Dr. Daniel J. Mortimer Profile

Dr. Daniel J. Mortimer

at Max-Planck Institute for Astronomy

SPIE Involvement:

Author

Publications (21)

Proceedings Article | 28 August 2024 Presentation + Paper

Presentation + Paper

Pushing high angular resolution and high contrast observations on the VLTI from Y to L band with the Asgard instrumental suite: integration status and plans

Marc-Antoine Martinod, Denis Defrère, Michael Ireland, Stefan Kraus, Frantz Martinache, Peter Tuthill, Fatmé Allouche, Emilie Bouzerand, Julia Bryant, Josh Carter, Sorabh Chhabra, Benjamin Courtney-Barrer, Fred Crous, Nick Cvetojevic, Colin Dandumont, Steve Ertel, Tyler Gardner, Germain Garreau, Adrian Glauser, Xavier Haubois, Lucas Labadie, Stéphane Lagarde, Daniel Lancaster, Romain Laugier, Alexandra Mazzoli, Anthony Meilland, Kwinten Missiaen, Sebastien Morel, Daniel Mortimer, Barnaby Norris, Jyotirmay Paul, Gert Raskin, Sylvie Robbe-Dubois, J. Gordon Robertson, Ahmed Sanny, Nicolas Schuhler, Owain Snaith, Adam Taras

Proceedings Volume 13095, 130950D (2024) https://doi.org/10.1117/12.3016296

KEYWORDS: Equipment, Spectrographs, Sensors, Lawrencium, L band, Calibration, Nulling interferometry, Astronomical interferometers, Spatial resolution, Control software

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Proceedings Article | 28 August 2024 Poster + Paper

Poster + Paper

The on- and off-axis light injection module for Asgard/BIFROST at VLTI

Daniel Mortimer, Sorabh Chhabra, Michael Ireland, Paul Jyotirmay, Stefan Kraus, Owain Snaith

Proceedings Volume 13095, 1309526 (2024) https://doi.org/10.1117/12.3019671

KEYWORDS: Tolerancing, Design, Optical path differences, Fiber couplers, Point spread functions, Beam diameter, Zemax, Dichroic mirrors

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Proceedings Article | 28 August 2024 Presentation + Paper

Presentation + Paper

Precision interferometry with MIRC-X/MYSTIC for exoplanets

John Monnier, Tyler Gardner, Linling Shuai, Emily Rauscher, Hayley Beltz, Isaac Malsky, Jean-Baptiste le Bouquin, Gail Schaefer, Stefan Kraus, Benjamin Setterholm, Narsireddy Anugu, Theo ten Brummelaar, Sorabh Chhabra, Isabelle Codron, Claire Davies, Jacob Ennis, Mayra Gutierrez, Noura Ibrahim, Aaron Labdon, Cyprien Lanthermann, Daniel Mortimer

Proceedings Volume 13095, 1309516 (2024) https://doi.org/10.1117/12.3020765

KEYWORDS: Exoplanets, Planets, Stars, Jupiter, Phase measurement, Binary stars, Interferometry, Data modeling, Visibility, Telescopes

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Proceedings Article | 28 August 2024 Poster + Paper

Poster + Paper

Spectrographs for the Asgard/BIFROST beam combiner for the VLTI: optical and optomechanical design and first lab results

Sorabh Chhabra, Stefan Kraus, Michele Frangiamore, Andrea Bianco, Andrea Vanella, Michael Ireland, Francisco Garzon, Manuela Arno, Daniel Lancaster, Daniel Mortimer, John Monnier, Jyotirmay Paul, Gordon Robertson, Owain Snaith

Proceedings Volume 13095, 130952D (2024) https://doi.org/10.1117/12.3018851

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Proceedings Article | 28 August 2024 Poster + Paper

Poster + Paper

Designing the data reduction pipeline for FOURIER: the first light near-IR science beam combiner at the Magdalena Ridge Observatory Interferometer

D. Frothingham, R. Norris, D. Buscher, M. Creech-Eakman, C. Haniff, A. Jorgensen, D. Mortimer, S. Rochelle, E. Seneta, J. Young

Proceedings Volume 13095, 130952X (2024) https://doi.org/10.1117/12.3021176

KEYWORDS: Data processing, Stars, Magdalena Ridge Observatory, Interferograms

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Proceedings Article | 28 August 2024 Poster + Paper

Poster + Paper

The Asgard/BIFROST pre-injection optics and fiber injection module: optomechanical design and lab results

Jyotirmay Paul, Daniel Mortimer, Sorabh Chhabra, Daniel Lancaster, Owain Snaith, Sidney Skellett, Arthur Kitching, Stefan Kraus, John Monnier, Michael Ireland

Proceedings Volume 13095, 1309521 (2024) https://doi.org/10.1117/12.3018779

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Proceedings Article | 28 August 2024 Presentation

Presentation

Status of Asgard/BIFROST: short-wavelength, high-spectral dispersion interferometry at VLTI

Stefan Kraus, Sorabh Chhabra, Jyotirmay Paul, Owain Snaith, Daniel Lancaster, Daniel Mortimer, Narsireddy Anugu, Michael Ireland, Frantz Martinache, Denis Defrère, Xavier Haubois, Nicolas Schuhler, Antoine Merand, Andrea Bianco, Michele Frangiamore, John Monnier, Marc-Antoine Martinod, Joshua Carter, Isabelle Codron, Yi Lu, Tyler Gardner

Proceedings Volume 13095, 130950E (2024) https://doi.org/10.1117/12.3019876

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Proceedings Article | 27 August 2024 Poster + Paper

Poster + Paper

Evolving the METIS soft real-time control system out of the simulation environment

Horst Steuer, Markus Feldt, Thomas Bertram, Carlos Correia, Andreas Obereder, Hugo Coppejans, Martin Kulas, Silvia Scheithauer, M. Concepción Cardenas Vazquez, Daniel Mortimer, Gilles Orban de Xivry, Olivier Absil

Proceedings Volume 13097, 130974L (2024) https://doi.org/10.1117/12.3018227

KEYWORDS: Matrices, Actuators, Wavefront sensors, Calibration, Wavefronts, Wavefront reconstruction, Sensors, Deformable mirrors, Adaptive optics, Telescopes

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Proceedings Article | 27 August 2024 Poster + Paper

Poster + Paper

Building an ELT simulator in the lab for subsystem testing of METIS/SCAO

Daniel Mortimer, M. Concepción Cárdenas Vázquez, Thomas Bertram, Peter Bizenberger, Maximilian Häberle, Armin Huber, Silvia Scheithauer

Proceedings Volume 13097, 1309753 (2024) https://doi.org/10.1117/12.3019954

KEYWORDS: Wavefront errors, Design, Stars, Mirrors, Light sources, Actuators, Mirror surfaces

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Proceedings Article | 27 August 2024 Presentation + Paper

Presentation + Paper

How to make METIS SCAO work

Thomas Bertram, Olivier Absil, Peter Bizenberger, Bernhard Brandl, Wolfgang Brandner, Florian Briegel, María Concepción Cárdenas Vázquez, Hugo Coppejans, Carlos Correia, Markus Feldt, Maximilian Häberle, Armin Huber, Martin Kulas, Werner Laun, Lars Mohr, Daniel Mortimer, Vianak Naranjo, Andreas Obereder, Gilles Orban de Xivry, Ralf-Rainer Rohloff, Silvia Scheithauer, Horst Steuer, Roy van Boekel

Proceedings Volume 13097, 1309727 (2024) https://doi.org/10.1117/12.3019877

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SPIE Journal Paper | 27 June 2023

High-angular resolution and high contrast observations from Y to L band at the Very Large Telescope Interferometer with the Asgard Instrumental suite

Marc-Antoine Martinod, Denis Defrère, Michael Ireland, Stefan Kraus, Frantz Martinache, Peter Tuthill, Azzurra Bigioli, Emilie Bouzerand, Julia Bryant, Sorabh Chhabra, Benjamin Courtney-Barrer, Fred Crous, Nick Cvetojevic, Colin Dandumont, Steve Ertel, Tyler Gardner, Germain Garreau, Adrian Glauser, Lucas Labadie, Tiphaine Lagadec, Romain Laugier, Alexandra Mazzoli, Daniel Mortimer, Barnaby R. Norris, Gert Raskin, Gordon Robertson, Ahmed Sanny, Adam Taras

JATIS, Vol. 9, Issue 02, 025007, (June 2023) https://doi.org/10.1117/12.10.1117/1.JATIS.9.2.025007

KEYWORDS: Equipment, Stars, L band, Exoplanets, Astronomical interferometers, Nulling interferometry, Imaging systems, Spatial resolution, Planets, Planetary systems

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SPIE Journal Paper | 6 June 2023 Open Access

Open Access

MYSTIC: a high angular resolution K-band imager at CHARA

Benjamin Setterholm, John Monnier, Jean-Baptiste Le Bouquin, Narsireddy Anugu, Jacob Ennis, Laurent Jocou, Nour Ibrahim, Stefan Kraus, Matthew Anderson, Sorabh Chhabra, Isabelle Codron, Christopher Farrington, Becky Flores, Tyler Gardner, Mayra Gutierrez, Cyprien Lanthermann, Olli W. Majoinen, Daniel Mortimer, Gail Schaefer, Nicholas Scott, Theo ten Brummelaar, Norman Vargas

JATIS, Vol. 9, Issue 02, 025006, (June 2023) https://doi.org/10.1117/12.10.1117/1.JATIS.9.2.025006

KEYWORDS: Equipment, K band, Spatial resolution, Beam combiners, Cameras, Imaging systems, Prisms, Mirrors, Vacuum, Design and modelling

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Proceedings Article | 26 August 2022 Presentation + Paper

Presentation + Paper

High-angular and high-contrast VLTI observations from Y to M band with the Asgard instrumental suite

Marc-Antoine Martinod, Denis Defrère, Michael Ireland, Stefan Kraus, Frantz Martinache, Peter Tuthill, Azzurra Bigioli, Julia Bryant, Sorabh Chhabra, Benjamin Courtney-Barrer, Fred Crous, Nick Cvetojevic, Colin Dandumont, Germain Garreau, Tiphaine Lagadec, Romain Laugier, Daniel Mortimer, Barnaby Norris, Gordon Robertson, Adam Taras

Proceedings Volume 12183, 1218310 (2022) https://doi.org/10.1117/12.2628151

KEYWORDS: Sensors, Mirrors, Cameras, Lawrencium, Camera shutters, L band, Interferometers, Calibration, Spectral resolution, Spatial resolution

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Proceedings Article | 26 August 2022 Presentation + Paper

Presentation + Paper

High spectral-resolution interferometry down to one micron with Asgard/BIFROST at VLTI: science drivers and project overview

Stefan Kraus, Daniel Mortimer, Sorabh Chhabra, Yi Lu, Isabelle Codron, Tyler Gardner, Narsireddy Anugu, John Monnier, Jean-Baptiste Le Bouquin, Michael Ireland, Frantz Martinache, Denis Defrère, Marc-Antoine Martinod

Proceedings Volume 12183, 121831S (2022) https://doi.org/10.1117/12.2627973

KEYWORDS: Stars, Spectral resolution, Interferometry, Exoplanets, Astronomical interferometry, Infrared detectors, Astronomical spectroscopy

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Proceedings Article | 26 August 2022 Presentation + Paper

Presentation + Paper

Spectrograph design for the Asgard/BIFROST spectro-interferometric instrument for the VLTI

Sorabh Chhabra, Michele Frangiamore, Stefan Kraus, Andrea Bianco, Francisco Garzon, John Monnier, Daniel Mortimer

Proceedings Volume 12183, 121830M (2022) https://doi.org/10.1117/12.2628805

KEYWORDS: Spectrographs, Binary data, Diffraction gratings, Calibration, Sensors, Prisms, Spectral resolution, Diffraction, Reflectivity

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Proceedings Article | 26 August 2022 Presentation + Paper

Presentation + Paper

Beam combiner for the Asgard/BIFROST instrument

Daniel Mortimer, Sorabh Chhabra, Stefan Kraus, Narsireddy Anugu, Romain Laugier, Jean-Baptiste Le Bouquin, John Monnier

Proceedings Volume 12183, 121831U (2022) https://doi.org/10.1117/12.2629268

KEYWORDS: Signal to noise ratio, Single mode fibers, Visibility, Photons, Spatial frequencies, Spectral resolution

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Proceedings Article | 26 August 2022 Poster + Paper

Poster + Paper

Cryogenic performance of FOURIER, the initial science combiner at the MROI

Daniel Mortimer, David Buscher, Michelle Creech-Eakman, Chris Haniff, Christopher Salcido, Eugene Seneta, Xiaowei Sun, John Young

Proceedings Volume 12183, 1218323 (2022) https://doi.org/10.1117/12.2629499

KEYWORDS: Sensors, Cryogenics, Spectral resolution, Light sources, K band, Zemax, Prisms, Photons, Visibility

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Proceedings Article | 13 December 2020 Presentation + Paper

Presentation + Paper

Setting the stage for first fringes with the Magdalena Ridge Observatory Interferometer

M. Creech-Eakman, V. Romero, C. Haniff, D. Buscher, J. Young, A. Olivares, E. Ligon, I. Payne, B. Avila, S. Blevins, N. Chowdhury, R. Collins, C. Dahl, D. Das Roy, J. Dooley, D. Etscorn, S. Etscorn, A. Farris, M. Fisher, E. Garcia, M. Gabaldon, C. Gino, R. Halder, O. Hosseini, B. Jaynes, L. Jencka, P. Johnston, S. Jojola, J. Luis, J. Maes, W. Martin, T. Matthews, C. McKeen, S. Mohammadi, D. Mortimer, S. Norouzi, D. Ochoa, B. Panta, J. Pino, I. Salayandia, C. Salcido, A. Sanchez, F. Santoro, E. B. Seneta, X. Sun, D. Wilson, J. Wolfram

Proceedings Volume 11446, 1144609 (2020) https://doi.org/10.1117/12.2563173

KEYWORDS: Interferometers, Magdalena Ridge Observatory, Telescopes, Infrared telescopes, Infrared imaging, Infrared radiation, Optical instrument design, Beam controllers, Control systems, Sensors

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Proceedings Article | 13 December 2020 Presentation + Paper

Presentation + Paper

First laboratory results from FOURIER, the initial science combiner at the MROI

Daniel Mortimer, David Buscher, Michelle Creech-Eakman, Chris Haniff, Edgar Ligon, James Luis, Christopher Salcido, Eugene Seneta, Xiaowei Sun, John Young

Proceedings Volume 11446, 114460V (2020) https://doi.org/10.1117/12.2561472

KEYWORDS: Free space optics, K band, Interferometry, Magdalena Ridge Observatory, Interferometers, Sensors, Free space, Spatial filters

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Proceedings Article | 9 July 2018 Presentation + Paper

Presentation + Paper

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

Proceedings Volume 10701, 1070106 (2018) https://doi.org/10.1117/12.2314155

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

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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 Paper

Paper

Prototyping FOURIER: the first generation near-infrared science beam combiner at the MROI

D. Mortimer, D. Buscher

Proceedings Volume 10701, 107010C (2018) https://doi.org/10.1117/12.2309932

KEYWORDS: K band, Sensors, Mirrors, Prisms, Interferometers, Visibility, Dispersion, Telescopes, Stars, Interferometry

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Showing 5 of 21 publications

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