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Proceedings Paper

Initial performance of the aspect system on the Chandra Observatory: postfacto aspect reconstruction
Author(s): Thomas L. Aldcroft; Margarita Karovska; Mark L. Cresitello-Dittmar; Robert A. Cameron; Maxim L. Markevitch
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Paper Abstract

The aspect system of the Chandra Observatory plays a key role in realizing the full potential of Chandra's X-ray optics and detectors. To achieve the highest spatial and spectral resolution (for grating observations), an accurate post-facto time history of the spacecraft attitude and internal alignment is needed. The CXC has developed a suite of tools which process sensor data from the aspect camera assembly and gyroscopes, and produce the spacecraft aspect solution. In this poster, the design of the aspect pipeline software is briefly described, followed by details of aspect system performance during the first eight months of flight. The two key metrics of aspect performance are: image reconstruction accuracy, which measures the X-ray image blurring introduced by aspect; and celestial location, which is the accuracy of detected source positions in absolute sky coordinates.

Paper Details

Date Published: 18 July 2000
PDF: 8 pages
Proc. SPIE 4012, X-Ray Optics, Instruments, and Missions III, (18 July 2000); doi: 10.1117/12.391604
Show Author Affiliations
Thomas L. Aldcroft, Smithsonian Astrophysical Observatory (United States)
Margarita Karovska, Smithsonian Astrophysical Observatory (United States)
Mark L. Cresitello-Dittmar, Smithsonian Astrophysical Observatory (United States)
Robert A. Cameron, Smithsonian Astrophysical Observatory (United States)
Maxim L. Markevitch, Smithsonian Astrophysical Observatory (United States)

Published in SPIE Proceedings Vol. 4012:
X-Ray Optics, Instruments, and Missions III
Joachim E. Truemper; Bernd Aschenbach, Editor(s)

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