Translator Disclaimer
Paper
24 July 2014 Concept and optical design of the cross-disperser module for CRIRES+
Author Affiliations +
Abstract
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 cross-dispersion 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.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
PROCEEDINGS
14 PAGES


SHARE
Advertisement
Advertisement
RELATED CONTENT

Tolerancing a radial velocity spectrometer within Zemax
Proceedings of SPIE (August 19 2016)
LSST camera optics
Proceedings of SPIE (July 06 2006)
Lens design for the MOPITT orbiting spectrometer
Proceedings of SPIE (September 29 1995)

Back to Top