Dr. Jonah T. Hansen Profile

Dr. Jonah T. Hansen

Postdoctoral Researcher at ETH Zürich

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Publications (10)

SPIE Journal Paper | 22 April 2024

Space interferometer imaging limitations due to Global Positioning System uncertainties and parasitic forces in Low Earth Orbit

Leonid Pogorelyuk, Mason Black, Nicholas Belsten, Eleonora Polini, Jonah Hansen, Michael Ireland, John Monnier, Kerri Cahoy

JATIS, Vol. 10, Issue 02, 025004, (April 2024) https://doi.org/10.1117/12.10.1117/1.JATIS.10.2.025004

KEYWORDS: Image restoration, Visibility, Global Positioning System, Astronomical interferometers, Interferometers, Stars, Space operations, Phase retrieval, Error analysis, Reconstruction algorithms

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SPIE Journal Paper | 11 October 2023

Pyxis: a ground-based demonstrator for formation-flying optical interferometry

Jonah Hansen, Samuel Wade, Michael Ireland, Tony Travouillon, Tiphaine Lagadec, Nicholas Herrald, Joice Mathew, Stephanie Monty, Adam Rains

JATIS, Vol. 9, Issue 04, 045001, (October 2023) https://doi.org/10.1117/12.10.1117/1.JATIS.9.4.045001

KEYWORDS: Metrology, Stars, Cameras, Telescopes, Beam combiners, Control systems, Sensors, Optical interferometry, Robots, Astronomical interferometers

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Proceedings Article | 4 October 2023 Presentation + Paper

Space interferometer imaging limitations due to GPS uncertainties and parasitic forces in LEO

Leonid Pogorelyuk, Mason Black, Nicholas Belsten, Eleonora Polini, Jonah Hansen, Michael Ireland, John Monnier, Kerri Cahoy

Proceedings Volume 12676, 1267606 (2023) https://doi.org/10.1117/12.2677541

KEYWORDS: Visibility, Astronomical interferometers, Interferometers, Space operations, Stars, Reconstruction algorithms, Error analysis, Phase retrieval

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SPIE Journal Paper | 22 March 2023 Open Access

Dome seeing analysis of the Anglo-Australian Telescope

Josephine Munro, Jonah Hansen, Tony Travouillon, Doris Grosse, Andrei Tokovinin

JATIS, Vol. 9, Issue 01, 017004, (March 2023) https://doi.org/10.1117/12.10.1117/1.JATIS.9.1.017004

KEYWORDS: Domes, Telescopes, Wind speed, Turbulence, Convection, Mirrors, Vibration, Equipment, Meteorology, Relative humidity

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Proceedings Article | 26 August 2022 Presentation + Paper

The Pyxis Interferometer (II): control system, telescope, and mechanical design

Samuel Wade, Jonah Hansen, Michael Ireland, Tony Travouillon, Nicholas Bohlsen, Logan Corry, Steven Ellis, Nicholas Herrald, Weihao Luo, Stephen Madden, Joseph Mangos, Michael Polkinghorne, Kunlun Yan

Proceedings Volume 12183, 121831C (2022) https://doi.org/10.1117/12.2627772

KEYWORDS: Telescopes, Metrology, Control systems, Interferometers, Actuators, Stars, Sensors, Mirrors, Interferometry

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Proceedings Article | 26 August 2022 Presentation + Paper

The Pyxis Interferometer (I): scientific context, metrology system, and optical design

Jonah Hansen, Michael Ireland, Tony Travouillon, Samuel Wade, Michael Ellis, Steven Ellis, Shanae King, Tiphaine Lagadec, Joice Mathew, Patrick Miller, Stephanie Monty, Adam Rains, Thomas Scott, Hancheng Shao

Proceedings Volume 12183, 121831B (2022) https://doi.org/10.1117/12.2627768

KEYWORDS: Metrology, Interferometry, Interferometers, Telescopes, Spectrographs, Planets, Stars, Optical design

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Proceedings Article | 25 August 2022 Presentation + Paper

Results of the dome turbulence sensor at the Anglo-Australian Telescope

Josephine Munro, Jonah Hansen, Doris Grosse, Tony Travouillon, Andrei Tokovinin

Proceedings Volume 12186, 121860A (2022) https://doi.org/10.1117/12.2629702

KEYWORDS: Domes, Telescopes, Mirrors, Turbulence, Humidity, Convection, Meteorology, Sensors, Observatories, Environmental sensing

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SPIE Journal Paper | 12 May 2022

Interferometric beam combination with a triangular tricoupler photonic chip

Jonah Hansen, Michael Ireland, Andrew Ross-Adams, Simon Gross, Tiphaine Lagadec, Tony Travouillon, Joice Mathew

JATIS, Vol. 8, Issue 02, 025002, (May 2022) https://doi.org/10.1117/12.10.1117/1.JATIS.8.2.025002

KEYWORDS: Visibility, Interferometry, Waveguides, Interferometers, Polarization, Optical fibers, Beam splitters, Modulation, Phase shifts, Integrated optics

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Proceedings Article | 13 December 2020 Poster + Presentation + Paper

Linear formation-flying astronomical interferometry in low-Earth orbit: a feasibility study

Jonah Hansen, Michael Ireland, Tony Travouillon, Tiphaine Lagadec, Joice Mathew, Nicholas Herrald

Proceedings Volume 11443, 1144366 (2020) https://doi.org/10.1117/12.2560890

KEYWORDS: Astronomical interferometry, Interferometry, Spatial resolution, Astrophysics, Exoplanets, Earth's atmosphere, Optical instrument design, Telescopes, Space operations, Satellites

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Proceedings Article | 13 December 2020 Poster + Presentation + Paper

Compact unambiguous differential path-length metrology with dispersed Fabry-Perot laser diodes for a space interferometer array

T. Lagadec, M. Ireland, J. Hansen, J. Mathew, T. Travouillon, S. Madden

Proceedings Volume 11446, 114462F (2020) https://doi.org/10.1117/12.2561927

KEYWORDS: Metrology, Fabry–Perot interferometers, Interferometers, Semiconductor lasers, Space operations, Phase measurement, Spatial resolution, Exoplanets, Interferometry, Global Positioning System

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Showing 5 of 10 publications

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