Final characteristics and performances of the fibres of MOONS

Isabelle Guinouard; Jean-Philippe Amans; David Horville; David Lee; Alexandre Cabral; Phil Rees; Stephen Watson; William Taylor; Hector Flores

doi:10.1117/12.2560635

13 December 2020 Final characteristics and performances of the fibres of MOONS

Isabelle Guinouard, Jean-Philippe Amans, David Horville, David Lee, Alexandre Cabral, Phil Rees, Stephen Watson, William Taylor, Hector Flores

Author Affiliations +

Proceedings Volume 11451, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV; 114516J (2020) https://doi.org/10.1117/12.2560635
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Conference Poster

Abstract

The Multi-Object Optical and near-Infrared Spectrograph (MOONS) will exploit the full 500 square arcmin field of view offered by the Nasmyth focus of the Very Large Telescope and will be equipped with two identical triple arm cryogenic spectrographs covering the wavelength range 0.64μm-1.8μm, with a multiplex capability of over 1000 fibres. Each spectrograph will produce spectra for 500 targets simultaneously, each with its own dedicated sky fibre for optimal sky subtraction. The system will have both a medium resolution (R~4000-6000) mode and a high resolution (R~20000) mode. The fibres are used to pick off each sub field of 1” and are used to transport the light from the instrument focal plane to the two spectrographs. Each fibre has a microlens to focus the beam into the fibre at a relative fast focal ratio of F/3.65 to reduce the Focal Ratio Degradation (FRD). This paper describes the final characteristics and performances of the MOONS fibre link, and their installation status into the slit of the spectrograph during the integration phase in Europe.

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Isabelle Guinouard, Jean-Philippe Amans, David Horville, David Lee, Alexandre Cabral, Phil Rees, Stephen Watson, William Taylor, and Hector Flores "Final characteristics and performances of the fibres of MOONS", Proc. SPIE 11451, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV, 114516J (13 December 2020); https://doi.org/10.1117/12.2560635

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