Stability of the OGSE Vis-NIR illumination sub-system for the future ARIEL space mission

Cédric Pereira; Manuel Abreu; D. Castro Alves; Alexandre Cabral; Robert Spry; Neil E. Bowles; Keith Nowicki; Maisie F. Rashman

doi:10.1117/12.3018284

23 August 2024 Stability of the OGSE Vis-NIR illumination sub-system for the future ARIEL space mission

Cédric Pereira, Manuel Abreu, D. Castro Alves, Alexandre Cabral, Robert Spry, Neil E. Bowles, Keith Nowicki, Maisie F. Rashman

Author Affiliations +

Proceedings Volume 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave; 130924W (2024) https://doi.org/10.1117/12.3018284
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

The future ARIEL Space Mission aims achieving a photometric precision down to the parts-per-million (ppm) level, over periods longer than ten hours. This required level of sensitivity is crucial to obtain valuable information about the properties of the exoplanet and its atmosphere. The Institute of Astrophysics and Space Sciences is responsible for the development of the visible and near-infrared (Vis-NIR) illumination sub-system, integrated in ARIEL’s Optical Ground Support Equipment (OGSE). This study presents an in-depth analysis of two main component of the Vis-NIR illumination sub-system: a Quartz Tungsten-Halogen (QTH) calibration light source and an extended Indium Gallium Arsenide (InGaAs) reference detector, tested under cryogenic conditions. It is shown that these two components are compliant with the ARIEL's requirements, allowing the mission to obtain spectroscopic and photometric time series with the stability needed to identify signal variations from 20 ppm to 100 ppm, over a 10-hour observation period.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Cédric Pereira, Manuel Abreu, D. Castro Alves, Alexandre Cabral, Robert Spry, Neil E. Bowles, Keith Nowicki, and Maisie F. Rashman "Stability of the OGSE Vis-NIR illumination sub-system for the future ARIEL space mission", Proc. SPIE 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave, 130924W (23 August 2024); https://doi.org/10.1117/12.3018284

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