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20 July 2010 eXtreme multiplex spectrograph: a high-demanding mechanical design
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XMS is a multi-channel wide-field spectrograph designed for the prime focus of the 3.5m Calar-Alto telescope. The instrument is composed by four quadrants, each of which contains a spectrograph channel. An innovative mechanical design -at concept/preliminary stage- has been implemented to: 1) Minimize the separation between the channels to achieve maximal filling factor; 2) Cope with the very constraining space and mass overall requirements; 3) Achieve very tight alignment tolerances; 4) Provide lens self-centering under large temperature excursions; 5) Provide masks including 4000 slits (edges thinner than 100μ). An overview of this very challenging mechanical design is here presented.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
S. Becerril, K. Meisenheimer, C. M. Dubbeldam, R. Content, R. R. Rohloff, F. Prada, T. Shanks, and R. Sharples "eXtreme multiplex spectrograph: a high-demanding mechanical design", Proc. SPIE 7735, Ground-based and Airborne Instrumentation for Astronomy III, 773556 (20 July 2010);

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