MEGARA main optics opto-mechanics



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Castillo Domínguez, E. and Avilés, J. L. and Carrasco, E. and Maldonado, M. and Gil de Paz, Armando and Gallego Maestro, Jesús and Cedazo, R. and Iglesias, J. (2014) MEGARA main optics opto-mechanics. Proceedings of SPIE, 9147 . 91475R_1- 91475R_14. ISSN 0277-786X

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MEGARA is the future integral-field and multi-object spectrograph for the GTC 10.4m telescope located in the Observatorio del Roque de los Muchachos in La Palma. INAOE is a member of the MEGARA Consortium and it is in charge of the Optics Manufacturing work package. In addition to the manufacturing of 73 elements, the work package includes the opto-mechanics i.e. the opto-mechanical design, manufacture, tests and integration of the complete assembly of the main optics composed by the collimator and camera subsystems. MEGARA passed the Optics Detailed Design Review in May 2013 and will have the Detailed Design Review of the complete instrument early 2014. Here we describe the detailed design of the collimator and camera barrels. We also present the finite elements models developed to simulate the behavior of the barrel, sub-cells and other mechanical elements. These models verify that the expected stress fields and the gravitational displacements on the lenses are compatible with the optical quality tolerances. The design is finished and ready for fabrication.

Item Type:Article
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© 2014 SPIE.
Conference on Ground-Based and Airborne Instrumentation for Astronomy (5th. 2014. Montreal, Canada).

Uncontrolled Keywords:Opto-mechanics; Large optics; Finite element analysis; Tolerance analysis
Subjects:Sciences > Physics > Astrophysics
Sciences > Physics > Astronomy
ID Code:32560
Deposited On:04 Aug 2015 08:51
Last Modified:10 Dec 2018 15:05

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