![]() ![]() ![]() And finally it maintains all this hardware in a clean, contaminant-free, high-vacuum environment. It also provides cooling (to minus 30 degrees Fahrenheit) for the sensors' readout electronics, which reside just behind the focal plane. The cryostat provides the optical bench - a silicon carbide grid - that keeps the large focal plane, which is 65 centimeters in diameter and composed of 189 CCD imaging sensors, flat to within just a tenth of the width of a human hair, while uniformly cooling it to minus 150 degrees Fahrenheit. ![]() It’s being assembled at the Department of Energy’s SLAC National Accelerator Laboratory. With 3.2 gigapixels, the LSST camera will be the largest digital camera ever built for ground-based astronomy. Work on the camera for the future Large Synoptic Survey Telescope (LSST) has reached a major milestone with the completion and delivery of the camera’s fully integrated cryostat. ![]()
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