Opto-mechanical designs for the HARMONI adaptive optics systems

Proceedings of SPIE SPIE 10703 (2018)

Authors:

K Dohlen, TJ Morris, J Piqueras Lopez, A Calcines-Rosario, A Costille, M Dubbeldam, K El Hadi, T Fusco, M Llored, B Neichel, S Pascal, J-F Sauvage, P Vola, Fraser Clarke, H Schnetler, I Bryson, Niranjan Thatte

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.

System analysis and expected performance of a high-contrast module for HARMONI

SPIE, the international society for optics and photonics 10702 (2018) 107029n

Authors:

Alexis Carlotti, François Hénault, Kjetil Dohlen, Jean-François Sauvage, Patrick Rabou, Yves Magnard, Arthur Vigan, David Mouillet, Gael Chauvin, Pascal Vola, Mickael Bonnefoy, Thierry Fusco, Kacem El Hadi, Niranjan Thatte, Fraser Clarke, Matthias Tecza, Ian Bryson, Hermine Schnetler, Christophe Vérinaud

ELT HARMONI: Image Slicer Preliminary Design

GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY VII 10702 (2018) UNSP 1070296

Authors:

Florence Laurent, Didier Boudon, Johan Kosmalski, Magali Loupias, Guillaume Raffault, Alban Remillieux, Niranjan Thatte, Ian Bryson, Hermine Schnetler, Fraser Clarke, Matthias Tecza

HARMONI pre-optics design at PDR

SPIE, the international society for optics and photonics 10702 (2018) 107029h

Authors:

MA Cagigas, E Hernandez, JL Rasilla, E Mediavilla, B García-Lorenzo, JM Herreros, JV Gigante, LF Rodriguez, I Bryson, M Schnedtler, F Clarke, M Tecza, N Thatte

MICHI: a thermal-infrared instrument for the TMT

SPIE, the international society for optics and photonics 10702 (2018) 10702a0

Authors:

Chris Packham, Mitsuhiko Honda, Mark Chun, Itsuki Sakon, Matthew Richter, Yoshiko Okamoto, Hirokazu Kataza, Christian Marois, Michael Meyer, Manoj Puravankara, Jayne Birkby, Ian Crossfield, Thayne Curry, Thomas Greathouse, Gregory Herczeg, Kohei Ichikawa, Hanae Inami, Masatoshi Imanishi, Enrique Lopez-Rodriguez