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4 August 2010 MUSE instrument global performance analysis
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MUSE (Multi Unit Spectroscopic Explorer) is a second generation instrument developed for ESO (European Southern Observatory) and will be assembled to the VLT (Very Large Telescope) in 2012. The MUSE instrument can simultaneously record 90.000 spectra in the visible wavelength range (465-930nm), across a 1*1arcmin2 field of view, thanks to 24 identical Integral Field Units (IFU). A collaboration of 7 institutes has successfully passed the Final Design Review and is currently working on the first sub-assemblies. The sharing of performances has been based on 5 main functional sub-systems. The Fore Optics sub-system derotates and anamorphoses the VLT Nasmyth focal plane image, the Splitting and Relay Optics associated with the Main Structure are feeding each IFU with 1/24th of the field of view. Each IFU is composed of a 3D function insured by an image slicer system and a spectrograph, and a detection function by a 4k*4k CCD cooled down to 163°K. The 5th function is the calibration and data reduction of the instrument. This article depicts the breakdown of performances between these sub-systems (throughput, image quality...), and underlines the constraining parameters of the interfaces either internal or with the VLT. The validation of all these requirements is a critical task started a few months ago which requires a clear traceability and performances analysis.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
M. Loupias, R. Bacon, P. Caillier, A. Fleischmann, A. Jarno, A. Kelz, J. Kosmalski, F. Laurent, M. Le Floch, J. L. Lizon, A. Manescau, H. Nicklas, L. Parès, A. Pécontal, R. Reiss, A. Remillieux, E. Renault, M. M. Roth, G. Rupprecht, and R. Stuik "MUSE instrument global performance analysis", Proc. SPIE 7738, Modeling, Systems Engineering, and Project Management for Astronomy IV, 773804 (4 August 2010);


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