Physics
Scientific paper
Nov 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003nimpa.513..327h&link_type=abstract
Nuclear Instruments and Methods in Physics Research Section A, Volume 513, Issue 1-2, p. 327-331.
Physics
2
Active Pixel Sensors, Aps, Swift, Telescope Alignment Monitor, Star Trackers, Optical Intersatellite Links, Centroiding
Scientific paper
The X-ray Telescope for NASA's Swift mission incorporates a Telescope Alignment Monitor (TAM) to measure thermo-elastic misalignments between the telescope and the spacecraft star tracker. A LED in the X-ray focal plane is imaged on to a position-sensitive detector via two paths, directly and after reflection from the star tracker alignment cube. The separation of the two spots of light on the detector is determined with sub-pixel accuracy using a centroiding algorithm. The active element of the TAM is a miniature camera supplied by Sira Electro-Optics Ltd, using an Active Pixel Sensor (APS). The camera was based on similar pointing sensors developed on European Space Agency programmes, such as acquisition sensors for optical inter-satellite links and miniaturized star trackers. The paper gives the background to APS-based pointing sensors, describes the Swift TAM system, and presents test results from the instrument development programme.
Abbey Anthony F.
Hopkinson Gordon R.
Purll David J.
Short Alexander
Watson James D.
No associations
LandOfFree
Active pixel array devices in space missions 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 Active pixel array devices in space missions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Active pixel array devices in space missions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1767101