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Proceedings Paper

Performance of the Aspect Camera Assembly for the Advanced X-Ray Astrophysics Facility
Author(s): Dan L. Michaels
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Paper Abstract

The Aspect Camera Assembly (ACA) is a 'state-of-the-art' star tracker that provides real-time attitude information to the Advanced X-ray Astrophysics Facility (AXAF), and provides imaging data for 'post-facto' ground processing. The ACA consists of a telescope with a CCD focal plane, associated focal plane read-out electronics, and an on-board processor that processes the focal plane data to produce star image location reports. On-board star image locations are resolved to <EQ 0.8 arcsec, and post-facto algorithms yield <EQ arcsec star location accuracies. The protoflight ACA has been built, along with a high accuracy vacuum test facility. Image position determination has been verified to <EQ 0.2 arcsec accuracy. This paper is a follow-on paper to one presented by the author at the AeroSense '95 conference. This paper presents the 'as built' configuration, the tested performance, and the test facility's design and demonstrated accuracy. The ACA has been delivered in anticipation of a 1998 shuttle launch of AXAF.

Paper Details

Date Published: 30 July 1998
PDF: 10 pages
Proc. SPIE 3365, Acquisition, Tracking, and Pointing XII, (30 July 1998); doi: 10.1117/12.317515
Show Author Affiliations
Dan L. Michaels, Ball Aerospace Systems Div. (United States)

Published in SPIE Proceedings Vol. 3365:
Acquisition, Tracking, and Pointing XII
Michael K. Masten; Larry A. Stockum, Editor(s)

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