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Proceedings Paper

Precision pointing and image stabilization for the transition region and coronal explorer solar observatory
Author(s): Darrell F. Zimbelman; Joseph Burt; Marilyn E. Bruner; Theodore D. Tarbell; Chris G. Edwards; J. Roger Chen
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Paper Abstract

This paper presents a detailed description of the precision pointing system and the image stabilization system (ISS) for the Transition Region and Coronal Explorer (TRACE) satellite mission. The TRACE spacecraft is the fourth in NASA's small explorer series of missions and is scheduled for launch in September 1997. The primary TRACE science objective is to explore the relationship between the fine scale magnetic fields in the solar surface and features in the photosphere, chromosphere, transition region and corona. Quantitative images of these regions will be collected and used to study the structure and evolution of the sun's magnetic field with a spatial and temporal resolution of one arc-second and one second, respectively. TO meet the science objectives, the instrument payload and the spacecraft attitude control system are coupled using a guide telescope. The guide telescope provides both the targeting mechanism and pointing error signals for the spacecraft feedback control system. In addition, the guide telescope generates signals used to control the active mirror of the ISS. Simulation results show that precision target pointing is maintained to less than 5 arc-seconds, while analysis indicates that the ISS reduces image motion jitter below the 0.1 arc- second level.

Paper Details

Date Published: 7 June 1996
PDF: 12 pages
Proc. SPIE 2739, Acquisition, Tracking, and Pointing X, (7 June 1996); doi: 10.1117/12.241944
Show Author Affiliations
Darrell F. Zimbelman, NASA Goddard Space Flight Ctr. (United States)
Joseph Burt, NASA Goddard Space Flight Ctr. (United States)
Marilyn E. Bruner, Lockheed Martin Palo Alto Research Lab. (United States)
Theodore D. Tarbell, Lockheed Martin Palo Alto Research Lab. (United States)
Chris G. Edwards, Lockheed Martin Palo Alto Research Lab. (United States)
J. Roger Chen, K & D Research (United States)


Published in SPIE Proceedings Vol. 2739:
Acquisition, Tracking, and Pointing X
Michael K. Masten; Larry A. Stockum, Editor(s)

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