1. CRIRES+ on sky at the ESO Very Large Telescope: Observing the Universe at infrared wavelengths and high spectral resolution.
- Author
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Dorn, R. J., Bristow, P., Smoker, J. V., Rodler, F., Lavail, A., Accardo, M., van den Ancker, M., Baade, D., Baruffolo, A., Courtney-Barrer, B., Blanco, L., Brucalassi, A., Cumani, C., Follert, R., Haimerl, A., Hatzes, A., Haug, M., Heiter, U., Hinterschuster, R., and Hubin, N.
- Subjects
VERY large telescopes ,FOCAL plane arrays sensors ,WAVELENGTHS ,ADAPTIVE optics ,COMMUNITIES - Abstract
The CRyogenic InfraRed Echelle Spectrograph (CRIRES) Upgrade project CRIRES
+ extended the capabilities of CRIRES. It transformed this VLT instrument into a cross-dispersed spectrograph to increase the wavelength range that is covered simultaneously by up to a factor of ten. In addition, a new detector focal plane array of three Hawaii 2RG detectors with a 5.3 μm cutoff wavelength replaced the existing detectors. Amongst many other improvements, a new spectropolarimetric unit was added and the calibration system has been enhanced. The instrument was installed at the VLT on Unit Telescope 3 at the beginning of 2020 and successfully commissioned and verified for science operations during 2021, partly remotely from Europe due to the COVID-19 pandemic. The instrument was subsequently offered to the community from October 2021 onwards. This article describes the performance and capabilities of the upgraded instrument and presents on sky results. [ABSTRACT FROM AUTHOR]- Published
- 2023
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