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Proceedings Paper

Systems engineering for the preliminary design of the Thirty Meter Telescope
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Paper Abstract

A large ground-based astronomical telescope project, like the Thirty Meter Telescope (TMT), is rivaling space projects in technical complexity, design and construction time span, budget, as well as organizational diversity and geographical distribution. A unique challenge in large ground based projects is implementing appropriate systems engineering methods and tools in the absence of the strong institutional backdrop that space projects can rely on. This paper provides a critical overview of the established system engineering practice in the TMT project, including requirements engineering, document and configuration control, as well as performance allocation and estimation. In particular, we introduce a new performance metric, the Point Source Sensitivity (PSS), and show how it is superior to the 80% enclosed energy diameter measure. The overall strategy for estimating the performance of TMT is outlined, showing how the various elements of performance modeling, reported in detail in other papers, fit together to provide a probabilistic assessment of the achievable image quality of the observatory. An overview of the estimated system performance is presented with critical analysis of the major factors limiting the seeing limited observations.

Paper Details

Date Published: 7 July 2008
PDF: 11 pages
Proc. SPIE 7017, Modeling, Systems Engineering, and Project Management for Astronomy III, 701704 (7 July 2008); doi: 10.1117/12.787220
Show Author Affiliations
George Z. Angeli, Thirty Meter Telescope Observatory (United States)
Scott Roberts, Herzberg Institute of Astrophysics (Canada)
Konstantinos Vogiatzis, Thirty Meter Telescope Observatory (United States)

Published in SPIE Proceedings Vol. 7017:
Modeling, Systems Engineering, and Project Management for Astronomy III
George Z. Angeli; Martin J. Cullum, Editor(s)

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