Extreme Multiplex Spectrograph: An efficient mechanical design for high-demanding requirements

Details Extreme Multiplex Spectrograph: An efficient mechanical design for high-demanding requirements Extreme Multiplex Spectrograph: An efficient mechanical design for high-demanding requirements

2010-08-06

arxiv.org/abs/1008.1227v1

Astronomy and Astrophysics

Astrophysics

Instrumentation and Methods for Astrophysics

Scientific paper

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 100\mu). An overview of this extremely challenging mechanical design is here presented.

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