4MOST: the high-resolution spectrograph
| Autor: | Allar Saviauk, Walter Seifert, W. Xu, Holger Mandel, A. Quirrenbach, C. Feiz, Peter Buschkamp, Samuel C. Barden |
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| Rok vydání: | 2016 |
| Předmět: |
media_common.quotation_subject
High resolution Field of view Astrophysics::Cosmology and Extragalactic Astrophysics 01 natural sciences law.invention 010309 optics Telescope Optics law 0103 physical sciences Mechanical design Astrophysics::Solar and Stellar Astrophysics Spectral resolution Spectroscopy 010303 astronomy & astrophysics Spectrograph Astrophysics::Galaxy Astrophysics media_common Remote sensing Physics business.industry Astrophysics::Instrumentation and Methods for Astrophysics Sky Astrophysics::Earth and Planetary Astrophysics business |
| Zdroj: | SPIE Proceedings. |
| ISSN: | 0277-786X |
| Popis: | 4MOST (4-meter Multi-Object Spectroscopic Telescope) is a wide-field, fiber-feed, high-multiplex spectroscopic survey facility to be installed on the 4-meter ESO telescope VISTA in Chile. It consists of two identical low resolution spectrographs and one high resolution spectrograph. The instrument is presently in the preliminary design phase and expected to get operational end of 2022. The high resolution spectrograph will afford simultaneous observations of up to 812 targets - over a hexagonal field of view of ~ 4.1 sq.degrees on sky - with a spectral resolution R>18,000 covering a wavelength range from 393 to 679nm in three channels. In this paper we present the optical and mechanical design of the high resolution spectrograph (HRS) as prepared for the review at ESO, Garching. The expected performance including the highly multiplexed fiber slit concept is simulated and its impact on the optical performance given. We show the thermal and finite element analyses and the resulting stability of the spectrograph under operational conditions. |
| Databáze: | OpenAIRE |
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