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- W2099401404 abstract "From hitting a comet to long-term observations to find and characterize extrasolar planets, the spacecraft platform pointing accuracy and stability are fundamental. We describe the pointing requirements for Deep Impact, Kepler, and future extrasolar planet missions such as EPIC, and the approach to allow stable long-term measurements. The guidance, navigation, and control system consists of a suite of systems which can include star trackers, gyros, fine guidance sensors, reaction wheels, fast steering mirrors, and active and passive isolation features. One-fifth to one-twentieth of a pixel attitude determination may be needed with stabilities an order of magnitude tighter for observations that may last thousands of seconds. 1.5 milliarcsecond 3-sigma pointing stability can be achieved for the observatory enabling precision measurements by the scientific payloads." @default.
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- W2099401404 date "2006-06-14" @default.
- W2099401404 modified "2023-09-25" @default.
- W2099401404 title "Pointing and image stability for spaceborne sensors: from comet impactors to observations of extrasolar planets" @default.
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- W2099401404 doi "https://doi.org/10.1117/12.669068" @default.
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