Astronomy

KEYWORDS: Telescopes, Antireflective coatings, Astronomy, Avalanche photodetectors, Sensors, Reflectivity, Interferometry, Infrared radiation, Astrophysics, Visibility

Read Abstract +

Proceedings Article | 5 July 2000

Performance of new fringe-detecting avalanche photodiodes at COAST

Amanda George, John Baldwin, Roger Boysen, Christopher Haniff, Craig Mackay, Debbie Pearson, John Rogers, Peter Warner, Donald Wilson, John Young

Proc. SPIE. 4006, Interferometry in Optical Astronomy

KEYWORDS: Signal to noise ratio, Telescopes, Photon counting, Avalanche photodetectors, Stars, Sensors, Interference (communication), Avalanche photodiodes, Astatine, Visibility

Read Abstract +

Proceedings Article | 5 July 2000

Recent astronomical results from COAST

John Young, John Baldwin, Roger Boysen, Amanda George, Christopher Haniff, Craig Mackay, Debbie Pearson, John Rogers, Peter Warner, Donald Wilson, Richard Wilson

Proc. SPIE. 4006, Interferometry in Optical Astronomy

KEYWORDS: Infrared imaging, Telescopes, Astronomy, Stars, Data modeling, Calibration, Distortion, Black bodies, Infrared radiation, Visibility

Read Abstract +

Proceedings Article | 24 July 1998

Spatial filtering using pinholes at COAST

David Saint-Jacques, John Baldwin, Roger Boysen, Christopher Haniff, Peter Lawson, John Rogers, Peter Warner, Donald Wilson, John Young

Proc. SPIE. 3350, Astronomical Interferometry

KEYWORDS: Signal to noise ratio, Telescopes, Modulation, Spatial filters, Sensors, Calibration, Wavefronts, Adaptive optics, Atmospheric optics, Visibility

Read Abstract +

Proceedings Article | 24 July 1998

Current status of COAST

John Baldwin, Roger Boysen, Christopher Haniff, Peter Lawson, Craig Mackay, John Rogers, David Saint-Jacques, Peter Warner, Donald Wilson, John Young

Proc. SPIE. 3350, Astronomical Interferometry

KEYWORDS: Telescopes, Mirrors, Stars, Interferometers, Wavefronts, Phase measurement, Imaging arrays, Optical arrays, Atmospheric optics, Visibility

Read Abstract +

Proceedings Article | 24 July 1998

Multiwavelength fringe measurement with a CCD spectrometer at COAST

Peter Lawson, John Baldwin, Peter Warner, Roger Boysen, Christopher Haniff, John Rogers, David Saint-Jacques, Donald Wilson, John Young, Craig Mackay

Proc. SPIE. 3350, Astronomical Interferometry

KEYWORDS: Telescopes, Avalanche photodetectors, Stars, Modulation, Spatial frequencies, Sensors, Spectroscopy, CCD cameras, Charge-coupled devices, Visibility

Read Abstract +

Proceedings Article | 24 July 1998

COAST in the near infrared: solutions for infrared interferometry

John Young, John Baldwin, Martin Beckett, Roger Boysen, Christopher Haniff, Peter Lawson, Craig Mackay, John Rogers, David Saint-Jacques, Peter Warner, Donald Wilson

Proc. SPIE. 3350, Astronomical Interferometry

KEYWORDS: Infrared detectors, Infrared sensors, Infrared imaging, Telescopes, Visible radiation, Sensors, Interferometry, Infrared radiation, Phase measurement, Visibility

Read Abstract +

Proceedings Article | 21 March 1997

Astronomical results from COAST

David Burns, John Baldwin, Peter Warner, Roger Boysen, Peter Lawson, Craig Mackay, John Rogers, Christopher Haniff, Donald Wilson, Tania Scott, John Young

Proc. SPIE. 2871, Optical Telescopes of Today and Tomorrow

KEYWORDS: Telescopes, Astronomy, Stars, Radio optics, Interferometers, Calibration, Synthetic apertures, Phase measurement, Astronomical imaging, Visibility

Read Abstract +

Proceedings Article | 21 March 1997

Developments at COAST

Peter Warner, John Baldwin, Roger Boysen, David Burns, Christopher Haniff, Peter Lawson, Craig Mackay, John Rogers, Tania Scott, Donald Wilson, John Young

Proc. SPIE. 2871, Optical Telescopes of Today and Tomorrow

KEYWORDS: Optical components, Telescopes, Astronomy, Avalanche photodetectors, Interferometers, Cameras, Sensors, Synthetic apertures, Astronomical telescopes, Visibility

Read Abstract +

Showing 5 of 86 publications

Conference Committee Involvement (1)

Advances in Stellar Interferometry

25 May 2006 | Orlando, Florida , United States

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