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The final tests should be made with the modified control card for multi-window photometry using BIAS. The gain, read-out noise and linearity of the CCD should be tested using this card with the correct clamp and sample time (in fact, the multi-window photometry set-up already uses the correct clamp and sample time), after which this card can be installed permanently for use with either the normal set-up or for multi-window photometry.

Thomas Augusteijn 2004-05-18