Integration and testing of the DESI spectrograph prototype

S. Perruchot 1 A. Secroun 2 P.-E. Blanc 1 S. Ronayette 1 X. Régal 1 G. Castagnoli 1 A. Le Van Suu 1 A. Ealet 2 J.G. Cuby 3 K. Elliot A. Honscheid P. Jelinsky
1 OSU PYTHEAS - Institut Pythéas
2 CPPM - Centre de Physique des Particules de Marseille
3 LAM - Laboratoire d'Astrophysique de Marseille
Abstract : The Dark Energy Spectroscopic Instrument (DESI) is under construction to measure the expansion history of the Universe using the Baryon Acoustic Oscillation probe. The KPNO Mayall telescope will deliver light to 5000 fibers feeding ten broadband spectrographs. A consortium of Aix-Marseille University (AMU) and CNRS laboratories (LAM, OHP and CPPM) together with the WINLIGHT Systems company (Pertuis-France) has committed to integrate and validate the performance requirements of the full spectrographs, equipped with their cryostats, shutters and other mechanisms. An AIT plan has been defined and dedicated test equipment has been designed and implemented. This equipment simulates the fiber input illumination from the telescope, and offers a variety of continuum and line sources. Flux levels are adjustable and can illuminate one or several fibers along the test slit. It is fully remotely controlled and interfaced to the Instrument Control System. Specific analysis tools have also been developed to verify and monitor the performance and stability of the spectrographs. All these developments are described in details.
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Conference papers
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http://hal.in2p3.fr/in2p3-01419979
Contributor : Danielle Cristofol <>
Submitted on : Tuesday, December 20, 2016 - 11:27:30 AM
Last modification on : Monday, September 2, 2019 - 2:46:16 PM

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IN2P3 | CNRS | OSU-INSTITUT-PYTHEAS | CPPM | LAM | UNIV-AMU | INSU | IRSTEA

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S. Perruchot, A. Secroun, P.-E. Blanc, S. Ronayette, X. Régal, et al.. Integration and testing of the DESI spectrograph prototype. Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave, Jun 2016, Edinburgh, United Kingdom. ⟨10.1117/12.2231724⟩. ⟨in2p3-01419979⟩

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