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Sökning: WFRF:(Brucalassi Anna) > (2022)

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1.
  • Brucalassi, Anna, et al. (författare)
  • A high resolution multi-object spectrograph for the VLT : a pre-concept design
  • 2022
  • Ingår i: Ground-based and Airborne Instrumentation for Astronomy IX. - : SPIE. - 0277-786X .- 1996-756X. - 9781510653498 ; 12184
  • Konferensbidrag (refereegranskat)abstract
    • Following the idea originally proposed during the ESO-Workshop The Very Large Telescope in 2030, the concept of a high resolution spectrograph for the VLT has been further explored, both for the science and technological aspects. Such an instrument will fill a gap in capabilities amongst the landscape of future instrumentation planned for the next decade. Its key characteristic will be high spectral resolution (R = 60000-80000) with multi-object (50-100) capabilities and, possibly, a stability that would provide high radial velocity precision (∼10m/s). In this work, we describe the science cases and driving science requirements for the instrument. Furthermore we will present some design solutions and technical options considered to meet these requirements.
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2.
  • Dorn, Reinhold J., et al. (författare)
  • CRIRES+ on sky : High spectral resolution at infrared wavelength enabling better science at the ESO VLT
  • 2022
  • Ingår i: Ground-Based And Airborne Instrumentation For Astronomy IX. - : SPIE - International Society for Optical Engineering. - 9781510653504 - 9781510653498
  • Konferensbidrag (refereegranskat)abstract
    • CRIRES+ extended the capabilities of CRIRES, the CRyogenic InfraRed Echelle Spectrograph. It transformed this VLT instrument into a cross-dispersed spectrograph to increase the wavelength range that is covered simultaneously by a factor of ten. In addition, a new detector focal plane array of three Hawaii 2RG detectors with a 5.3 mu m cut-off 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 beginning of 2020 and successfully commissioned and verified for science operations during 2021, partly remote from Europe due to the pandemic. The instrument was subsequently offered to the community from October 2021 onwards. This article describes the performance and capabilities of this development and presents on sky results.
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