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1.2 Gigapixel camera subsystem


e2v's CryoCam, a unique 1.2 Gigapixel camera subsystem for the Javalambre Physics of the Accelerating Universe Astrophysical Survey
(J-PAS) project has successfully passed another critical milestone. The completed factory acceptance test was witnessed by representatives of the Brazilian-Spanish consortium, Centro de Estudios de Física del Cosmos de Aragón and Observatório Nacional, and enables the camera's delivery to the J-PAS consortium.

This unique camera subsystem will be integrated into the novel 2.5m wide field ground based telescope in Observatorio Astrofísico de Javalambre (OAJ), Aragon, Spain and will carry out a five year survey of the northern sky to build a high fidelity 3D map of the Universe and study dark energy. The camera has been expertly designed, assembled, integrated and tested by e2v. The exceptional flatness of the focal plane, combined with the e2v CryoCam's outstanding low noise and fast readout rates, has resulted in a highly efficient instrument that will supply J-PAS scientists with an immense amount of accurate astrophysical information.

Camera's key performance

  • Exceptional flatness and thermal and mechanical stability of the focal plane - 27μm peak to valley measured at -110 oC and room temperature, surpassing the customer's requirement
  • 14 9k x 9k pixel format CCD 290-99 scientific image sensors, backthinned, with anti-reflection coating for maximum sensitivity
  • Fast read-out time - under 20 seconds
  • Extremely low noise - less than 5 e- at 400KHz, surpassing the customer's requirement
  • Excellent cooling stability over long durations - better than +/- 1o C