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Proceedings Paper

End-to-end optomechanical simulation for high-precision global astrometry
Author(s): Daniele Gardiol; Davide Loreggia; Sergio Mannu; Sergio Mottini; Luca Perachino; Mario Gai; Mario G. Lattanzi
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Paper Abstract

We describe a software tool developed to simulate the behaviour of the angle between two lines of sight in a dual view telescope assembly (usually referred to as basic angle) due to optical misalignments induced by thermo-mechanical fluctuations. The tool applies to a variety of reflective optical designs. In principle, not only the basic angle behaviour can be simulated, but also other optical parameters. As a practical example, we present and discuss results obtained from application of our software to the case of the Gaia baseline optical design. We show that the final error can be severely degraded by fluctuations of the basic angle due to thermo-mechanical effects.

Paper Details

Date Published: 16 September 2004
PDF: 10 pages
Proc. SPIE 5497, Modeling and Systems Engineering for Astronomy, (16 September 2004); doi: 10.1117/12.550356
Show Author Affiliations
Daniele Gardiol, Osservatorio Astronomico di Torino (Italy)
Davide Loreggia, Osservatorio Astronomico di Torino (Italy)
Sergio Mannu, Alenia Spazio S.p.A. (Italy)
Sergio Mottini, Alenia Spazio S.p.A. (Italy)
Luca Perachino, Alenia Spazio S.p.A. (Italy)
Mario Gai, Osservatorio Astronomico di Torino (Italy)
Mario G. Lattanzi, Osservatorio Astronomico di Torino (Italy)


Published in SPIE Proceedings Vol. 5497:
Modeling and Systems Engineering for Astronomy
Simon C. Craig; Martin J. Cullum, Editor(s)

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