Cassiopée, towards technological development for XAO on ELT: the e-APD infrared detector

Jean-Luc Gach; Piero Bruno; Julien Charton; Philippe Feautrier; Thierry Fusco; Benoit Neichel; Jean-François Sauvage

doi:10.1117/12.3019626

27 August 2024 Cassiopée, towards technological development for XAO on ELT: the e-APD infrared detector

Jean-Luc Gach, Piero Bruno, Julien Charton, Philippe Feautrier, Thierry Fusco, Benoit Neichel, Jean-François Sauvage

Proceedings Volume 13103, X-Ray, Optical, and Infrared Detectors for Astronomy XI; 131030C (2024) https://doi.org/10.1117/12.3019626
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Abstract

The Cassiopée project aims to develop the key technologies that will be used to deploy very high-performance Adaptive Optics for future ELTs. The ultimate challenge is to detect earth-like planets and characterize the composition of their atmosphere. For this, imaging contrasts of the order of 109 are required, implying a leap forward in adaptive optics performance, with high density deformable mirrors (120x120 actuators), low-noise cameras and the control of the loop at few kHz. The project brings together 2 industrial partners: First Light Imaging and ALPAO, and 2 academic partners: ONERA and LAM, who will work together to develop a new camera for wavefront sensing, a new deformable mirror and their implementation in an adaptive optics loop. This paper will present the development of the fast large infrared e-APD camera which will be used in the wavefront sensor of the system. The camera will integrate the latest 512x512 Leonardo e-APD array and will benefit from the heritage of the first-light imaging's C-RED One camera. The most important challenges for the application are the autonomous operation, vibration control, background limitation, compactness, acquisition speed and latency.

Conference Presentation

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

Citation Download Citation

Jean-Luc Gach, Piero Bruno, Julien Charton, Philippe Feautrier, Thierry Fusco, Benoit Neichel, and Jean-François Sauvage "Cassiopée, towards technological development for XAO on ELT: the e-APD infrared detector", Proc. SPIE 13103, X-Ray, Optical, and Infrared Detectors for Astronomy XI, 131030C (27 August 2024); https://doi.org/10.1117/12.3019626

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