MEGARA main optics opto-mechanics
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2014
Authors
Castillo Domínguez, E.
Avilés, J. L.
Carrasco, E.
Maldonado, M.
Gil de Paz, Armando
Cedazo, R.
Iglesias, J.
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SPIE, the international society for optics and photonics
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[5] Maldonado, M., “MEGARA spectrograph for the GTC: mechanical and opto-mechanical design”, Proceedings of the SPIE, Vol. 8446, article 844655, 15 pp. (2012)
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[11]Farah, A., et al, “Optomechanical design, manufacturing, assembly, and integration of contemporary camera barrels for astronomical instrumentation”, Optical Engineering, vol. 47, issue 7, p. 073401, (2008)
[12] Carrasco, E. et al, “Optical design for MEGARA: a multi-object spectrograph for the GTC”, Proceedings of the SPIE, Volume 8011, article id. 80112D, 10 pp. (2011)
[13] Sánchez, E., Gracía Vargas, M.L., Pérez Calpena, A., “MEGARA Detailed Design: Spectrograph Optics”, TEC/MEG/100 2.A MEGARA consortium internal technical report, 1-58 (2013)
Abstract
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.
Description
© 2014 SPIE.
Conference on Ground-Based and Airborne Instrumentation for Astronomy (5th. 2014. Montreal, Canada).