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- W2078486876 abstract "The Large Synoptic Survey Telescope (LSST) is a large aperture, wide-field facility designed to provide deep images ofhalf the sky every few nights. There is only a single instrument on the telescope, a 9.6 square degree visible-bandcamera, which is mounted close to the secondary mirror, and points down toward the tertiary. The requirements of theLSST camera present substantial technical design challenges. To cover the entire 0.35 to 1 μm visible band, the cameraincorporates an array of 189 over-depleted bulk silicon CCDs with 10 μm pixels. The CCDs are assembled into 3 x 3rafts, which are then mounted to a silicon carbide grid to achieve a total focal plane flatness of 15 μm p-v. The CCDshave 16 amplifiers per chip, enabling the entire 3.2 Gigapixel image to be read out in 2 seconds. Unlike previousastronomical cameras, a vast majority of the focal plane electronics are housed in the cryostat, which uses a mixedrefrigerant Joule-Thompson system to maintain a -100oC sensor temperature. The shutter mechanism uses a 3 bladestack design and a hall-effect sensor to achieve high resolution and uniformity. There are 5 filters stored in a carouselaround the cryostat and the auto changer requires a dual guide system to control its position due to severe spaceconstraints. This paper presents an overview of the current state of the camera design and development plan." @default.
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- W2078486876 date "2010-07-16" @default.
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- W2078486876 title "Design and development of the 3.2 gigapixel camera for the Large Synoptic Survey Telescope" @default.
- W2078486876 doi "https://doi.org/10.1117/12.857920" @default.
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