Opto-mechanical design of SCUBA-2

Eli Atad-Ettedgui; Tully Peacocke; David Montgomery; David Gostick; Helen McGregor; Mark Cliff; Ian J. Saunders; Leo Ploeg; Michiel Dorrepaal; Bart van Venrooij

doi:10.1117/12.669231

6 July 2006 Opto-mechanical design of SCUBA-2

Eli Atad-Ettedgui, Tully Peacocke, David Montgomery, David Gostick, Helen McGregor, Mark Cliff, Ian J. Saunders, Leo Ploeg, Michiel Dorrepaal, Bart van Venrooij

Author Affiliations +

Proceedings Volume 6273, Optomechanical Technologies for Astronomy; 62732H (2006) https://doi.org/10.1117/12.669231
Event: SPIE Astronomical Telescopes + Instrumentation, 2006, Orlando, Florida , United States

Abstract

This paper describes the opto-mechanical design of a large instrument for sub-mm, SCUBA-2, to be commissioned at JCMT. The scientific requirements, specially the large fov and the constraints of the telescope mechanical structure, lead to a complex optical design using freeform aluminium mirrors . The mechanical design is also challenging with large modules to be mounted and aligned in the telescope as well as the cryogenic instrument containing the mirrors, the filters, the dichroics and the detector modules. The cryogenic isostatic mounting, the structural and thermal designs are presented. This includes details of the fabrication of the structure and design of a shutter mechanism for operation at 4K. The results of the first AIV cool-down are also presented.

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Eli Atad-Ettedgui, Tully Peacocke, David Montgomery, David Gostick, Helen McGregor, Mark Cliff, Ian J. Saunders, Leo Ploeg, Michiel Dorrepaal, and Bart van Venrooij "Opto-mechanical design of SCUBA-2", Proc. SPIE 6273, Optomechanical Technologies for Astronomy, 62732H (6 July 2006); https://doi.org/10.1117/12.669231

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