Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000spie.4139..163k&link_type=abstract
Proc. SPIE Vol. 4139, p. 163-174, Instrumentation for UV/EUV Astronomy and Solar Missions, Silvano Fineschi; Clarence M. Korendy
Astronomy and Astrophysics
Astronomy
Scientific paper
The Far Ultraviolet Spectroscopic Explorer mission imposes stringent requirements on the satellite attitude control system. Target acquisition accuracy and target tracking stability must each be no greater than 0.5 arcseconds FWHM. The data required by the attitude control system to meet these requirements are provided by two redundant Fine Error Sensors. Each Fine Error Sensor operates as a slit-jaw camera that provides either complete images of the star-field around the line of sight of the telescope, or centroided positions of selected guide stars in the field of view. The satellite pointing requirements must be met over a wide dynamic range of target or guide star brightness, for both sparse and crowded starfields, and for targets that may be either point sources or extended objects. We will describe the operational characteristics of the FES and present data on its performance. We also discuss the optical, mechanical, thermal, and electronic design challenges encountered in meeting the mission requirements, and how they were addressed in the context of a very tight development schedule.
Chayer Pierre
Hutchings John B.
Kruk Jeffrey W.
Morbey Christopher L.
Murowinski Richard G.
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