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Proceedings Paper

Active dynamic isolation and pointing control system design for ACCESS
Author(s): Phillip Vallone; Jason Elias; Robert Egerman
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Paper Abstract

Current concepts for some future for space based astronomical observatories require extraordinary stability with respect to pointing and jitter disturbances. Exoplanet finding missions with internal coronagraphs require pointing stability of <10nrad 3σ (<2mas, 3σ). Closed-loop active dynamic isolation at the interface between a telescope and the spacecraft (where reaction wheels are the primary jitter source) can attain these requirements when incorporated with a robust overall pointing control system architecture which utilizes information from IRUs, star-trackers, and steering mirrors. ITT has developed a high TRL Active Isolation Mount System (AIMS) and through analyses and hardware test-bed work demonstrated that these stringent pointing and dynamic stability can be met for the Actively-Corrected Coronagraph for Exoplanet System Studies (ACCESS) [1] observatory.

Paper Details

Date Published: 4 August 2010
PDF: 9 pages
Proc. SPIE 7738, Modeling, Systems Engineering, and Project Management for Astronomy IV, 77381T (4 August 2010); doi: 10.1117/12.858265
Show Author Affiliations
Phillip Vallone, ITT Geospatial Systems (United States)
Jason Elias, ITT Geospatial Systems (United States)
Robert Egerman, ITT Geospatial Systems (United States)

Published in SPIE Proceedings Vol. 7738:
Modeling, Systems Engineering, and Project Management for Astronomy IV
George Z. Angeli; Philippe Dierickx, Editor(s)

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