PixCellent Ltd.,Imaging System Selection Guide. Pix Cellent Whatever method you currently use for visualising your images, a cooled CCD imaging system from Pix Cellent will give you a much better picture. Other systems suffer from one or more of the problems which are all addressed by Pix Cellent 's cooled CCD imaging systems. This dark current is the internally generated signal that can swamp low light signals. It is reduced by a factor of 10 for every 20oC reduction in CCD operating temperature.
Low temperatures allow longer exposure times, up to many hours for some applications.
Pix Cellent 's cooled CCD imaging systems digitise the images with up to 65536 grey levels per pixel making them uniquely able to view extremely low contrast features even in the presence of very bright regions in the image. The cooling allows much lower signals to be detected without affecting the level of the strongest signal that can be handled. Pix Cellent 's cooled CCD imaging systems generate digital data directly without the need for a grabber board and the data are of very high linearity and precision. The measurements you make with an Pix Cellent system will be more accurate and quantitative compared with those from systems that grab from analogue signals. This leaflet acts as an overview and the following sections lead you through the principal choices that you need to make in selecting your system.