Mr. Sorabh Chhabra Profile

Sorabh Chhabra

Postdoctoral fellow at Univ of Exeter

SPIE Involvement:

Author

Publications (9)

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

Read Abstract +

SPIE Journal Paper | 6 June 2023 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

Read Abstract +

DOWNLOAD PAPER

Proceedings Article | 30 August 2022 Poster + Paper

Speckle simulation tool for automated modelling of a large range of telescope aperture to fried parameter ratios

Sorabh Chhabra, Abhay Kohok, Bhushan Joshi, A. Ramaprakash, Chaitanya Rajarshi, Rani Bhandare

Proceedings Volume 12185, 1218566 (2022) https://doi.org/10.1117/12.2628032

KEYWORDS: Turbulence, Telescopes, Speckle, Device simulation, Lenses, Zemax, Collimation, Cameras, Atmospheric turbulence, Monte Carlo methods

Read Abstract +

Proceedings Article | 26 August 2022 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

Read Abstract +

Proceedings Article | 26 August 2022 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

Read Abstract +

Proceedings Article | 26 August 2022 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

Read Abstract +

Proceedings Article | 26 August 2022 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

Read Abstract +

SPIE Journal Paper | 17 June 2021 Open Access

Generalized approach to compensate for low- and high-frequency errors in fast Fourier transform-based phase screen simulations

Sorabh Chhabra, Jyotirmay Paul, Anamparambu Ramaprakash, Avinash Surendran

JATIS, Vol. 7, Issue 02, 025007, (June 2021) https://doi.org/10.1117/12.10.1117/1.JATIS.7.2.025007

KEYWORDS: MATLAB, Fourier transforms, Telescopes, Matrices, Device simulation, Atmospheric turbulence, Atmospheric propagation, Astrophysics, Astronomy, Zernike polynomials

Read Abstract +

DOWNLOAD PAPER