Active dynamic isolation and pointing control system design for ACCESS

Phillip Vallone; Jason Elias; Robert Egerman

doi:10.1117/12.858265

4 August 2010 Active dynamic isolation and pointing control system design for ACCESS

Phillip Vallone, Jason Elias, Robert Egerman

Proceedings Volume 7738, Modeling, Systems Engineering, and Project Management for Astronomy IV; 77381T (2010) https://doi.org/10.1117/12.858265
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

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.

Citation Download Citation

Phillip Vallone, Jason Elias, and Robert Egerman "Active dynamic isolation and pointing control system design for ACCESS", Proc. SPIE 7738, Modeling, Systems Engineering, and Project Management for Astronomy IV, 77381T (4 August 2010); https://doi.org/10.1117/12.858265

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