4 August 2016 Performance of the e2v 1.2 GPix cryogenic camera for the J-PAS 2.5m survey telescope
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Abstract
The J-PAS project will perform a five-year survey of the northern sky from a new 2.5m telescope in Teruel, Spain. In this paper the build and factory testing of the commercially supplied cryogenic camera is described. The 1.2 Giga-pixel focal plane is contained within a novel liquid-nitrogen cooled vacuum cryostat, which maintains the flatness for the cooled, 0.45m diameter focal plane to better than 27 μm peak to valley. The cooling system controls the focal plane to a temperature of -100°C with a variation across the focal plane of better than 2.5oC and a stability of better than +/- 0.5 °C over the long periods of operation required. The proximity drive electronics achieves total system level noise performance better than 5 e- from the 224-channel CCD system.
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M. S. Robbins, M. S. Robbins, M. Bastable, M. Bastable, A. Bates, A. Bates, M. Dryer, M. Dryer, S. Eames, S. Eames, G. Fenemore-Jones, G. Fenemore-Jones, G. Haddow, G. Haddow, P. R. Jorden, P. R. Jorden, B. Lane, B. Lane, A. Marin-Franch, A. Marin-Franch, J. Mortimer, J. Mortimer, I. Palmer, I. Palmer, N. Puttay, N. Puttay, R. Renshaw, R. Renshaw, M. Smith, M. Smith, K. Taylor, K. Taylor, J. Tearle, J. Tearle, P. Weston, P. Weston, P. Wheeler, P. Wheeler, J. Worley, J. Worley, } "Performance of the e2v 1.2 GPix cryogenic camera for the J-PAS 2.5m survey telescope", Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 990811 (4 August 2016); doi: 10.1117/12.2234626; https://doi.org/10.1117/12.2234626
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