| ![[ ESO ]](http://www.eso.org/images/eso-logo.gif)  | Wide Field Imager | ||||
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| The following measurements are made with the
ESO testbench. The operating temperature was - 95 °C. |  WFI attached to the ESO testbench. | 
|  Overall quantum efficiency | 
In the U-band the differences in the quantum efficiencies of the CCDs are not negligible.
|  Close up of the range 300 - 800 nm | 
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