Upgrading CRIRES-VLT to cross-dispersed mode
2012 (English)In: Proceedings of SPIE: The International Society for Optical Engineering, 2012Conference paper (Refereed)
The cryogenic high resolution IR echelle spectrograph CRIRES is the ESO infrared (0.95-5.4 μm) high resolution spectrograph operating at the Nasmyth A focus of VLT-UT1. The instrument provides long-slit (31″) spectroscopy with resolving power up to R=100,000 over a quite narrow wavelengths range, about 1/70 of the central wavelength. Observations of compact objects (e.g. stellar photospheres) could be made much more efficient by implementing a cross-dispersed mode, which increases the simultaneous spectral coverage by an order of magnitude or more. This paper presents the design of a relatively simple system to add cross-dispersed modes to CRIRES with a minimum impact on the instrument optics and mechanics.
Place, publisher, year, edition, pages
, Proceedings of SPIE - The International Society for Optical Engineering, ISSN 0277-786X ; 8446
Ground based infrared instrumentation, Infrared spectrometers, Central wavelength, Compact objects, Echelle spectrograph, High resolution, Simple system, Spectral coverage, Stellar photospheres, Astronomy, Instruments
IdentifiersURN: urn:nbn:se:uu:diva-195451DOI: 10.1117/12.924969ISBN: 9780819491473OAI: oai:DiVA.org:uu-195451DiVA: diva2:608077
Ground-Based and Airborne Instrumentation for Astronomy IV, 1 July 2012 through 6 July 2012, Amsterdam