We present a study on noise in space-based photometry originating from sensitivity variations within individual pixels, known as intra- pixel variations, and satellite attitude jitter. Karoff, Christoffer Arentoft, Torben Kjeldsen, Hans Noise Originating from Intra- pixel Structure and Satellite Attitude Jitter on COROT This perfect charge transfer makes CCD's radiation 'soft,' difficult to use under low light conditions, difficult to manufacture in large array sizes, difficult to integrate with on-chip electronics, difficult to use at low temperatures, difficult to use at high frame rates, and difficult to manufacture in non-silicon materials that extend wavelength response. The APS eliminates the need for nearly perfect charge transfer - the Achilles' heel of CCDs. An active pixel is defined as a detector array technology that has at least one active transistor within the pixel unit cell. In this paper, the Active Pixel Sensor (APS) technology is explored as a possible successor to the CCD. However, as with all technologies, we can be certain that they will be supplanted someday. In the 23 years since their invention in 1970, they have evolved to a sophisticated level of performance. Active Pixel Sensors: Are CCD's Dinosaurs?Ĭharge-coupled devices ( CCD's) are presently the technology of choice for most imaging applications.
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