Opto-mechanical designs for the HARMONI adaptive optics systems

Dohlen, Kjetil; Morris, Timothy; Piqueras Lopez, Javier; Calcines-Rosario, Ariadna; Costille, Anne; Dubbeldam, Marc; El Hadi, Kacem; Fusco, Thierry; Llored, Marc; Neichel, Benoit; Pascal, Sandrine; Sauvage, Jean-Francois; Vola, Pascal; Clarke, Fraser; Schnetler, Hermine; Bryson, Ian; Thatte, Niranjan

Abstract

HARMONI is a visible and near-infrared integral field spectrograph equipped with two complementary adaptive optics systems, fully integrated within the instrument. A Single Conjugate AO (SCAO) system offers high performance for a limited sky coverage and a Laser Tomographic AO (LTAO) system provides AO correction with a very high sky-coverage. While the deformable mirror performing real-time correction of the atmospheric disturbances is located within the telescope itself, the instrument contains a suite of state-of-the-art and innovative wavefront sensor systems. Laser guide star sensors (LGSS) are located at the entrance of the instrument and fed by a dichroic beam splitter, while the various natural guide star sensors for LTAO and SCAO are located close to the science focal plane. We present opto-mechanical architecture and design at PDR level for these wavefront sensor systems.

Citation

Dohlen, K., Morris, T., Piqueras Lopez, J., Calcines-Rosario, A., Costille, A., Dubbeldam, M., El Hadi, K., Fusco, T., Llored, M., Neichel, B., Pascal, S., Sauvage, J.-F., Vola, P., Clarke, F., Schnetler, H., Bryson, I., & Thatte, N. (2018, December). Opto-mechanical designs for the HARMONI adaptive optics systems. Presented at Adaptive Optics Systems VI: SPIE Astronomical Telescopes + Instrumentation 2018, Austin, Texas

• Presentation Conference Type: Conference Paper (published)
• Conference Name: Adaptive Optics Systems VI: SPIE Astronomical Telescopes + Instrumentation 2018
• Online Publication Date: Jul 17, 2018
• Publication Date: 2018
• Deposit Date: Sep 25, 2018
• Publicly Available Date: Jan 17, 2023
• Publisher: SPIE
• Volume: 10703
• Book Title: Proceedings Volume 10703, Adaptive Optics Systems VI
• ISBN: 9781510619593
• DOI: https://doi.org/10.1117/12.2313651
• Public URL: https://durham-repository.worktribe.com/output/1143279