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ESO Spectroscopic Facility

Published online by Cambridge University Press:  02 August 2018

Luca Pasquini ,
B. Delabre ,
R. S. Ellis ,
J. Marrero ,
L. Cavaller  and
Tim de Zeeuw
Luca Pasquini
Affiliation:
ESO, Karl Schwarzschild Str. 2, Garching bei Muenchen, Germany email: lpasquin@eso.org
B. Delabre
Affiliation:
ESO, Karl Schwarzschild Str. 2, Garching bei Muenchen, Germany email: lpasquin@eso.org
R. S. Ellis
Affiliation:
ESO, Karl Schwarzschild Str. 2, Garching bei Muenchen, Germany email: lpasquin@eso.org
J. Marrero
Affiliation:
ESO, Karl Schwarzschild Str. 2, Garching bei Muenchen, Germany email: lpasquin@eso.org
L. Cavaller
Affiliation:
ESO, Karl Schwarzschild Str. 2, Garching bei Muenchen, Germany email: lpasquin@eso.org
Tim de Zeeuw
Affiliation:
ESO, Karl Schwarzschild Str. 2, Garching bei Muenchen, Germany email: lpasquin@eso.org Sterrenwacht Leiden, Leiden University, Postbus 9513, NL2300RA LeidenThe Netherlands
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Abstract

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We present the concept of a novel facility dedicated to massively-multiplexed spectroscopy. The telescope has a very wide field Cassegrain focus optimised for fibre feeding. With a Field of View (FoV) of 2.5 degrees diameter and a 11.4m pupil, it will be the largest etendue telescope. The large focal plane can easily host up to 16.000 fibres. In addition, a gravity invariant focus for the central 10 arc-minutes is available to host a giant integral field unit (IFU). The 3 lenses corrector includes an ADC, and has good performance in the 360-1300 nm wavelength range. The top level science requirements were developed by a dedicated ESO working group, and one of the primary cases is high resolution spectroscopy of GAIA stars and, in general, how our Galaxy formed and evolves. The facility will therefore be equipped with both, high and low resolution spectrographs. We stress the importance of developing the telescope and instrument designs simultaneously. The most relevant R&D aspect is also briefly discussed.

Keywords

Spectroscopic SurveysSurvey facilitiesCurved detectors
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 13 , Symposium S334: Rediscovering our Galaxy , July 2017 , pp. 242 - 247
Copyright
Copyright © International Astronomical Union 2018 

References

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