Dr. Ioannis Argyriou Profile

Dr. Ioannis Argyriou

Post-doctoral researcher at KU Leuven

SPIE Involvement:

Author

Publications (6)

Proceedings Article | 27 August 2022 Presentation + Paper

Row and column artifacts in JWST MIRI’s Si:As blocked impurity band detectors

Daniel Dicken, George Rieke, Michael Ressler, Jane Morrison, Macarena Garcia Marin, Iaonnis Argyriou, Karl Gordon, Mike Regan, Christophe Cossou, Andras Gaspar, Alistair Glasse, Pierre Guillard, Alvaro Labiano, Gillian Wright

Proceedings Volume 12180, 121802R (2022) https://doi.org/10.1117/12.2630027

KEYWORDS: James Webb Space Telescope, Imaging systems, Detector arrays

Read Abstract +

Proceedings Article | 27 August 2022 Poster + Paper

Ground calibration of the Ariel space telescope: optical ground support equipment design and description

Neil Bowles, Manuel Abreu, Tim van Kempen, Matthijs Krijger, Robert Spry, Rory Evans, Robert Watkins, Cédric Pereira, E. Pascale, Paul Eccleston, Chris Pearson, Lucile Desjonquères, Georgia Bishop, Andrew Caldwell, Andrea Moneti, Mauro Focardi, Subhajit Sarkar, Giuseppe Malaguti, Ioannis Argyriou, Keith Nowicki, Alexandre Cabral, Giovanna Tinetti

Proceedings Volume 12180, 1218049 (2022) https://doi.org/10.1117/12.2627049

KEYWORDS: Calibration, Sensors, Mirrors, Projection systems, Cryogenics, Telescopes, Beam expanders, Spectroscopy, Monochromators, Signal detection

Read Abstract +

This paper describes the Optical Ground Support Equipment (OGSE) that is being developed for the payload level testing of the Ariel Space Telescope. Ariel has been adopted as ESA’s “M4” mission in its Cosmic Visions Programme and will launch in 2029 to the second Earth-Sun Lagrange point. During four years of operation the Ariel payload (PL – the cryogenic payload module plus warm units) will perform precise transit spectroscopy of approximately 1000 known exoplanetary atmospheres using a 1.1 m × 0.7 m telescope coupled to two instruments: the Fine Guidance Sensor (FGS) and the Ariel Infrared Spectrometer (AIRS). These instruments provide three spectrometric channels that cover 1.0 to 7.8 μm wavelength range and three photometric channels between 0.5 and 1.1 μm. The Ariel OGSE will verify the optical and radiometric performance of the integrated Ariel PL under vacuum and cryogenic (<40 K) test conditions within the limitations of operation under Earth’s gravity and vibration environments. To achieve these verification requirements the OGSE is integrated with the main Ariel ground test 5 m thermal vacuum chamber. The test chamber contains a cryogenic enclosure (the Cryogenic Test Rig) that surrounds the PL and the OGSE itself comprises of four subsystems. (1) A cryogenic vacuum chamber and integrating sphere illumination module that is fed by visible, near infrared and thermal infrared sources. The illumination module is mounted external to the Ariel test chamber and coupled via a vacuum feedthrough that relays a 22 mm diameter test beam into the Cryogenic Test Rig. The test beam is then relayed using (2) an injection module that steers the beam to maintain alignment during cool-down and scan the Ariel telescope field of view. The beam is then expanded to partially illuminate the Ariel telescope primary mirror using an (3) ~0.3 m diameter target projector collimating mirror. The final optical component of the OGSE is a (4) beam expander placed on the Ariel common optical bench to compensate for the sub-aperture illumination of the primary and to ensure that the spectrometer modules provide illumination with correct cone angles during ground testing. It is planned to use the OGSE in 2026 for a full range of calibration and verification tests of the end-to-end telescope and instrument performance, including detectors, field of view and alignment. These tests will then ensure that Ariel meets it challenging photometric and spectral performance requirements.

Proceedings Article | 27 August 2022 Poster + Paper

Bayesian retrieval algorithm to detect unresolved point sources in JWST/MIRI spectra using the detector-produced interferometric fringes

Danny Gasman, Ioannis Argyriou, Bart Vandenbussche

Proceedings Volume 12180, 121803O (2022) https://doi.org/10.1117/12.2627845

KEYWORDS: Point spread functions, Data modeling, James Webb Space Telescope, Infrared telescopes, Fringe analysis, Detection and tracking algorithms, Astronomy

Read Abstract +

Proceedings Article | 15 December 2020 Presentation + Paper

Characterization of the optical properties of the buried contact of the JWST MIRI Si: as infrared blocked impurity band detectors

Ioannis Argyriou, George Rieke, Michael Ressler, András Gáspár, Bart Vandenbussche

Proceedings Volume 11454, 114541P (2020) https://doi.org/10.1117/12.2561502

KEYWORDS: Sensors, Modulation, Infrared cameras, Infrared radiation, Imaging spectroscopy, Quantum efficiency, Infrared imaging, Infrared spectroscopy, Absorption, Signal detection

Read Abstract +

Proceedings Article | 6 July 2018 Paper

Spectrum extraction from detector plane images for the medium-resolution spectrometer of the mid-Infrared Instrument on-board the James Webb Space Telescope

Ioannis Argyriou, Ruymán Azzollini, Bart Vandenbussche

Proceedings Volume 10698, 106983L (2018) https://doi.org/10.1117/12.2312697

KEYWORDS: Point spread functions, Image sensors, Detection and tracking algorithms, Calibration, James Webb Space Telescope, Signal detection, Spectroscopy, 3D image processing

Read Abstract +

Proceedings Article | 6 July 2018 Paper

Fringing solution for the mid-infrared instrument on-board the James Webb Space Telescope

Ioannis Argyriou, Bart Vandenbussche, Martyn Wells

Proceedings Volume 10698, 106983O (2018) https://doi.org/10.1117/12.2310268

KEYWORDS: Sensors, Fabry–Perot interferometers, Transmittance, Geometrical optics, Fringe analysis, Calibration, Silicon, Resonators, James Webb Space Telescope, Modulation, Mid-IR

Read Abstract +

Showing 5 of 6 publications

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

Keywords/Phrases

Search In:

Publication Years