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Proceedings Paper

Opto-mechanical design of SCUBA-2
Author(s): Eli Atad-Ettedgui; Tully Peacocke; David Montgomery; David Gostick; Helen McGregor; Mark Cliff; Ian J. Saunders; Leo Ploeg; Michiel Dorrepaal; Bart van Venrooij
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Paper 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.

Paper Details

Date Published: 6 July 2006
PDF: 18 pages
Proc. SPIE 6273, Optomechanical Technologies for Astronomy, 62732H (6 July 2006); doi: 10.1117/12.669231
Show Author Affiliations
Eli Atad-Ettedgui, UKATC, Royal Observatory Edinburgh (United Kingdom)
Tully Peacocke, UKATC, Royal Observatory Edinburgh (United Kingdom)
David Montgomery, UKATC, Royal Observatory Edinburgh (United Kingdom)
David Gostick, UKATC, Royal Observatory Edinburgh (United Kingdom)
Helen McGregor, UKATC, Royal Observatory Edinburgh (United Kingdom)
Mark Cliff, UKATC, Royal Observatory Edinburgh (United Kingdom)
Ian J. Saunders, TNO Science and Industry (Netherlands)
Leo Ploeg, TNO Science and Industry (Netherlands)
Michiel Dorrepaal, TNO Science and Industry (Netherlands)
Bart van Venrooij, TNO Science and Industry (Netherlands)

Published in SPIE Proceedings Vol. 6273:
Optomechanical Technologies for Astronomy
Eli Atad-Ettedgui; Joseph Antebi; Dietrich Lemke, Editor(s)

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