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Proceedings Paper

Pointing and image stability for spaceborne sensors: from comet impactors to observations of extrasolar planets
Author(s): Stephen E. Kendrick; Jeremy Stober; Ian Gravseth
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Paper 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.

Paper Details

Date Published: 15 June 2006
PDF: 11 pages
Proc. SPIE 6265, Space Telescopes and Instrumentation I: Optical, Infrared, and Millimeter, 62652V (15 June 2006); doi: 10.1117/12.669068
Show Author Affiliations
Stephen E. Kendrick, Ball Aerospace & Technologies Corp. (United States)
Jeremy Stober, Ball Aerospace & Technologies Corp. (United States)
Ian Gravseth, Ball Aerospace & Technologies Corp. (United States)

Published in SPIE Proceedings Vol. 6265:
Space Telescopes and Instrumentation I: Optical, Infrared, and Millimeter
John C. Mather; Howard A. MacEwen; Mattheus W. M. de Graauw, Editor(s)

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