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The ROSAT star tracker-flight experience

Purll, D. and Gradmann, N. and Bollner, M. (1991) The ROSAT star tracker-flight experience. In: Proceedings of the 1st International Conference on Spacecraft, Guidance Navigation and Control Systems, pp. 551-556. ESA Publications Division, Noordwijk, Netherlands.

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A high precision star tracker was developed for the attitude measurement and control system of the German X-ray astronomy satellite ROSAT, which was launched on 1 June 1990. This star tracker has a basic pointing angle of around 0.5 arc second per axis in a 5.9 deg x 4.4 deg field of view, whilst tracking stars down to 7th magnitude. It also has to operate with reduced accuracy in the sky survey phase of the mission, when stars scan across the field of viewin a given direction with a rate of up to 5 /minute. The performance exceeds specification as demonstrated by ground test and flight data reported in this paper. The star tracker is a solid-state instrument based on a CCD image sensor. It has been qualified since 1985, and is the highest accuracy solid-state tracker flown by western European industrie to date.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=1991,
Title:The ROSAT star tracker-flight experience
AuthorsInstitution or Email of Authors
Purll, D.SIRA Ltd.
Gradmann, N.MBB GmbH
Journal or Publication Title:Proceedings of the 1st International Conference on Spacecraft, Guidance Navigation and Control Systems
Page Range:pp. 551-556
Publisher:ESA Publications Division, Noordwijk, Netherlands
Series Name:ESA SP-323
Keywords:star tracker, high accuracy, CCD, flight results.
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:Space
DLR - Program:no assignment
DLR - Research theme (Project):UNSPECIFIED
Location: Oberpfaffenhofen
Institutes and Institutions:Space Operations and Astronaut Training > Hauptabteilung Raumflugmissionen
Deposited By: elib DLR-Beauftragter
Deposited On:02 Apr 2006
Last Modified:27 Apr 2009 05:18

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