Dynamical performance for science-mode stationkeeping with an external occulter

Dan Sirbu; Christian Vad Karsten; N. Jeremy Kasdin

doi:10.1117/12.856361

10 August 2010 Dynamical performance for science-mode stationkeeping with an external occulter

Dan Sirbu, Christian Vad Karsten, N. Jeremy Kasdin

Proceedings Volume 7731, Space Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter Wave; 773152 (2010) https://doi.org/10.1117/12.856361
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

An external occulter flown in precise formation with a telescope is being considered for high-contrast direct imaging of exoplanets as a viable mission scenario. In this paper, the dynamics about the Sun-Earth L2 region for an occulter-telescope constellation are considered in conjunction with fourth-body and solar radiation pressure acting as disturbing forces. An optimal observation window is defined in terms of both thrust required and the Sun-constellation geometry. By simulation, the effects of the stellar latitude and distance, the spacecraft separation, the magnitude of the disturbing forces, and on-off versus continuous thrusting are quantified on the thrusting profile needed to maintain precise alignment.

Citation Download Citation

Dan Sirbu, Christian Vad Karsten, and N. Jeremy Kasdin "Dynamical performance for science-mode stationkeeping with an external occulter", Proc. SPIE 7731, Space Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter Wave, 773152 (10 August 2010); https://doi.org/10.1117/12.856361

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