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Because Gaia will perform a continuous all-sky survey at a medium (Spectro) or very high (Astro) angular resolution , the on-board processing needs to cope with a high variety of objects and densities which calls for generic and adaptive algorithms at the detection level, but not only. Consequently, the Pyxis scientific algorithms developed for the on-board(More)
We present a high throughput prototype detection framework designed to meet the stringent scientific requirements of the Gaia mission and satisfy real-time and processing resource constraints on board the satellite. A mixed architecture, whose feasibility has been confirmed as part of phase A, is proposed which manages pixel level operations synchronously(More)
The capabilities of measuring the sky background both on-board of GAIA and on-ground are discussed in relation to astrometric and photometric scientific requirements, and to on-board computing specifications. From the various ways of estimating the sky background during the data reduction it is shown that AF11 would be the more adapted, either using its(More)
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