Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000spie.4139..175a&link_type=abstract
Proc. SPIE Vol. 4139, p. 175-185, Instrumentation for UV/EUV Astronomy and Solar Missions, Silvano Fineschi; Clarence M. Korendy
Astronomy and Astrophysics
Astronomy
Scientific paper
The FUSE satellite employs innovative techniques for autonomous target acquisitions and fine pointing control. One of two Fine Error Sensors, incorporated in the optical path of the science instrument, provide the Instrument Data System computer with images, for target identification, and field star centroids, for fine pointing information to the spacecraft attitude control system. A suite of 'toolbox' functions has been developed to locate stars, selected and track on 'unknown' guide stars from the image, identify the star field, track preselected 'known' guide stars, follow moving targets, and provide pointing optimizations to fine- tune the centering of a target. After a maneuver to a new field, initial attitude is determined by identifying stars found in a 20' X 20' image. Identification is done by matching stars with an uploaded table of up to 200 objects selected from the Hubble Space Telescope (HST) Guide Star Catalog (GSC), ranging from V equals 9 to 13.5 mag., and typically covering a one degree field around the target. During identification, tracking is performed on unidentified stars in the image to prevent the satellite from drifting. A corrective slew is then commanded to place the target at the desired position. Tracking is then resumed on preselected guide stars. If desired, further fine alignment of the science apertures is performed by a target peakup using the FUV detectors. We discuss the target acquisition process; end-to- end performance; and problems encountered due to the limitations of the small field of view of the FES, HST GSC errors, and stray light in the telescope baffles.
Ake Thomas B.
Fisher Landis H.
Kruk Jeffrey W.
Murphy Patricia K.
Oegerle William R.
No associations
LandOfFree
FUSE attitude control: target recognition and fine guidance performance does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with FUSE attitude control: target recognition and fine guidance performance, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and FUSE attitude control: target recognition and fine guidance performance will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1161105