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Publication . Preprint . Article . Conference object . 2014

Concept and optical design of the cross-disperser module for CRIRES+

Ernesto Oliva; Andrea Tozzi; D. Ferruzzi; Livia Origlia; A. P. Hatzes; Roman Follert; T. Loewinger; +27 Authors
Open Access
Published: 24 Jul 2014 Journal: SPIE Proceedings (issn: 0277-786X, Copyright policy )
Publisher: SPIE
CRIRES, the ESO high resolution infrared spectrometer, is a unique instrument which allows astronomers to access a parameter space which up to now was largely uncharted. In its current setup, it consists of a single-order spectrograph providing long-slit, single-order spectroscopy with resolving power up to R=100,000 over a quite narrow spectral range. This has resulted in sub-optimal efficiency and use of telescope time for all the scientific programs requiring broad spectral coverage of compact objects (e.g. chemical abundances of stars and intergalactic medium, search and characterization of extra-solar planets). To overcome these limitations, a consortium was set-up for upgrading CRIRES to a cross-dispersed spectrometer, called CRIRES+. This paper presents the updated optical design of the crossdispersion module for CRIRES+. This new module can be mounted in place of the current pre-disperser unit. The new system yields a factor of >10 increase in simultaneous spectral coverage and maintains a quite long slit (10"), ideal for observations of extended sources and for precise sky-background subtraction.
14 pages, 9 figures, 22 tables. Presented at SPIE Astronomical Telescope + Instrumentation 2014 (Ground-based and Airbone Instrumentation for Astronomy 5, 9147-289). To be published in Proceeding of SPIE Volume 9147
Subjects by Vocabulary

Microsoft Academic Graph classification: Physics Parameter space Spectrometer Disperser Telescope law.invention law Planet Stars Astronomy Spectroscopy Spectrograph

arXiv: Astrophysics::Earth and Planetary Astrophysics Astrophysics::Galaxy Astrophysics Astrophysics::Solar and Stellar Astrophysics Astrophysics::Instrumentation and Methods for Astrophysics


Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), FOS: Physical sciences

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