Outputs (6)

Opto-mechanical designs for the HARMONI adaptive optics systems (2018)
Presentation / Conference Contribution
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

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... Read More about Opto-mechanical designs for the HARMONI adaptive optics systems.

Phase A AO system design and performance for MOSAIC at the ELT (2018)
Presentation / Conference Contribution
Morris, T., Basden, A., Calcines-Rosario, A., Dohlen, K., Dubbeldam, C., El Hadi, K., Fitzsimons, E., Fusco, T., Gendron, É., Hammer, F., Jagourel, P., Jenkins, D., Morel, C., Morris, S., Rousset, G., Townson, M., Vola, P., & Younger, E. (2018, June). Phase A AO system design and performance for MOSAIC at the ELT. Presented at Adaptive Optics Systems VI: SPIE Astronomical Telescopes + Instrumentation 2018, Austin, Texas

MOSAIC is a mixed-mode multiple object spectrograph planned for the ELT that uses a tiled focal plane to support a variety of observing modes. The MOSAIC AO system uses 4 LGS WFS and up to 4 NGS WFS positioned anywhere within the full 10 arcminute EL... Read More about Phase A AO system design and performance for MOSAIC at the ELT.

New opportunities of freeform gratings using diamond machining (2018)
Presentation / Conference Contribution
Bourgenot, C., Calcines, A., & Sharples, R. M. (2018, December). New opportunities of freeform gratings using diamond machining. Presented at Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III: SPIE Astronomical Telescopes + Instrumentation 2018, Austin, Texas

With the recent development of new ultra fine aluminium alloys and progress in the field of directly machined freeform surfaces, diamond machined freeform gratings could play an important part in future spectrographs or integral field units, particul... Read More about New opportunities of freeform gratings using diamond machining.

MOSAIC optical relay module: optical design, performance, and flexure analysis (2018)
Presentation / Conference Contribution
Calcines, A., Dubbeldam, M., Morris, T. J., Fitzsimons, E., Schnetler, H., Cohen, M., & Amans, J.-P. (2018, December). MOSAIC optical relay module: optical design, performance, and flexure analysis. Presented at Ground-based and Airborne Instrumentation for Astronomy VII, SPIE Astronomical Telescopes + Instrumentation 2018, Austin, Texas

The Optical Relay Module of the MOSAIC multiple-object spectrograph is used to relay 400-1800nm light picked off from the ELT focal plane to either a fibre-based integral field unit or a natural guide star wavefront sensor. Here we present the prelim... Read More about MOSAIC optical relay module: optical design, performance, and flexure analysis.

The reformatting advantage: photonics vs conventional optics! (2018)
Presentation / Conference Contribution
Calcines, A., Harris, R. J., Haynes, R., & Haynes, D. (2018, June). The reformatting advantage: photonics vs conventional optics!. Presented at Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III: SPIE Astronomical Telescopes + Instrumentation 2018, Austin, Texas

In recent decades, spectroscopic capabilities have been significantly enhanced by new technological developments, in particular spatial reformatting. Spatial reformatting allows multiple functionalities: the observation of a larger area of sky, obtai... Read More about The reformatting advantage: photonics vs conventional optics!.

Design of freeform diffraction gratings: performance, limitations and potential applications (2018)
Presentation / Conference Contribution
Calcines, A., Bourgenot, C., & Sharples, R. M. (2018, June). Design of freeform diffraction gratings: performance, limitations and potential applications. Presented at Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III: SPIE Astronomical Telescopes + Instrumentation 2018, Austin, Texas

Spectroscopy is a key technique in astronomy and nowadays most major telescopes include at least one spectrograph in their instrument suite. The dispersive element is one of the most important components and it defines the pupil size, spectral resolu... Read More about Design of freeform diffraction gratings: performance, limitations and potential applications.